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Re: Reading part of a netcdf file? [message #86019 is a reply to message #86018]

Tue, 24 September 2013 09:31

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

rjp23@le.ac.uk writes:

> Do you mean in reference to copying part of the file into another file or for just reading part of the file?
>
> It looks like both might be possible once I get my head around your code...?

Well, I have to confess, I've never looked at a 22.5 GByte netCDF file
before, but I suspect both are possible.

It *is* possible to read just a portion of a large data set from a
netCDF file. See the GetVarData method in the NDCF_File object. See the
COUNT, OFFSET, and STRIDE keywords. I can't advise sensibly without
knowing more about the data, but I think it is possible to do what you
want to do. You certainly don't want to read that data file all at once
into the variable "a". ;-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Reading part of a netcdf file? By: rjp23 on Tue, 24 September 2013 08:26
		Re: Reading part of a netcdf file? By: David Fanning on Tue, 24 September 2013 09:06
		Re: Reading part of a netcdf file? By: rjp23 on Tue, 24 September 2013 09:11
		Re: Reading part of a netcdf file? By: David Fanning on Tue, 24 September 2013 09:31
		Re: Reading part of a netcdf file? By: David Fanning on Tue, 24 September 2013 09:40
		Re: Reading part of a netcdf file? By: Paul Van Delst[1] on Tue, 24 September 2013 09:46
		Re: Reading part of a netcdf file? By: Michael Galloy on Tue, 24 September 2013 13:01

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