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gnuplot and dashed lines
From: |
CdeMills |
Subject: |
gnuplot and dashed lines |
Date: |
Thu, 20 Dec 2012 07:46:41 -0800 (PST) |
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
--
View this message in context:
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- gnuplot and dashed lines,
CdeMills <=
- Re: gnuplot and dashed lines, Ben Abbott, 2012/12/20
- Re: gnuplot and dashed lines, Ben Abbott, 2012/12/20
- Re: gnuplot and dashed lines, Daniel J Sebald, 2012/12/20
- Re: gnuplot and dashed lines, Ben Abbott, 2012/12/20
- Re: gnuplot and dashed lines, Daniel J Sebald, 2012/12/20
- Re: gnuplot and dashed lines, Daniel J Sebald, 2012/12/21
- Re: gnuplot and dashed lines, Daniel J Sebald, 2012/12/21
- Re: gnuplot and dashed lines, Daniel J Sebald, 2012/12/21
- Re: gnuplot and dashed lines, Ben Abbott, 2012/12/21
- Re: gnuplot and dashed lines, Ben Abbott, 2012/12/21