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Re: Cannot allocate memory! [message #47045 is a reply to message #47044]

Mon, 16 January 2006 12:26

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

"Sheldon" <shejo284@gmail.com> writes:
> Hi everyone,
>
> I am working with very large arrays of varying quantities, i.e.,
> sometimes I have 89 arrays and other times I have 200 arrays. Now I
> would like to average these arrays and reduce them to one array.
> I use the MAKE_ARRAY() function but IDL screams that it cannot allocate
> the memory.
> Now these arrays are quite large (1215,1215) and I only need to hold
> them within a function and then they are averaged using MEAN().
> Is there away to do this so that IDL can allocate the memory?
> IDl complains about this:
> tmp = make_array([119,1215,1215], /float). I was thinking about
> changing to /integer but I think is not such a good fix.

If all you are doing is straight averaging, then you can average each
1215x1215 slice individually using a FOR loop, and then average those
averages. That allows you to keep only one image in memory at a time.

Good luck,
Craig

--
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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@REMOVEcow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		Re: Cannot allocate memory! By: Liberum on Tue, 17 January 2006 09:43
		Re: Cannot allocate memory! By: Craig Markwardt on Tue, 17 January 2006 02:28
		Re: Cannot allocate memory! By: Liberum on Tue, 17 January 2006 00:56
		Re: Cannot allocate memory! By: David Fanning on Mon, 16 January 2006 13:09
		Re: Cannot allocate memory! By: Liberum on Mon, 16 January 2006 12:57
		Re: Cannot allocate memory! By: Liberum on Mon, 16 January 2006 12:47
		Re: Cannot allocate memory! By: Craig Markwardt on Mon, 16 January 2006 12:26
		Re: Cannot allocate memory! By: David Fanning on Mon, 16 January 2006 12:25

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