SELESwiki - User contributions [en]

Language Reference 1

2006-10-16T19:01:31Z

142.150.48.76:

==+==
DESCRIPTION:
The addition operator, "+"

USAGE:
x=Expr+Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the expression is the sum of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=1+2
=3
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==-==
DESCRIPTION:
The subtraction operator

USAGE:
x=Expr-Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression minus the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=15-2
=13
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==*==
DESCRIPTION:
The multiplication operator

USAGE:
x=Expr*Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value is the product of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=5*4
=20
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==/==
DESCRIPTION:
The division operator

USAGE:
x=Expr/Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression divided by value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=60/6
=10
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==^==
DESCRIPTION:
The power operator

USAGE:
x=Expr^Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
The first expression to the power of the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=7^3
=343
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==%==
DESCRIPTION:
The percentage operator

USAGE:
x=Expr % Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression modulo the value of the second expression(assumes that the values of the expression are integers

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=19 % 12
=7

Example 2:
x=10 % 20
=10

Example 3:
x=10 % 10
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

======
DESCRIPTION:
The EQ operator or the alternate form of EQ comparison (Note: two equal signs distinguish this from an assignment). This is a Boolean function operator.

USAGE:
x=Expr==Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the == sign must equal to value on the right of the == sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|==9 (TRUE)
=1

Example 2:
x=2*8==4*4 (TRUE)
=1

Example 3:
x=2*0==-1 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!===
DESCRIPTION:
The not equal operator or the alternate form of NOT EQUAL comparison. This is a Boolean function operator.

USAGE:
x=Expr!=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the != sign does not equal to value on the right of the != sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|!=-9 (TRUE)
=1

Example 2:
x=2*8!=4*3 (TRUE)
=1

Example 3:
x=2*8!=2*8 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<21 (TRUE)
=1
Example 2:
x=-17<-17 (FALSE)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<=21 (TRUE)
=1

Example 2:
x=-17<=|-17| (TRUE)
=1

Example 3:
x=-17<=-18 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>2 (TRUE)
=1

Example 2:
x=5>5 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>=2 (TRUE)
=1

Example 2:
x=5>=5 (TRUE)
=1

Example 3:
x=5>=6 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!==
DESCRIPTION:
A Boolean function operator that negates the expression Boolean value.

USAGE:
x=!Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Negates the expression Boolean value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
y = TRUE
x=IF !y
THEN 3 ELSE 4
=4

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ABS(Expr)==
DESCRIPTION:
The absolute value operator

USAGE:
x=ABS(Expr)=|Expr|=Absolute(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Absolute value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=ABS(-9)=|-9|=Absolute(-9)
=9
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==AND==
DESCRIPTION:
A boolean operator that returns TRUE if two expressions are both TRUE, and FALSE otherwise.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Composite Functions]]

==ARCCOS==(Expr) inverse cos of the value of the expression [[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

==ARCCOS==
DESCRIPTION:
The arccos function operator

USAGE:
x=ARCCOS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCCOS(0.5)
=59.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCSIN==
DESCRIPTION:
The arcsin function operator

USAGE:
x=ARCSIN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse sine of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCSIN(1)
=89.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr)==
DESCRIPTION:
The arctan function operator

USAGE:
x=ARCTAN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(1)
=44.9999999999999

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr,Expr)==
DESCRIPTION:
The arcsin quadrant function operator

USAGE:
x=ARCTAN(Expr,Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan where first expression is x offset and second is y offset. Provideing two expressions gives more infomation about the quadrant

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(5,9)
=60.9453959009227

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==BITWISE OR==
(Expr, Expr) Bitwise OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE AND==
(Expr, Expr) Bitwise AND of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE XOR==
(Expr, Expr) Bitwise exclusive-OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE NOT==
Expr Bitwise NOT of a value[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]

==CEILING(Expr)==
DESCRIPTION:
The ceiling operator

USAGE:
x=CEILING(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Smallest integer larger than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=CEILING(0.01)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CEILING==
(Expr) smallest integer larger than the expression value[[Model Builder's Guide Chapter 9#Ceiling]]

==CLAMP==
(Expr, MinExpr, MaxExpr) clamp the value X of the expression to the range
[Min, Max]: if X < Min then return Min; if X < Max return Max. Otherwise return X.
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

==CLASSIFY==
(X) if the value of the variable X is equal to one of
CLASS Number: Expr the classes listed, then return the result of the.
: associated expression. Otherwise return 0.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X) return the result of the kth expression in the list,
Expr where k = X – minimum value of the variables
: (this may be non-0 only for layers)
:
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): ( Number+) return the kth number in the list, where
k = X – minimum value of the variable (this
may be non-0 only for layers)[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename uses the table in the named file, which is
assumed to consist of class:value pairs. Rarely
used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename Key uses the table in the named file, which is
assumed to consist of class:value pairs. The key
is used to specify a sub-table in a multi-table
file. Rarely used.

Classified functions use the variable as an index into the list of numbers or expressions that follow. The “CLASS” keyword is optional. This variable must be non-negative. If “CLASS # :” is used, then the number refers to the value of the indexing variable. If a class is not specified for a given value, its expression is implicitly ZERO. Interpolation tables are very similar except that the variable is assumed to be continuous instead of classified. An interpolated value between classes is returned. Lookup tables are also similar, except that both the variable and classes are assumed to be continuous values. An interpolated value between classes is also returned. Rarely used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFIED_DIST==
draw a value from a discrete distribution, where CLASS Number: Expr each expression determines the relative : probability of its associated class being drawn. ENDFN The CLASS keyword is optional.

==CLASSIFIED_DIST==
( Number+) in this form, the classes are assumed to start at zero. Only constant probabilities can be given.
==CLASSIFIED_DIST==
in this form, the classes are assumed to start at Expr zero :
ENDFN

==CLASSIFIED_DIST[M]==
In this form, the classes in a one-dimensional
array M, and so start at zero.
==COS==
DESCRIPTION:
The cos function operator

USAGE:
x=COS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=COS(0.5)
=0.99996192306417

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CRITICAL SECTION==
(Flag) Enter (if Flag is TRUE) or exit (if Flag is FALSE) a critical section. A critical section gives priority to this application, and is used for
synchronizing access to shared variables
(i.e. shared with another application).[[Model Builder's Guide Chapter 9#Control Expressions]]

==DEBUG==
Update the simulation probe, if it is loaded and
The event is selected. Used to debug/verify
event behaviour.[[Model Builder's Guide Chapter 9#Control Expressions]]

==DECISION==
Expr approximation of line between end cells
Cost surface and least-cost path regions are advanced features that are best understood with an example model.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr known location indices. If there is a decision expression, then only those cells for which this
expression returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location indices stored in one-dimensional X.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location index. If there is a decision expression,
then only those cells for which this expression
returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr defines a region centred on the current cell.
If there is a decision expression, then only
those cells for which this expression returns
TRUE will be included.

