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Re: Clever Where() test [message #4370 is a reply to message #4366]

Thu, 25 May 1995 00:00

thompson
Messages: 584
Registered: August 1991

Senior Member

Paul Probert <probert@uwmfe.neep.wisc.edu> writes:

> IDL allows you to give a zero subscript to a scalar,
> so you can say:
> i=WHERE(...)
> IF i(0) EQ -1 THEN BEGIN
> ...
>
> One word of caution. If you have a scalar element of a structure,
> for some reason you can't do this:
> x={i:0,j:1}
> IF x.i(0) ... ;bombs
> But you can make it work with more parentheses:
> IF (x.i)(0) ... ;works
>
> Paul Probert
> University of Wisconsin

So does x(0).i

Bill Thompson

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[Message index]

		Re: Clever Where() test By: steinhh on Fri, 26 May 1995 00:00
		Re: Clever Where() test By: thompson on Thu, 25 May 1995 00:00
		Re: Clever Where() test By: Paul Probert on Thu, 25 May 1995 00:00
		Re: Clever Where() test By: thompson on Thu, 25 May 1995 00:00
		Re: Clever Where() test By: bertin on Thu, 25 May 1995 00:00
		Re: Clever Where() test By: afl on Wed, 24 May 1995 00:00
		Re: Clever Where() test By: offenbrg on Tue, 30 May 1995 00:00
		Re: Clever Where() test By: thompson on Tue, 30 May 1995 00:00

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