From help-octave-request at bevo dot che dot wisc dot edu Sat Oct 25 13:41:46 2003
Subject: Re: Writing binary files is not working properly
From: Doug Stewart <dastew at sympatico dot ca>
To: Geraint Paul Bevan <g dot bevan at mech dot gla dot ac dot uk>
CC: robert Macy <macy at california dot com>,    Help-Octave List <help-octave@bevo.che.wisc.edu>
Date: Sat, 25 Oct 2003 14:50:35 -0400



Geraint Paul Bevan wrote:
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> robert Macy wrote:
> 
> | In other words, fwrite(fid,sig,'ushort'); is adding a
> | "carriage return" everytime the data has "new line"
> |
> 
> Looks like your problem could be due to the way various operating
> systems mark the end of lines in text files
> 
> unix: linefeed
> max:  carriage return
> dos:  carriage return and linefeed
> 
> There are utilities available that can convert files from one form to
> the other: http://www.google.com/search?q=dos2unix

These will not work for a binary file.

There real problem is that when opening a file in "C", to write a wave 
file, on a windows machine,  you must open it in binary mode. You can 
write the data out in text mode or binary mode, but the text mode adds 
the extra LF for each CR.

So I haven't looked at the code in octave, but I do have my students 
write a wave file from "C" every year, so I have seen your problem every 
year.

Doug Stewart P.Eng.




> 
> - --
> Geraint Bevan
> http://homepage.ntlworld.com/geraint.bevan
> 
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> 
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Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
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