DistanceType is either CARDINAL or EUCLIDEAN (the default). Cardinal distance between two cells is the minimum number of cardinal steps (up, down, left, right) to reach one cell from the other. Euclidean distance is the straight-line distance between two points. The WRAPPED flag, if present indicates that the region wraps around the sides (vertically and horizontally) of the landscape (e.g. a location x positions beyond the right-hand side of a raster will be mapped to x positions in from the left-hand side of the raster). If not present, the landscape does not wrap.
[[Model Builder's Guide Chapter 9#Region Functions]]
DESCRIPTION:
Defines a region centred on the current cell. If there is a decision expression, then only those cells for which this expression returns TRUE will be included.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==DIRECTION==
(Expr, Expr) angle in degrees between two location indices
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==DISPLAY== Display on the screen the labelled Label: Expr values computed with the expressions listed.
…. If no label is given, the expression must
ENDFN be a variable, and this is used for the label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
==DISPLAY== Same as above, but only display if the DECISION Expr decision expression evaluates to TRUE
Label: Expr The keyword DECISION can be replaced by
…. a “?”
ENDFN
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Output to the record file of output variable the labelled values computed with the Label: Expr expressions listed. If no label is given, the
…. Expression must be a variable and this is
ENDFN used as label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Same as above, but only output if the DECISION Expr decision expression evaluates to TRUE
Label: Expr
….
ENDFN

==DISTANCE==
(Expr, Expr) distance between two location indices (normally
obtained using the Location variable). Thus,
DISTANCE(loc1, loc2) is
sqrt(sqr(loc1.x – loc2.x) + sqr(loc1.y – loc2.y))
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==ELSE==
expression evaluates to TRUE and the set of
… sub-expressions after the ELSE otherwise. Note
ENDFN that “ELSE IF expr” forms can be strung
together[[Model Builder's Guide Chapter 9#Control Expressions]]

==EQUAL TRUE==
(1) if the sub-expressions all evaluate to
the same value and FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==EXP(Expr)==
DESCRIPTION:
(Expr) base of the natural logarithm (e) to the power of
the expression
USAGE:
x=EXP(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Base of the natural logarithm (e) to the power of the expression

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=EXP(3)
=20.08553692
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

==FLOOR(Expr)==
DESCRIPTION:
The flooring operator

USAGE:
x=FLOOR(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Largest integer smaller than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=FLOOR(0.99)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
==GEOMETRIC MEAN==
geometric mean of the sub-expressions (nth
root of the product for n expressions)

[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER OR EQUAL==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >=, and
FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER THAN==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >, and
FALSE (0) otherwise

[[Model Builder's Guide Chapter 9#Composite Functions]]

==LOG(Expr)==
DESCRIPTION:
The logarithm operator

USAGE:
x=LOG(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Natural logarithm of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=LOG(0.773)
=-0.111820506
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ROUND(Expr)==
DESCRIPTION:
The rounding operator

USAGE:
x=ROUND(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Expression value rounded to the nearest integer

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=ROUND(0.773)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

Language Reference 1

2006-10-16T19:01:16Z

142.150.48.76:

==+ ==
DESCRIPTION:
The addition operator, "+"

USAGE:
x=Expr+Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the expression is the sum of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=1+2
=3
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==-==
DESCRIPTION:
The subtraction operator

USAGE:
x=Expr-Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression minus the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=15-2
=13
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==*==
DESCRIPTION:
The multiplication operator

USAGE:
x=Expr*Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value is the product of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=5*4
=20
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==/==
DESCRIPTION:
The division operator

USAGE:
x=Expr/Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression divided by value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=60/6
=10
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==^==
DESCRIPTION:
The power operator

USAGE:
x=Expr^Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
The first expression to the power of the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=7^3
=343
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==%==
DESCRIPTION:
The percentage operator

USAGE:
x=Expr % Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression modulo the value of the second expression(assumes that the values of the expression are integers

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=19 % 12
=7

Example 2:
x=10 % 20
=10

Example 3:
x=10 % 10
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

======
DESCRIPTION:
The EQ operator or the alternate form of EQ comparison (Note: two equal signs distinguish this from an assignment). This is a Boolean function operator.

USAGE:
x=Expr==Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the == sign must equal to value on the right of the == sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|==9 (TRUE)
=1

Example 2:
x=2*8==4*4 (TRUE)
=1

Example 3:
x=2*0==-1 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!===
DESCRIPTION:
The not equal operator or the alternate form of NOT EQUAL comparison. This is a Boolean function operator.

USAGE:
x=Expr!=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the != sign does not equal to value on the right of the != sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|!=-9 (TRUE)
=1

Example 2:
x=2*8!=4*3 (TRUE)
=1

Example 3:
x=2*8!=2*8 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<21 (TRUE)
=1
Example 2:
x=-17<-17 (FALSE)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<=21 (TRUE)
=1

Example 2:
x=-17<=|-17| (TRUE)
=1

Example 3:
x=-17<=-18 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>2 (TRUE)
=1

Example 2:
x=5>5 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>=2 (TRUE)
=1

Example 2:
x=5>=5 (TRUE)
=1

Example 3:
x=5>=6 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!==
DESCRIPTION:
A Boolean function operator that negates the expression Boolean value.

