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Re: Retrieving elements of function returns [message #41815 is a reply to message #41813]

Thu, 25 November 2004 05:03

Paolo Grigis
Messages: 171
Registered: December 2003

Senior Member

Ben Panter wrote:
> Hello All,
>
> Bit of an odd request this. I've recently found that I can take the
> nth element of a returned array by enlosing the function in brackets and
> then appending an array subscript:
>
> n_pix=(size(grid))[1]
>
> which is a bit neater than
>
> n_pix=size(grid)
> n_pix=n_pix[1]
>
> I've had a look though the online help, and I can't decide if this is a
> reasonable thing to do or not -- primarily I'm concerned that this is
> some sort of undocumented feature which may disappear in later versions.
>
> Can someone reassure me that it's ok?!

This is documented in the manual "Building IDL Applications",
Chapter 6, Section Array Subscripts, p.123 in the IDL 6.0 version.

Ciao,
Paolo

>
> Cheers,
>
> Ben
>

--
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Paolo Grigis
ETHZ - Institute of Astronomy email: pgrigis@astro.phys.ethz.ch
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ETH Zentrum phone: ++41 1 632 42 20
8092 Zurich fax : ++41 1 632 12 05
Switzerland http://www.astro.phys.ethz.ch/
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[Message index]

		Re: Retrieving elements of function returns By: Ben Panter on Thu, 25 November 2004 05:43
		Re: Retrieving elements of function returns By: Paolo Grigis on Thu, 25 November 2004 05:03
		Re: Retrieving elements of function returns By: David Fanning on Thu, 25 November 2004 05:03

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