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Re: array subscripting [message #69145 is a reply to message #43426]

Fri, 11 December 2009 08:43

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Dave Higgins writes:

> Thanks for your reply. Sorry I wasn't clear in my post. I was
> wondering if there's a better way, in terms of memory management. I.e.
> not creating a second huge array (phi after the rebin), when the
> useful information is a 1d vector.

The IDL Way often involves trade-offs between speed and
memory. A judicious use of a FOR loop might be called
for here, if memory usage is getting ridiculous. But
I would think about transposing your array so that if
you do settle on a loop solution your multiplications
occur on rows of data and not columns of data. Looping
on columns is sure to be slow, slow, slow.

Cheers,

David

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

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[Message index]

		array subscripting problem By: m.doyle on Mon, 11 April 2005 06:00
		Re: array subscripting By: David Fanning on Fri, 11 December 2009 08:43
		Re: array subscripting By: David Higgins on Fri, 11 December 2009 08:29
		Re: array subscripting By: David Fanning on Fri, 11 December 2009 06:41

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