USAGE:
x=!Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Negates the expression Boolean value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
y = TRUE
x=IF !y
THEN 3 ELSE 4
=4

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ABS(Expr)==
DESCRIPTION:
The absolute value operator

USAGE:
x=ABS(Expr)=|Expr|=Absolute(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Absolute value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=ABS(-9)=|-9|=Absolute(-9)
=9
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==AND==
DESCRIPTION:
A boolean operator that returns TRUE if two expressions are both TRUE, and FALSE otherwise.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Composite Functions]]

==ARCCOS==(Expr) inverse cos of the value of the expression [[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

==ARCCOS==
DESCRIPTION:
The arccos function operator

USAGE:
x=ARCCOS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCCOS(0.5)
=59.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCSIN==
DESCRIPTION:
The arcsin function operator

USAGE:
x=ARCSIN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse sine of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCSIN(1)
=89.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr)==
DESCRIPTION:
The arctan function operator

USAGE:
x=ARCTAN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(1)
=44.9999999999999

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr,Expr)==
DESCRIPTION:
The arcsin quadrant function operator

USAGE:
x=ARCTAN(Expr,Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan where first expression is x offset and second is y offset. Provideing two expressions gives more infomation about the quadrant

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(5,9)
=60.9453959009227

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==BITWISE OR==
(Expr, Expr) Bitwise OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE AND==
(Expr, Expr) Bitwise AND of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE XOR==
(Expr, Expr) Bitwise exclusive-OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE NOT==
Expr Bitwise NOT of a value[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]

==CEILING(Expr)==
DESCRIPTION:
The ceiling operator

USAGE:
x=CEILING(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Smallest integer larger than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=CEILING(0.01)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CEILING==
(Expr) smallest integer larger than the expression value[[Model Builder's Guide Chapter 9#Ceiling]]

==CLAMP==
(Expr, MinExpr, MaxExpr) clamp the value X of the expression to the range
[Min, Max]: if X < Min then return Min; if X < Max return Max. Otherwise return X.
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

==CLASSIFY==
(X) if the value of the variable X is equal to one of
CLASS Number: Expr the classes listed, then return the result of the.
: associated expression. Otherwise return 0.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X) return the result of the kth expression in the list,
Expr where k = X – minimum value of the variables
: (this may be non-0 only for layers)
:
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): ( Number+) return the kth number in the list, where
k = X – minimum value of the variable (this
may be non-0 only for layers)[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename uses the table in the named file, which is
assumed to consist of class:value pairs. Rarely
used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename Key uses the table in the named file, which is
assumed to consist of class:value pairs. The key
is used to specify a sub-table in a multi-table
file. Rarely used.

Classified functions use the variable as an index into the list of numbers or expressions that follow. The “CLASS” keyword is optional. This variable must be non-negative. If “CLASS # :” is used, then the number refers to the value of the indexing variable. If a class is not specified for a given value, its expression is implicitly ZERO. Interpolation tables are very similar except that the variable is assumed to be continuous instead of classified. An interpolated value between classes is returned. Lookup tables are also similar, except that both the variable and classes are assumed to be continuous values. An interpolated value between classes is also returned. Rarely used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFIED_DIST==
draw a value from a discrete distribution, where CLASS Number: Expr each expression determines the relative : probability of its associated class being drawn. ENDFN The CLASS keyword is optional.

==CLASSIFIED_DIST==
( Number+) in this form, the classes are assumed to start at zero. Only constant probabilities can be given.
==CLASSIFIED_DIST==
in this form, the classes are assumed to start at Expr zero :
ENDFN

==CLASSIFIED_DIST[M]==
In this form, the classes in a one-dimensional
array M, and so start at zero.
==COS==
DESCRIPTION:
The cos function operator

USAGE:
x=COS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=COS(0.5)
=0.99996192306417

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CRITICAL SECTION==
(Flag) Enter (if Flag is TRUE) or exit (if Flag is FALSE) a critical section. A critical section gives priority to this application, and is used for
synchronizing access to shared variables
(i.e. shared with another application).[[Model Builder's Guide Chapter 9#Control Expressions]]

==DEBUG==
Update the simulation probe, if it is loaded and
The event is selected. Used to debug/verify
event behaviour.[[Model Builder's Guide Chapter 9#Control Expressions]]

==DECISION==
Expr approximation of line between end cells
Cost surface and least-cost path regions are advanced features that are best understood with an example model.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr known location indices. If there is a decision expression, then only those cells for which this
expression returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location indices stored in one-dimensional X.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location index. If there is a decision expression,
then only those cells for which this expression
returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr defines a region centred on the current cell.
If there is a decision expression, then only
those cells for which this expression returns
TRUE will be included.

DistanceType is either CARDINAL or EUCLIDEAN (the default). Cardinal distance between two cells is the minimum number of cardinal steps (up, down, left, right) to reach one cell from the other. Euclidean distance is the straight-line distance between two points. The WRAPPED flag, if present indicates that the region wraps around the sides (vertically and horizontally) of the landscape (e.g. a location x positions beyond the right-hand side of a raster will be mapped to x positions in from the left-hand side of the raster). If not present, the landscape does not wrap.
[[Model Builder's Guide Chapter 9#Region Functions]]
DESCRIPTION:
Defines a region centred on the current cell. If there is a decision expression, then only those cells for which this expression returns TRUE will be included.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==DIRECTION==
(Expr, Expr) angle in degrees between two location indices
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==DISPLAY== Display on the screen the labelled Label: Expr values computed with the expressions listed.
…. If no label is given, the expression must
ENDFN be a variable, and this is used for the label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
==DISPLAY== Same as above, but only display if the DECISION Expr decision expression evaluates to TRUE
Label: Expr The keyword DECISION can be replaced by
…. a “?”
ENDFN
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Output to the record file of output variable the labelled values computed with the Label: Expr expressions listed. If no label is given, the
…. Expression must be a variable and this is
ENDFN used as label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Same as above, but only output if the DECISION Expr decision expression evaluates to TRUE
Label: Expr
….
ENDFN

==DISTANCE==
(Expr, Expr) distance between two location indices (normally
obtained using the Location variable). Thus,
DISTANCE(loc1, loc2) is
sqrt(sqr(loc1.x – loc2.x) + sqr(loc1.y – loc2.y))
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==ELSE==
expression evaluates to TRUE and the set of
… sub-expressions after the ELSE otherwise. Note
ENDFN that “ELSE IF expr” forms can be strung
together[[Model Builder's Guide Chapter 9#Control Expressions]]

==EQUAL TRUE==
(1) if the sub-expressions all evaluate to
the same value and FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==EXP(Expr)==
DESCRIPTION:
(Expr) base of the natural logarithm (e) to the power of
the expression
USAGE:
x=EXP(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Base of the natural logarithm (e) to the power of the expression

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=EXP(3)
=20.08553692
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

==FLOOR(Expr)==
DESCRIPTION:
The flooring operator

USAGE:
x=FLOOR(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Largest integer smaller than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=FLOOR(0.99)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
==GEOMETRIC MEAN==
geometric mean of the sub-expressions (nth
root of the product for n expressions)

[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER OR EQUAL==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >=, and
FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER THAN==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >, and
FALSE (0) otherwise

