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Re: reading portions of a large binary file [message #74271 is a reply to message #74270]

Sat, 08 January 2011 05:17

oxfordenergyservices is currently offline

oxfordenergyservices
Messages: 56
Registered: January 2009

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On Jan 8, 12:59 pm, geoff <oxfordenergyservi...@googlemail.com> wrote:
> Hi
>
> I have a large (4GB file) which is basically a large 2-D matrix of
> elevations. I want to read just some portion of this file
> (representing a lat/long box). I could read in the whole file line by
> line (because it is too big for RAM) and just take out the relevant
> bits, or preferably I want it to only read off the disc the relevant
> bits of the file. Is this possible in IDL? I vaguely remember this
> being possible in fortran but can't find it by googling.
>
> Thanks

if the answer I am looking for is read_binary, then I've found it!

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[Message index]

		Re: reading portions of a large binary file By: oxfordenergyservices on Sat, 08 January 2011 07:41
		Re: reading portions of a large binary file By: oxfordenergyservices on Sat, 08 January 2011 07:38
		Re: reading portions of a large binary file By: David Fanning on Sat, 08 January 2011 07:00
		Re: reading portions of a large binary file By: oxfordenergyservices on Sat, 08 January 2011 05:17

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