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Re: How to store compressed data ? [message #68808]

Tue, 01 December 2009 13:03

rogass
Messages: 200
Registered: April 2008

Senior Member

On 1 Dez., 16:00, nata <bernat.puigdomen...@gmail.com> wrote:
> Using HDF_PACKDATA I don't see the difference:
>
> aa=fltarr(240,360,24,47,2)
> help, /mem
> heap memory used: 780326120, max: 1559999875, gets: 1126,
> frees: 317
>
> rr=hdf_packdata(aa)
> aa=0l
> help, /mem
> heap memory used: 780326085, max: 1559999860, gets: 1143,
> frees: 334

Strange... Maybe you will find some appraoches here:
http://www.astro.washington.edu/docs/idl/htmlhelp/index.html or maybe
one of the IDL-gurus has an idea :) If not, then you may use some ENVI
routines which can handle handle compressed data in memory (slows
drastically down). Some of lossless compressing techniques such as RLE
or LZW maybe also interesting...

CR

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[Message index]

		Re: How to store compressed data ? By: rogass on Tue, 01 December 2009 13:03
		Re: How to store compressed data ? By: natha on Tue, 01 December 2009 07:00
		Re: How to store compressed data ? By: natha on Tue, 01 December 2009 06:56
		Re: How to store compressed data ? By: rogass on Tue, 01 December 2009 00:02

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