[[Model Builder's Guide Chapter 9#Composite Functions]]

==LOG(Expr)==
DESCRIPTION:
The logarithm operator

USAGE:
x=LOG(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Natural logarithm of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=LOG(0.773)
=-0.111820506
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ROUND(Expr)==
DESCRIPTION:
The rounding operator

USAGE:
x=ROUND(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Expression value rounded to the nearest integer

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=ROUND(0.773)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

Language Reference 1

2006-10-16T19:01:04Z

142.150.48.76:

== + ==
DESCRIPTION:
The addition operator, "+"

USAGE:
x=Expr+Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the expression is the sum of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=1+2
=3
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==-==
DESCRIPTION:
The subtraction operator

USAGE:
x=Expr-Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression minus the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=15-2
=13
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==*==
DESCRIPTION:
The multiplication operator

USAGE:
x=Expr*Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value is the product of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=5*4
=20
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==/==
DESCRIPTION:
The division operator

USAGE:
x=Expr/Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression divided by value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=60/6
=10
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==^==
DESCRIPTION:
The power operator

USAGE:
x=Expr^Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
The first expression to the power of the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=7^3
=343
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==%==
DESCRIPTION:
The percentage operator

USAGE:
x=Expr % Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression modulo the value of the second expression(assumes that the values of the expression are integers

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=19 % 12
=7

Example 2:
x=10 % 20
=10

Example 3:
x=10 % 10
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

======
DESCRIPTION:
The EQ operator or the alternate form of EQ comparison (Note: two equal signs distinguish this from an assignment). This is a Boolean function operator.

USAGE:
x=Expr==Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the == sign must equal to value on the right of the == sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|==9 (TRUE)
=1

Example 2:
x=2*8==4*4 (TRUE)
=1

Example 3:
x=2*0==-1 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!===
DESCRIPTION:
The not equal operator or the alternate form of NOT EQUAL comparison. This is a Boolean function operator.

USAGE:
x=Expr!=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the != sign does not equal to value on the right of the != sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|!=-9 (TRUE)
=1

Example 2:
x=2*8!=4*3 (TRUE)
=1

Example 3:
x=2*8!=2*8 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<21 (TRUE)
=1
Example 2:
x=-17<-17 (FALSE)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<=21 (TRUE)
=1

Example 2:
x=-17<=|-17| (TRUE)
=1

Example 3:
x=-17<=-18 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>2 (TRUE)
=1

Example 2:
x=5>5 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>=2 (TRUE)
=1

Example 2:
x=5>=5 (TRUE)
=1

Example 3:
x=5>=6 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!==
DESCRIPTION:
A Boolean function operator that negates the expression Boolean value.

USAGE:
x=!Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Negates the expression Boolean value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
y = TRUE
x=IF !y
THEN 3 ELSE 4
=4

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ABS(Expr)==
DESCRIPTION:
The absolute value operator

USAGE:
x=ABS(Expr)=|Expr|=Absolute(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Absolute value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=ABS(-9)=|-9|=Absolute(-9)
=9
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==AND==
DESCRIPTION:
A boolean operator that returns TRUE if two expressions are both TRUE, and FALSE otherwise.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Composite Functions]]

==ARCCOS==(Expr) inverse cos of the value of the expression [[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

==ARCCOS==
DESCRIPTION:
The arccos function operator

USAGE:
x=ARCCOS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCCOS(0.5)
=59.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCSIN==
DESCRIPTION:
The arcsin function operator

USAGE:
x=ARCSIN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse sine of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCSIN(1)
=89.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr)==
DESCRIPTION:
The arctan function operator

USAGE:
x=ARCTAN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(1)
=44.9999999999999

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr,Expr)==
DESCRIPTION:
The arcsin quadrant function operator

USAGE:
x=ARCTAN(Expr,Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan where first expression is x offset and second is y offset. Provideing two expressions gives more infomation about the quadrant

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(5,9)
=60.9453959009227

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==BITWISE OR==
(Expr, Expr) Bitwise OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE AND==
(Expr, Expr) Bitwise AND of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE XOR==
(Expr, Expr) Bitwise exclusive-OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE NOT==
Expr Bitwise NOT of a value[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]

==CEILING(Expr)==
DESCRIPTION:
The ceiling operator

USAGE:
x=CEILING(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Smallest integer larger than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=CEILING(0.01)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CEILING==
(Expr) smallest integer larger than the expression value[[Model Builder's Guide Chapter 9#Ceiling]]

==CLAMP==
(Expr, MinExpr, MaxExpr) clamp the value X of the expression to the range
[Min, Max]: if X < Min then return Min; if X < Max return Max. Otherwise return X.
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

==CLASSIFY==
(X) if the value of the variable X is equal to one of
CLASS Number: Expr the classes listed, then return the result of the.
: associated expression. Otherwise return 0.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X) return the result of the kth expression in the list,
Expr where k = X – minimum value of the variables
: (this may be non-0 only for layers)
:
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): ( Number+) return the kth number in the list, where
k = X – minimum value of the variable (this
may be non-0 only for layers)[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename uses the table in the named file, which is
assumed to consist of class:value pairs. Rarely
used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename Key uses the table in the named file, which is
assumed to consist of class:value pairs. The key
is used to specify a sub-table in a multi-table
file. Rarely used.

Classified functions use the variable as an index into the list of numbers or expressions that follow. The “CLASS” keyword is optional. This variable must be non-negative. If “CLASS # :” is used, then the number refers to the value of the indexing variable. If a class is not specified for a given value, its expression is implicitly ZERO. Interpolation tables are very similar except that the variable is assumed to be continuous instead of classified. An interpolated value between classes is returned. Lookup tables are also similar, except that both the variable and classes are assumed to be continuous values. An interpolated value between classes is also returned. Rarely used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFIED_DIST==
draw a value from a discrete distribution, where CLASS Number: Expr each expression determines the relative : probability of its associated class being drawn. ENDFN The CLASS keyword is optional.

