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Re: Non-intuitive result with !Null in Where() [message #85611 is a reply to message #85610]

Wed, 21 August 2013 09:48

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Matthew Argall writes:

> The Where function is telling me I can access !Null at element 0, but I cannot.
>
> IDL> print, !version
> { x86_64 darwin unix Mac OS X 8.0 Jun 17 2010 64 64}

No, the Where function is telling you that !Null is not equal to 0 and
there is 1 element where this is true in the comparison expression.

Seems perfectly reasonable to me.

Cheers,

David

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

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[Message index]

		Non-intuitive result with !Null in Where() By: Matthew Argall on Wed, 21 August 2013 09:42
		Re: Non-intuitive result with !Null in Where() By: David Fanning on Wed, 21 August 2013 09:48
		Re: Non-intuitive result with !Null in Where() By: Matthew Argall on Wed, 21 August 2013 10:52
		Re: Non-intuitive result with !Null in Where() By: Heinz Stege on Wed, 21 August 2013 16:51

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