octave-maintainers
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: gnuplot and dashed lines


From: Ben Abbott
Subject: Re: gnuplot and dashed lines
Date: Thu, 20 Dec 2012 10:55:18 -0500

On Dec 20, 2012, at 10:46 AM, CdeMills wrote:

> Hello,
> 
> I was struggling to obtain dashed lines without success. At first I believe
> it was MacOs specific; now I've found the problem.
> 
> If you take the content of
> http://gnuplot.sourceforge.net/demo/dashcolor.html
> and paste it into gnuplot interface, you get the same figure as given on the
> web page. If you download the script provided at
> http://gnuplot.sourceforge.net/demo/dashcolor.1.gnu which is supposed to
> give exactly the same result, you don't. 
> 
> There is a subtle difference: the script does not include the 'set
> termoption dashed' command at the beginning. This makes a lot of
> differences: by default, it seems that gnuplot renders all lines as solid.
> 
> To verify, it tried this simple script:
> x = 1:10;
> h=plot (x,x,'-;line 1;',x,x+1,'--;line 2;')
> 
> I got a figure with two continuous lines. Then I did
> drawnow("aqua", "/dev/null", false, "debug.gp")
> edited the debug.gp file, added a "set term option dashed" at the beginning,
> then, in a terminal:
> gnuplot < debug.gp
> 
> and got the dashed lines ! The missing point is thus to add this
> "termoption" at the beginning of the gnuplot script. Another option is to
> create a "~/.gnuplot" with this line:
> set termoption dashed
> 
> Restarted Octave, ran the same script, and got a dashed line directly!
> Dash-dot working too.
> 
> This should be either corrected into the gnuplot interface, either
> documented. Moreover, gnuplot seems to not have a way to query the
> termoption settings. I don't see how to interactively test wether or not
> this feature is supported.
> 
> Regards
> 
> Pascal

If you are intetested in making a changeset, the place for this change is in 
__gnuplot_drawnow__.m, or in __go_draw_figure__.m

Ben




reply via email to

[Prev in Thread] Current Thread [Next in Thread]