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Re: checking if variable is defined [message #24774 is a reply to message #24625]

Wed, 11 April 2001 09:59

davidf
Messages: 2866
Registered: September 1996

Senior Member

Dominik (dpaul@ukl.uni-freiburg.de) writes:

> I would like to plot a variable, but only if it is existing. When the
> Variable is undefined, nothing should happen. So I am searching for an
> expression for the if statement. Does anybody know an expression like:
> if ( vaiable_name existing) then...

IF N_Elements(variable_name) NE 0 THEN doSomething

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
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[Message index]

		checking if variable is defined By: Dominik[1] on Wed, 11 April 2001 08:47
		Re: checking if variable is defined By: Bernard Puc on Thu, 12 April 2001 05:19
		Re: checking if variable is defined By: davidf on Wed, 11 April 2001 09:59

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