==CLASSIFIED_DIST==
( Number+) in this form, the classes are assumed to start at zero. Only constant probabilities can be given.
==CLASSIFIED_DIST==
in this form, the classes are assumed to start at Expr zero :
ENDFN

==CLASSIFIED_DIST[M]==
In this form, the classes in a one-dimensional
array M, and so start at zero.
==COS==
DESCRIPTION:
The cos function operator

USAGE:
x=COS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=COS(0.5)
=0.99996192306417

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CRITICAL SECTION==
(Flag) Enter (if Flag is TRUE) or exit (if Flag is FALSE) a critical section. A critical section gives priority to this application, and is used for
synchronizing access to shared variables
(i.e. shared with another application).[[Model Builder's Guide Chapter 9#Control Expressions]]

==DEBUG==
Update the simulation probe, if it is loaded and
The event is selected. Used to debug/verify
event behaviour.[[Model Builder's Guide Chapter 9#Control Expressions]]

==DECISION==
Expr approximation of line between end cells
Cost surface and least-cost path regions are advanced features that are best understood with an example model.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr known location indices. If there is a decision expression, then only those cells for which this
expression returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location indices stored in one-dimensional X.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location index. If there is a decision expression,
then only those cells for which this expression
returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr defines a region centred on the current cell.
If there is a decision expression, then only
those cells for which this expression returns
TRUE will be included.

DistanceType is either CARDINAL or EUCLIDEAN (the default). Cardinal distance between two cells is the minimum number of cardinal steps (up, down, left, right) to reach one cell from the other. Euclidean distance is the straight-line distance between two points. The WRAPPED flag, if present indicates that the region wraps around the sides (vertically and horizontally) of the landscape (e.g. a location x positions beyond the right-hand side of a raster will be mapped to x positions in from the left-hand side of the raster). If not present, the landscape does not wrap.
[[Model Builder's Guide Chapter 9#Region Functions]]
DESCRIPTION:
Defines a region centred on the current cell. If there is a decision expression, then only those cells for which this expression returns TRUE will be included.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==DIRECTION==
(Expr, Expr) angle in degrees between two location indices
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==DISPLAY== Display on the screen the labelled Label: Expr values computed with the expressions listed.
…. If no label is given, the expression must
ENDFN be a variable, and this is used for the label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
==DISPLAY== Same as above, but only display if the DECISION Expr decision expression evaluates to TRUE
Label: Expr The keyword DECISION can be replaced by
…. a “?”
ENDFN
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Output to the record file of output variable the labelled values computed with the Label: Expr expressions listed. If no label is given, the
…. Expression must be a variable and this is
ENDFN used as label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Same as above, but only output if the DECISION Expr decision expression evaluates to TRUE
Label: Expr
….
ENDFN

==DISTANCE==
(Expr, Expr) distance between two location indices (normally
obtained using the Location variable). Thus,
DISTANCE(loc1, loc2) is
sqrt(sqr(loc1.x – loc2.x) + sqr(loc1.y – loc2.y))
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==ELSE==
expression evaluates to TRUE and the set of
… sub-expressions after the ELSE otherwise. Note
ENDFN that “ELSE IF expr” forms can be strung
together[[Model Builder's Guide Chapter 9#Control Expressions]]

==EQUAL TRUE==
(1) if the sub-expressions all evaluate to
the same value and FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==EXP(Expr)==
DESCRIPTION:
(Expr) base of the natural logarithm (e) to the power of
the expression
USAGE:
x=EXP(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Base of the natural logarithm (e) to the power of the expression

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=EXP(3)
=20.08553692
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

==FLOOR(Expr)==
DESCRIPTION:
The flooring operator

USAGE:
x=FLOOR(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Largest integer smaller than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=FLOOR(0.99)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
==GEOMETRIC MEAN==
geometric mean of the sub-expressions (nth
root of the product for n expressions)

[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER OR EQUAL==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >=, and
FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER THAN==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >, and
FALSE (0) otherwise

[[Model Builder's Guide Chapter 9#Composite Functions]]

==LOG(Expr)==
DESCRIPTION:
The logarithm operator

USAGE:
x=LOG(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Natural logarithm of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=LOG(0.773)
=-0.111820506
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ROUND(Expr)==
DESCRIPTION:
The rounding operator

USAGE:
x=ROUND(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Expression value rounded to the nearest integer

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=ROUND(0.773)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

Language Reference 1

2006-10-16T19:00:40Z

142.150.48.76:

=="+"==
DESCRIPTION:
The addition operator, "+"

USAGE:
x=Expr+Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the expression is the sum of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=1+2
=3
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==-==
DESCRIPTION:
The subtraction operator

USAGE:
x=Expr-Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression minus the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=15-2
=13
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==*==
DESCRIPTION:
The multiplication operator

USAGE:
x=Expr*Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value is the product of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=5*4
=20
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==/==
DESCRIPTION:
The division operator

USAGE:
x=Expr/Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression divided by value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=60/6
=10
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==^==
DESCRIPTION:
The power operator

USAGE:
x=Expr^Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
The first expression to the power of the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=7^3
=343
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==%==
DESCRIPTION:
The percentage operator

USAGE:
x=Expr % Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression modulo the value of the second expression(assumes that the values of the expression are integers

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=19 % 12
=7

Example 2:
x=10 % 20
=10

Example 3:
x=10 % 10
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

======
DESCRIPTION:
The EQ operator or the alternate form of EQ comparison (Note: two equal signs distinguish this from an assignment). This is a Boolean function operator.

USAGE:
x=Expr==Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the == sign must equal to value on the right of the == sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|==9 (TRUE)
=1

Example 2:
x=2*8==4*4 (TRUE)
=1

Example 3:
x=2*0==-1 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!===
DESCRIPTION:
The not equal operator or the alternate form of NOT EQUAL comparison. This is a Boolean function operator.

USAGE:
x=Expr!=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the != sign does not equal to value on the right of the != sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|!=-9 (TRUE)
=1

Example 2:
x=2*8!=4*3 (TRUE)
=1

Example 3:
x=2*8!=2*8 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<21 (TRUE)
=1
Example 2:
x=-17<-17 (FALSE)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<=21 (TRUE)
=1

Example 2:
x=-17<=|-17| (TRUE)
=1

Example 3:
x=-17<=-18 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>2 (TRUE)
=1

Example 2:
x=5>5 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>=2 (TRUE)
=1

Example 2:
x=5>=5 (TRUE)
=1

Example 3:
x=5>=6 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!==
DESCRIPTION:
A Boolean function operator that negates the expression Boolean value.

