Difference between revisions of "ParseNum"

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Parses a string to a numeric value.   
 
Parses a string to a numeric value.   
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In [[What's new in Analytica 4.2?|Analytica 4.2]] or later, you can use use [[ParseNumber]], which is built-in.
  
 
= Library =
 
= Library =
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= See Also =
 
= See Also =
  
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* [[ParseNumber]]
 
* [[ParseDate]]
 
* [[ParseDate]]
 
* [[ReadTextFile]], [[ReadCsvFile]]
 
* [[ReadTextFile]], [[ReadCsvFile]]
 
* [[Function Parameter Qualifiers]] (especially the '''coerce''' qualifier)
 
* [[Function Parameter Qualifiers]] (especially the '''coerce''' qualifier)

Revision as of 17:35, 26 February 2009


ParseNum(x)

Parses a string to a numeric value.

In Analytica 4.2 or later, you can use use ParseNumber, which is built-in.

Library

Flat File Library.ana

(Use File → Add Library... to add this library)

Example

ParseNum("3.14") → 3.14

Notes

If x is already numeric, x is returned.

An array can be passed, in which each cell of the array is parsed.

When x does not parse as a numeric value, such as ParseNum("hello"), the following error occurs:

Evaluation Error: In the call to function Coerce_to_numeric, a value passed to the first parameter, x, could not be coerced to type Numeric, while evaluating function ParseNum.

ParseNum is often useful when reading data from flat files, using ReadCsvFile or ReadTextFile.

Coercion to numeric can be accomplished in Analytica in other ways. For example, you can declare a function parameter with the qualifiers "coerce numeric". Then a string value passed to that parameter is parsed. The calling variable needs to have a non-date number format, since the number format of the calling object determines how the value is interpreted.

See Also

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