Difference between revisions of "IndexValue"

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= IndexValue(I) =
 
= IndexValue(I) =
  
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Returns the index value for the given variable or index.
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Returns the index value for the given variable or index I. Some variables have both an index  
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value and a result value. Examples include -- a [[Self-Indexed Arrays|self-indexed array]]; a variable or index defined as a list of identifiers or list of expressions; and a Choice list with a self-domain. IndexValue(I) returns the index value of I, where (I) alone would return its result value.
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In Analytica, a variable may have both an index value and a result value. This may occur in a [[Self-Indexed Arrays|self-indexed array]], in a variable or index defined as a list of identifiers or list of expressions, or in a Choice list with a self-domain, to list a few examples.
 
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The IndexValue function gives you access to the index value from a value context.
 
  
 
= Library =
 
= Library =

Revision as of 01:53, 20 August 2007

What's new in Analytica 4.0? >

(new to Analyica 4.0, requires build 4.0.0.33 or later)

IndexValue(I)

Returns the index value for the given variable or index I. Some variables have both an index value and a result value. Examples include -- a self-indexed array; a variable or index defined as a list of identifiers or list of expressions; and a Choice list with a self-domain. IndexValue(I) returns the index value of I, where (I) alone would return its result value.

Library

Array Functions

Details

The IndexValue function, if it weren't built-in, could easily be defined within Analytica 4.0 as: 

Function IndexValue( I : IndexType ) := I

This definition, however, requires Analytica 4.0 or later.

Examples

 Index L := [I,J,K,"value"]
 Index rows := 1..Size(A)
 Variable Flat_A := MdArrayToTable( A, rows, IndexValue(L) )

Download example model file File:IndexValueFunctionEg.ANA.

See Also

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