USAGE:
x=!Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Negates the expression Boolean value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
y = TRUE
x=IF !y
THEN 3 ELSE 4
=4

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ABS(Expr)==
DESCRIPTION:
The absolute value operator

USAGE:
x=ABS(Expr)=|Expr|=Absolute(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Absolute value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=ABS(-9)=|-9|=Absolute(-9)
=9
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==AND==
DESCRIPTION:
A boolean operator that returns TRUE if two expressions are both TRUE, and FALSE otherwise.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Composite Functions]]

==ARCCOS==(Expr) inverse cos of the value of the expression [[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

==ARCCOS==
DESCRIPTION:
The arccos function operator

USAGE:
x=ARCCOS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCCOS(0.5)
=59.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCSIN==
DESCRIPTION:
The arcsin function operator

USAGE:
x=ARCSIN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse sine of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCSIN(1)
=89.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr)==
DESCRIPTION:
The arctan function operator

USAGE:
x=ARCTAN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(1)
=44.9999999999999

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr,Expr)==
DESCRIPTION:
The arcsin quadrant function operator

USAGE:
x=ARCTAN(Expr,Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan where first expression is x offset and second is y offset. Provideing two expressions gives more infomation about the quadrant

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(5,9)
=60.9453959009227

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==BITWISE OR==
(Expr, Expr) Bitwise OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE AND==
(Expr, Expr) Bitwise AND of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE XOR==
(Expr, Expr) Bitwise exclusive-OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE NOT==
Expr Bitwise NOT of a value[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]

==CEILING(Expr)==
DESCRIPTION:
The ceiling operator

USAGE:
x=CEILING(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Smallest integer larger than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=CEILING(0.01)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CEILING==
(Expr) smallest integer larger than the expression value[[Model Builder's Guide Chapter 9#Ceiling]]

==CLAMP==
(Expr, MinExpr, MaxExpr) clamp the value X of the expression to the range
[Min, Max]: if X < Min then return Min; if X < Max return Max. Otherwise return X.
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

==CLASSIFY==
(X) if the value of the variable X is equal to one of
CLASS Number: Expr the classes listed, then return the result of the.
: associated expression. Otherwise return 0.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X) return the result of the kth expression in the list,
Expr where k = X – minimum value of the variables
: (this may be non-0 only for layers)
:
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): ( Number+) return the kth number in the list, where
k = X – minimum value of the variable (this
may be non-0 only for layers)[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename uses the table in the named file, which is
assumed to consist of class:value pairs. Rarely
used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename Key uses the table in the named file, which is
assumed to consist of class:value pairs. The key
is used to specify a sub-table in a multi-table
file. Rarely used.

Classified functions use the variable as an index into the list of numbers or expressions that follow. The “CLASS” keyword is optional. This variable must be non-negative. If “CLASS # :” is used, then the number refers to the value of the indexing variable. If a class is not specified for a given value, its expression is implicitly ZERO. Interpolation tables are very similar except that the variable is assumed to be continuous instead of classified. An interpolated value between classes is returned. Lookup tables are also similar, except that both the variable and classes are assumed to be continuous values. An interpolated value between classes is also returned. Rarely used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFIED_DIST==
draw a value from a discrete distribution, where CLASS Number: Expr each expression determines the relative : probability of its associated class being drawn. ENDFN The CLASS keyword is optional.

==CLASSIFIED_DIST==
( Number+) in this form, the classes are assumed to start at zero. Only constant probabilities can be given.
==CLASSIFIED_DIST==
in this form, the classes are assumed to start at Expr zero :
ENDFN

==CLASSIFIED_DIST[M]==
In this form, the classes in a one-dimensional
array M, and so start at zero.
==COS==
DESCRIPTION:
The cos function operator

USAGE:
x=COS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=COS(0.5)
=0.99996192306417

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CRITICAL SECTION==
(Flag) Enter (if Flag is TRUE) or exit (if Flag is FALSE) a critical section. A critical section gives priority to this application, and is used for
synchronizing access to shared variables
(i.e. shared with another application).[[Model Builder's Guide Chapter 9#Control Expressions]]

==DEBUG==
Update the simulation probe, if it is loaded and
The event is selected. Used to debug/verify
event behaviour.[[Model Builder's Guide Chapter 9#Control Expressions]]

==DECISION==
Expr approximation of line between end cells
Cost surface and least-cost path regions are advanced features that are best understood with an example model.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr known location indices. If there is a decision expression, then only those cells for which this
expression returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location indices stored in one-dimensional X.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location index. If there is a decision expression,
then only those cells for which this expression
returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr defines a region centred on the current cell.
If there is a decision expression, then only
those cells for which this expression returns
TRUE will be included.

DistanceType is either CARDINAL or EUCLIDEAN (the default). Cardinal distance between two cells is the minimum number of cardinal steps (up, down, left, right) to reach one cell from the other. Euclidean distance is the straight-line distance between two points. The WRAPPED flag, if present indicates that the region wraps around the sides (vertically and horizontally) of the landscape (e.g. a location x positions beyond the right-hand side of a raster will be mapped to x positions in from the left-hand side of the raster). If not present, the landscape does not wrap.
[[Model Builder's Guide Chapter 9#Region Functions]]
DESCRIPTION:
Defines a region centred on the current cell. If there is a decision expression, then only those cells for which this expression returns TRUE will be included.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==DIRECTION==
(Expr, Expr) angle in degrees between two location indices
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==DISPLAY== Display on the screen the labelled Label: Expr values computed with the expressions listed.
…. If no label is given, the expression must
ENDFN be a variable, and this is used for the label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
==DISPLAY== Same as above, but only display if the DECISION Expr decision expression evaluates to TRUE
Label: Expr The keyword DECISION can be replaced by
…. a “?”
ENDFN
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Output to the record file of output variable the labelled values computed with the Label: Expr expressions listed. If no label is given, the
…. Expression must be a variable and this is
ENDFN used as label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Same as above, but only output if the DECISION Expr decision expression evaluates to TRUE
Label: Expr
….
ENDFN

==DISTANCE==
(Expr, Expr) distance between two location indices (normally
obtained using the Location variable). Thus,
DISTANCE(loc1, loc2) is
sqrt(sqr(loc1.x – loc2.x) + sqr(loc1.y – loc2.y))
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==ELSE==
expression evaluates to TRUE and the set of
… sub-expressions after the ELSE otherwise. Note
ENDFN that “ELSE IF expr” forms can be strung
together[[Model Builder's Guide Chapter 9#Control Expressions]]

==EQUAL TRUE==
(1) if the sub-expressions all evaluate to
the same value and FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==EXP(Expr)==
DESCRIPTION:
(Expr) base of the natural logarithm (e) to the power of
the expression
USAGE:
x=EXP(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Base of the natural logarithm (e) to the power of the expression

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=EXP(3)
=20.08553692
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

