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Octave on Windows XP using Cygwin: plotting ?


From: John W. Eaton
Subject: Octave on Windows XP using Cygwin: plotting ?
Date: Sat, 11 Sep 2004 13:38:46 -0400

On 11-Sep-2004, Bart Vandewoestyne <address@hidden> wrote:

| I've followed the instructions on
| 
| http://wiki.octave.org/wiki.pl?OctaveForWindows (Technique 1)
| 
| to install Octave on Windows XP using Cygwin.  Still, it is not quite
| clear to me what is the proper way to set up the graphical output.
| 
| If I fire up my cygwin environment, then i get a bash shell.  Within
| that bash shell, i start up Octave, and apparently, it is version 2.1.49
| that is included in my freshly installed Cygwin distribution.
| 
| If i want to plot something, of course i don't get any output and my
| Octave complains about pgnuplot not being found.
| I *do* have gnuplot version 3.8j in my cygwin installation, and I also have
| X.  But what is the proper way to set up things so i have graphical output on
| Windows XP?  How do i make octave, gnuplot and X talk to each other so i
| get what i want, namely some nice data-plots :-)
| 
| The wiki is not so clear on this...

I think the problem is that in the time that has passed since I
created the Cygwin packages for Octave and gnuplot, a new package for
gnuplot appeared in the official set of Cygwin packages.  That version
is a native Cygwin build, which can't open plot windows directly in
Windows.  If you want to do that (and I think it is better than
running X just to get plotting to work) then you can do the following:

  * Download a binary of gnuplot for Windows from the gnuplot area on
    sourceforge (http://sourceforge.net/projects/gnuplot).  Click on
    the download button next to the 4.0.0 version of gnuplot.  Then
    download the file gp400win32.zip.

  * Unzip the gp400win32.zip file.

  * Copy the files

      pgnuplot.exe  wgnuplot.exe  wgnuplot.hlp  wgnuplot.mnu

    to /usr/local/bin in your Cygwin installation.

  * Test it by running Octave again and trying to make a plot.  For
    example, sombrero (41).

jwe




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