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Large TIFF file question [message #28834]

Tue, 15 January 2002 14:10

Neil Talsania
Messages: 7
Registered: January 2001

Junior Member

Hi,
I have what should be a simple question (I hope!). I am trying to run an
IDL routine that was given to me. The routine has run successfully on small
images, but when I try to run it on my 1.5 Gig image it fails on the memory
allocation.

Looking at the code, it does the following:

a = float(read_tiff(filename).

Now, I assume that means it is trying to read the entire thing into memory.
Ok I can see why that fails, although not really as I have >2G of RAM on my
system. But anyway, I then thought about using ASSOC which according to the
documention might help with this problem. However, that requires me to open
the file as a raw unformatted file (near as I can tell anyway).

So, to make a long story short, my question is how do I open a large TIFF
file, without exhausting memory?

Thanks
Neil

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[Message index]

		Large TIFF file question By: Neil Talsania on Tue, 15 January 2002 14:10
		Re: Large TIFF file question By: karl_schultz on Thu, 17 January 2002 12:18
		Re: Large TIFF file question By: Martin Downing on Thu, 17 January 2002 04:03
		Re: Large TIFF file question By: Dick Jackson on Wed, 16 January 2002 09:24

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