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Re: Reading binary files made by Python [message #49278 is a reply to message #49277]

Mon, 10 July 2006 06:29

Maarten[1]
Messages: 176
Registered: November 2005

Senior Member

Sheldon wrote:

> I have created som binary files using python and tried to read them
> with IDL. I used the binary_template as well but IDL completely
> misinterprets the data and returns wrong values and values that were
> never written in the file. Now Matlab is able to read these files
> without problem. My question is why is IDL failing to do this? I know
> that the binaries are Float32 and the dimensions are correct. I am
> doing something wrong?

Without actually seeing the code you used to write the files, it seems
a bit hard to answer this question. One obvious issue is the endianess
of the data, I don't know what python, IDL or matlab assume about that
(I guess you use the same machine to write and read the data).

I would recommend to write out the data in a portable file format, like
HDF (pytables is an easy way to do that). You can then use the idl HDF
routines to ingest the data, avoiding the larger part of the headaches.

Maarten

pytables: http://www.pytables.org/

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[Message index]

		Re: Reading binary files made by Python By: Maarten[1] on Tue, 11 July 2006 00:14
		Re: Reading binary files made by Python By: Rick Towler on Mon, 10 July 2006 13:22
		Re: Reading binary files made by Python By: James Kuyper on Mon, 10 July 2006 11:51
		Re: Reading binary files made by Python By: Rick Towler on Mon, 10 July 2006 08:55
		Re: Reading binary files made by Python By: Liberum on Mon, 10 July 2006 06:41
		Re: Reading binary files made by Python By: Maarten[1] on Mon, 10 July 2006 06:29

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