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Re: Tough System Variable Question for the IDL Gurus [message #68630 is a reply to message #68625]

Wed, 11 November 2009 14:26

Foldy Lajos
Messages: 268
Registered: October 2001

Senior Member

On Wed, 11 Nov 2009, David Fanning wrote:

> OK, you IDL gurus. How do you delete an IDL system variable
> you have created with DefSysV without getting out of the IDL session?
>
> IDL> DefSysV, '!TESTER', 5
> IDL> DelVar, !TESTER
> % DELVAR: Expression must be named variable in this context: <INT
> ( 5)>.
>
> IDL> Undefine, !Tester
> IDL> Help, !Tester
> <Expression> INT = 5
>
> My current thinking is that it is not possible. Any good ideas?
>
> Cheers,
>
> David
>

You are right, it is not possible:

"System variables have a predefined type and structure that cannot be
changed." (IDL Reference Guide)

regards,
Lajos

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[Message index]

		Re: Tough System Variable Question for the IDL Gurus By: David Fanning on Wed, 11 November 2009 17:51
		Re: Tough System Variable Question for the IDL Gurus By: David Fanning on Wed, 11 November 2009 17:45
		Re: Tough System Variable Question for the IDL Gurus By: ben.bighair on Wed, 11 November 2009 16:12
		Re: Tough System Variable Question for the IDL Gurus By: Foldy Lajos on Wed, 11 November 2009 14:26

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