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Utilities/

undefine.pro

erase a variable same thing like DELVAR but usable in a program and usable for one variable simultaneously

undefine Utilities

undefine, varname

Parameters

varname        in required

The name of the variable we want erase

Examples

   IDL> a=1
   IDL> undefine,a
 % Compiled module: UNDEFINE.
   IDL> help, a
 A               UNDEFINED = 

    

Version history

Version

$Id: undefine.pro 389 2009-01-27 08:59:35Z smasson $

History

trouve sur la page web de D.Fanning : QUESTION: How do I make an IDL variable have a type "undefined"? ANSWER: At the main IDL level you can use the IDL procedure DELVAR to delete an IDL variable and make it undefined. Inside of procedures and functions, I use this little program named undefine that I got from Andrew Cool at the DSTO High Frequency Radar Division in Adelaide, Australia.

 


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