==FLOOR(Expr)==
DESCRIPTION:
The flooring operator

USAGE:
x=FLOOR(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Largest integer smaller than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=FLOOR(0.99)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
==GEOMETRIC MEAN==
geometric mean of the sub-expressions (nth
root of the product for n expressions)

[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER OR EQUAL==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >=, and
FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER THAN==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >, and
FALSE (0) otherwise

[[Model Builder's Guide Chapter 9#Composite Functions]]

==LOG(Expr)==
DESCRIPTION:
The logarithm operator

USAGE:
x=LOG(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Natural logarithm of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=LOG(0.773)
=-0.111820506
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ROUND(Expr)==
DESCRIPTION:
The rounding operator

USAGE:
x=ROUND(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Expression value rounded to the nearest integer

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=ROUND(0.773)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

Language Reference 1

2006-10-16T18:54:07Z

142.150.48.76:

==plus sign==
DESCRIPTION:
The addition operator, "+"

USAGE:
x=Expr+Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the expression is the sum of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=1+2
=3
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==-==
DESCRIPTION:
The subtraction operator

USAGE:
x=Expr-Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression minus the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=15-2
=13
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==*==
DESCRIPTION:
The multiplication operator

USAGE:
x=Expr*Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value is the product of two expressions

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=5*4
=20
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==/==
DESCRIPTION:
The division operator

USAGE:
x=Expr/Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression divided by value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=60/6
=10
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==^==
DESCRIPTION:
The power operator

USAGE:
x=Expr^Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
The first expression to the power of the value of the second expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=7^3
=343
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==%==
DESCRIPTION:
The percentage operator

USAGE:
x=Expr % Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value of the first expression modulo the value of the second expression(assumes that the values of the expression are integers

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=19 % 12
=7

Example 2:
x=10 % 20
=10

Example 3:
x=10 % 10
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

======
DESCRIPTION:
The EQ operator or the alternate form of EQ comparison (Note: two equal signs distinguish this from an assignment). This is a Boolean function operator.

USAGE:
x=Expr==Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the == sign must equal to value on the right of the == sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|==9 (TRUE)
=1

Example 2:
x=2*8==4*4 (TRUE)
=1

Example 3:
x=2*0==-1 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!===
DESCRIPTION:
The not equal operator or the alternate form of NOT EQUAL comparison. This is a Boolean function operator.

USAGE:
x=Expr!=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Value on the left of the != sign does not equal to value on the right of the != sign.

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=|-9|!=-9 (TRUE)
=1

Example 2:
x=2*8!=4*3 (TRUE)
=1

Example 3:
x=2*8!=2*8 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<21 (TRUE)
=1
Example 2:
x=-17<-17 (FALSE)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==<===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is less than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr<=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=17<=21 (TRUE)
=1

Example 2:
x=-17<=|-17| (TRUE)
=1

Example 3:
x=-17<=-18 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>==
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>2 (TRUE)
=1

Example 2:
x=5>5 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==>===
DESCRIPTION:
A Boolean function operator that returns TRUE(1) if the value of the first expression is greater than or equal to the value of the second expression; otherwise FALSE(0).

USAGE:
x=Expr>=Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Either TRUE(1) or FALSE(0)

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=5>=2 (TRUE)
=1

Example 2:
x=5>=5 (TRUE)
=1

Example 3:
x=5>=6 (FALSE)
=0

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==!==
DESCRIPTION:
A Boolean function operator that negates the expression Boolean value.

USAGE:
x=!Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Negates the expression Boolean value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
y = TRUE
x=IF !y
THEN 3 ELSE 4
=4

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ABS(Expr)==
DESCRIPTION:
The absolute value operator

USAGE:
x=ABS(Expr)=|Expr|=Absolute(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Absolute value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

Example 1:
x=ABS(-9)=|-9|=Absolute(-9)
=9
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==AND==
DESCRIPTION:
A boolean operator that returns TRUE if two expressions are both TRUE, and FALSE otherwise.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Composite Functions]]

==ARCCOS==(Expr) inverse cos of the value of the expression [[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

==ARCCOS==
DESCRIPTION:
The arccos function operator

USAGE:
x=ARCCOS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCCOS(0.5)
=59.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCSIN==
DESCRIPTION:
The arcsin function operator

USAGE:
x=ARCSIN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse sine of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCSIN(1)
=89.9999999999998

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr)==
DESCRIPTION:
The arctan function operator

USAGE:
x=ARCTAN(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(1)
=44.9999999999999

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ARCTAN(Expr,Expr)==
DESCRIPTION:
The arcsin quadrant function operator

USAGE:
x=ARCTAN(Expr,Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse tan where first expression is x offset and second is y offset. Provideing two expressions gives more infomation about the quadrant

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=ARCTAN(5,9)
=60.9453959009227

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==BITWISE OR==
(Expr, Expr) Bitwise OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE AND==
(Expr, Expr) Bitwise AND of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE XOR==
(Expr, Expr) Bitwise exclusive-OR of two values[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]
==BITWISE NOT==
Expr Bitwise NOT of a value[[Model Builder's Guide Chapter 9#Bit-Vector Functions]]

==CEILING(Expr)==
DESCRIPTION:
The ceiling operator

USAGE:
x=CEILING(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Smallest integer larger than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=CEILING(0.01)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CEILING==
(Expr) smallest integer larger than the expression value[[Model Builder's Guide Chapter 9#Ceiling]]

==CLAMP==
(Expr, MinExpr, MaxExpr) clamp the value X of the expression to the range
[Min, Max]: if X < Min then return Min; if X < Max return Max. Otherwise return X.
[[Model Builder's Guide Chapter 9#Continuous Functions (Arithmetic Functions)]]

==CLASSIFY==
(X) if the value of the variable X is equal to one of
CLASS Number: Expr the classes listed, then return the result of the.
: associated expression. Otherwise return 0.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X) return the result of the kth expression in the list,
Expr where k = X – minimum value of the variables
: (this may be non-0 only for layers)
:
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]
ENDFN
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): ( Number+) return the kth number in the list, where
k = X – minimum value of the variable (this
may be non-0 only for layers)[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename uses the table in the named file, which is
assumed to consist of class:value pairs. Rarely
used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFY==
(X): Filename Key uses the table in the named file, which is
assumed to consist of class:value pairs. The key
is used to specify a sub-table in a multi-table
file. Rarely used.

