From help-request at octave dot org Thu Jan 12 02:38:52 2006
Subject: RE: Unwanted postscript & pdf plots
From: <Neil dot Francis at csiro dot au>
To: <help at octave dot org>
Date: Thu, 12 Jan 2006 16:37:03 +0800

Hello,

Setting automatic_replot = 0 fixed the problem.

When I added an extra

gset terminal dumb
gset output "/dev/null"

after each replot I found I was getting "postscript" files containing
ascii plots, preceding the postscript!

Now the behaviour makes sense to me!

Thanks Dimitri and Shai,
Neil

-----Original Message-----
From: Dmitri A. Sergatskov [mailto:dasergatskov at gmail dot com] 
Sent: Thursday, 12 January 2006 4:31 PM
To: Shai Ayal
Cc: Francis, Neil (Minerals, Waterford); help at octave dot org
Subject: Re: Unwanted postscript & pdf plots


I suspect that this is the infamous problem of
automatic_replot defaulting to 1 in octave-2.1.53
Set
automatic_replot=0
at the beginning of your script.

Sincerely,

Dmitri.

Shai Ayal wrote:
> I'm not sure it will work, but maybe you should try to add another
> 
> gset terminal dumb
> gset output "/dev/null"
> 
> just after the replot
> 
> Shai
> 
> Neil dot Francis at csiro dot au wrote:
> 
>> Hello,
>>
>> I'm using Octave 2.1.53, the fink binary version for OS X.
>>
>> I ssh to the machine that has Octave installed, so have only a 
>> text-based terminal emulator interface to it.
>>
>> When I want to create figures I would like Octave to write the 
>> figures to files.  I use code like:
>>
>> gset terminal dumb
>> gset output "/dev/null"
>>
>> semilogx (x, y, "r")
>> hold on
>> semilogx (x, z, "g")
>> hold off
>>
>> gset terminal postscript
>> gset output "output.ps"
>> replot
>> closeplot
>>
>>
>> But when I open up the resulting postscript files I find two 
>> identical figures (the figures are correct, with both y and z plotted

>> against x). I expected to see only one figure in the postscript file,

>> and this is what I get if I ask Octave to plot to a png file.
>>
>> Am I doing something wrong?  I get the same result if I use terminal 
>> type pdf.  I've heard that gnuplot postscript and Octave interact in 
>> unexpected ways, and that is why it is best to change terminal type 
>> to postscript and then replot only when the figure is finished - but 
>> that doesn't seem to help here.
>>
>> Thanks,
>> Neil
>>
>>
>>
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>>
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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
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
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