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Re: negative indices, am I missing something here? [message #81989 is a reply to message #81987]

Fri, 02 November 2012 14:53

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

fawltylanguage@gmail.com writes:

> Array subscripts are always clipped. From IDL help:
>
> "If an element of the subscript array is less than or equal to zero, the first element of the subscripted array is selected. ...
>
> Note: Because of the confusion between the clipping of array subscripts and the use of negative indices (see the next section), it is best to avoid using code that relies on this clipping behavior."

You can think of it as karmic justice for sins of the past. ;-)

Cheers,

David

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

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[Message index]

		Re: negative indices, am I missing something here? By: d.rowenhorst@gmail.co on Tue, 06 November 2012 04:20
		Re: negative indices, am I missing something here? By: David Fanning on Fri, 02 November 2012 15:36
		Re: negative indices, am I missing something here? By: Michael Galloy on Fri, 02 November 2012 15:26
		Re: negative indices, am I missing something here? By: David Fanning on Fri, 02 November 2012 14:53
		Re: negative indices, am I missing something here? By: Lajos Foldy on Fri, 02 November 2012 14:39

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