Classified functions use the variable as an index into the list of numbers or expressions that follow. The “CLASS” keyword is optional. This variable must be non-negative. If “CLASS # :” is used, then the number refers to the value of the indexing variable. If a class is not specified for a given value, its expression is implicitly ZERO. Interpolation tables are very similar except that the variable is assumed to be continuous instead of classified. An interpolated value between classes is returned. Lookup tables are also similar, except that both the variable and classes are assumed to be continuous values. An interpolated value between classes is also returned. Rarely used.
[[Model Builder's Guide Chapter 9#Classified and Discrete Functions]]

==CLASSIFIED_DIST==
draw a value from a discrete distribution, where CLASS Number: Expr each expression determines the relative : probability of its associated class being drawn. ENDFN The CLASS keyword is optional.

==CLASSIFIED_DIST==
( Number+) in this form, the classes are assumed to start at zero. Only constant probabilities can be given.
==CLASSIFIED_DIST==
in this form, the classes are assumed to start at Expr zero :
ENDFN

==CLASSIFIED_DIST[M]==
In this form, the classes in a one-dimensional
array M, and so start at zero.
==COS==
DESCRIPTION:
The cos function operator

USAGE:
x=COS(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Inverse cos of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Continuous Functions (Trigonometric Functions)]]

Example 1:
x=COS(0.5)
=0.99996192306417

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==CRITICAL SECTION==
(Flag) Enter (if Flag is TRUE) or exit (if Flag is FALSE) a critical section. A critical section gives priority to this application, and is used for
synchronizing access to shared variables
(i.e. shared with another application).[[Model Builder's Guide Chapter 9#Control Expressions]]

==DEBUG==
Update the simulation probe, if it is loaded and
The event is selected. Used to debug/verify
event behaviour.[[Model Builder's Guide Chapter 9#Control Expressions]]

==DECISION==
Expr approximation of line between end cells
Cost surface and least-cost path regions are advanced features that are best understood with an example model.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr known location indices. If there is a decision expression, then only those cells for which this
expression returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location indices stored in one-dimensional X.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION== Expr location index. If there is a decision expression,
then only those cells for which this expression
returns TRUE will be included.
[[Model Builder's Guide Chapter 9#Region Functions]]

==DECISION==
Expr defines a region centred on the current cell.
If there is a decision expression, then only
those cells for which this expression returns
TRUE will be included.

DistanceType is either CARDINAL or EUCLIDEAN (the default). Cardinal distance between two cells is the minimum number of cardinal steps (up, down, left, right) to reach one cell from the other. Euclidean distance is the straight-line distance between two points. The WRAPPED flag, if present indicates that the region wraps around the sides (vertically and horizontally) of the landscape (e.g. a location x positions beyond the right-hand side of a raster will be mapped to x positions in from the left-hand side of the raster). If not present, the landscape does not wrap.
[[Model Builder's Guide Chapter 9#Region Functions]]
DESCRIPTION:
Defines a region centred on the current cell. If there is a decision expression, then only those cells for which this expression returns TRUE will be included.

USAGE:
x= Expr AND Expr

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
TRUE (1) if all sub-expressions evaluate to TRUE and FALSE (0) otherwise

NOTES:

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=(3>6) AND (14>9)
=FALSE(0)

Example 2:
x=(6>3) AND (14>9)
=TRUE(1)

Example 3:
x=10 AND (9<14)
=10

Example 4:
x=10 AND -5
=-50

<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==DIRECTION==
(Expr, Expr) angle in degrees between two location indices
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==DISPLAY== Display on the screen the labelled Label: Expr values computed with the expressions listed.
…. If no label is given, the expression must
ENDFN be a variable, and this is used for the label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
==DISPLAY== Same as above, but only display if the DECISION Expr decision expression evaluates to TRUE
Label: Expr The keyword DECISION can be replaced by
…. a “?”
ENDFN
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Output to the record file of output variable the labelled values computed with the Label: Expr expressions listed. If no label is given, the
…. Expression must be a variable and this is
ENDFN used as label.
[[Model Builder's Guide Chapter 9#Output Expressions]]
OUTPUT RECORD(OutputVar) Same as above, but only output if the DECISION Expr decision expression evaluates to TRUE
Label: Expr
….
ENDFN

==DISTANCE==
(Expr, Expr) distance between two location indices (normally
obtained using the Location variable). Thus,
DISTANCE(loc1, loc2) is
sqrt(sqr(loc1.x – loc2.x) + sqr(loc1.y – loc2.y))
[[Model Builder's Guide Chapter 9#Continuous Functions (Miscellaneous)]]

==ELSE==
expression evaluates to TRUE and the set of
… sub-expressions after the ELSE otherwise. Note
ENDFN that “ELSE IF expr” forms can be strung
together[[Model Builder's Guide Chapter 9#Control Expressions]]

==EQUAL TRUE==
(1) if the sub-expressions all evaluate to
the same value and FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==EXP(Expr)==
DESCRIPTION:
(Expr) base of the natural logarithm (e) to the power of
the expression
USAGE:
x=EXP(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Base of the natural logarithm (e) to the power of the expression

SEE ALSO:
<a link to the composite functions section of seles modellers guide>

Example 1:
x=EXP(3)
=20.08553692
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
[[Model Builder's Guide Chapter 9#Expressions:]]

==FLOOR(Expr)==
DESCRIPTION:
The flooring operator

USAGE:
x=FLOOR(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Largest integer smaller than the expression value

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=FLOOR(0.99)
=0
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>
==GEOMETRIC MEAN==
geometric mean of the sub-expressions (nth
root of the product for n expressions)

[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER OR EQUAL==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >=, and
FALSE (0) otherwise
[[Model Builder's Guide Chapter 9#Composite Functions]]

==GREATER THAN==
TRUE (1) if the sub-expression evaluations are
all ordered according to the relation >, and
FALSE (0) otherwise

[[Model Builder's Guide Chapter 9#Composite Functions]]

==LOG(Expr)==
DESCRIPTION:
The logarithm operator

USAGE:
x=LOG(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Natural logarithm of the value of the expression

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=LOG(0.773)
=-0.111820506
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>

==ROUND(Expr)==
DESCRIPTION:
The rounding operator

USAGE:
x=ROUND(Expr)

REQUIRED ARGUMENTS:
Expr is any expression that evaluates to single numeric value

VALUE:
Expression value rounded to the nearest integer

SEE ALSO:
[[Model Builder's Guide Chapter 9#Expressions:]]

Example 1:
x=ROUND(0.773)
=1
<figure out an end example indicator. For example, ***>

SAMPLE MODELS:
<links to sample models where this function is used>