| Re: Memory Allocation Problem- IDL 8.2 [message #82009 is a reply to message #81925] |
Tue, 13 November 2012 06:34  |
titan
Messages: 59
Registered: March 2006
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Member |
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On Friday, November 9, 2012 3:09:20 PM UTC+1, David Fanning wrote:
> titan writes:
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>> if I try to run the following code lines
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>> utm_fname=IMAGE(png_fname, GEOTIFF=geotag)
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>> utm_fname.SAVE,png_fname+'.kmz'
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>> I get the following error:
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>> SAVE: Unable to allocate memory: to make array.
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>> and the dimensions of the image are:
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>> PNG_IMAGE BYTE = Array[3783, 4318]
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>> I surfed the web and I find some interesting articles like the following one:
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>> http://www.idlcoyote.com/misc_tips/idl8mem.html
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>> but it seems that the problems is still present even ii was supposed to be solved.
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>> I have 4 GB of RAM, a Quad core processor 2.40GHz mounted on a 32-bit windows 7 (unfortunately I can't work on Linux)
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>> Could someone tell me how to change it to avoid having (if possible) that error??
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> Well, it is conceivable that at least 65 MBytes or so
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> is needed to write that KMZ file, if IDL is going to write a
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> color PNG file with an alpha channel (which is what I would
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> do). So, 3783*4318*4=65.4 MByte.
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> I think the problem is probably your 32-bit OS:
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> http://www.idlcoyote.com/fileio_tips/lgfiles.html
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> It is certainly *possible* that you don't need all those
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> pixels over there on Google Earth to see what it is you
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> hope to see. You might try running cgImage2KML and using
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> the Resize_Factor keyword to reduce the size of your image
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> before the alpha PNG file is created. It looks like your
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> image is a GeoTiff file, so something like this will
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> probably work:
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> cgImage2KML, GeoTiff=geoFilename, Resize_Factor=0.25
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> You can read more about it here:
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> http://www.idlcoyote.com/cg_tips/image2kml.php
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> Cheers,
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> David
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> --
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> David Fanning, Ph.D.
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> Fanning Software Consulting, Inc.
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> Coyote's Guide to IDL Programming: http://www.dfanning.com/
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> Sepore ma de ni thue. ("Perhaps thou speakest truth.")
many Thanks David,
It works perfectly!!
regards
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