Re: preventing an empty last line in text files produced by dlmwrite

[Avraham Rosenberg]

On Sun, May 13, 2007 at 05:06:33PM +0200, Shelley Brown wrote:
> Hi,
> 
> I am trying to create a text file based on experimental data. 
> 
> The text file must not have any header lines or an empty line at the end of 
> the file.
> 
> The following code prevents any header lines, but I still have an empty line 
> at the end of the file which I need to suppress.
> 
> dlmwrite('C:/data.dat',data,' ',0,0,'newline','unix')
> 
> I would appreciate it if anyone has any suggestions about how to overcome the 
> problem.
> 
> /Shelley
> 
>  
> 

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Hi,
Judging by your 'C:/data.dat', I guess that your operating system
is MS-Windows and that you have installed cygwin, before/in order to
installing octave.
If this is so, you most probably have the utility "grep" (if not,
you can download it from the cygwin site). You can use it to filter 
out the empty lines, using the command:
grep -v ^$ <data.dat >data1.dat
in the directory in which you created data.dat
Translated in plain English: grep=select, -v=invert selection,
^$=line containing nothing between beginning and end (empty
line), <data.dat=from the file data.dat, >data1.dat=to the file
data1.dat
Good luck, Avraham
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