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Re: calling a structure tag as a variable? [message #79442 is a reply to message #79441]

Mon, 27 February 2012 08:58

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Paul van Delst writes:

> How about something like:
>
>
> PRO process_mystructure, $
> mystructure, $ ; The structure
> tag ; The tag name on which to operate
>
> tag_idx = WHERE(TAG_NAMES(mystructure) EQ tag, count)
> IF ( count NE 1 ) THEN MESSAGE, 'Invalid input tag'
>
> ; Pull out data to operate on
> data = mystructure.(tag_idx[0])
>
> ....operate on data...calling separate, generic procedure?
>
> ; Stick it back in the structure
> mystructure.(tag_idx[0]) = data
>
> END

I'd remember to make that tag UPPERCASE or you
are *never* going to find it! ;-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: calling a structure tag as a variable? By: desertdryad on Mon, 27 February 2012 11:28
		Re: calling a structure tag as a variable? By: Paul Van Delst[1] on Mon, 27 February 2012 09:06
		Re: calling a structure tag as a variable? By: Lajos Foldy on Mon, 27 February 2012 08:55
		Re: calling a structure tag as a variable? By: David Fanning on Mon, 27 February 2012 08:58
		Re: calling a structure tag as a variable? By: Paul Van Delst[1] on Mon, 27 February 2012 08:52

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