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Old 04-18-2016, 02:42 PM   #1
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Maxima 5.23-Gnuplot-Linux

My environment is Ubuntu 14.04. I am pretty much at ease with Gnuplot but now I need to figure out how to draw Greek letters and the sign of Integral and a sign of summation. This website says it is possible with Maxima 5.23 plus Gnuplot. Does anybody know anything about it? Please share the experience. Thanks.
Old 05-14-2016, 07:26 AM   #2
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Originally Posted by AlexBB View Post
I need to figure out how to draw Greek letters and the sign of Integral and a sign of summation.
You don't need to use maxima necessarily, the example you reference is making use of the 'enhanced' mode of the gnuplot output terminal, which uses postscript codes.

For example, the following has a Greek title (tested on version 4.6). Note that some output terminal types may not have an enhanced mode.
  set term x11 enhanced
  plot sin(x) title "{/Symbol aqhna}"
If you do particularly want to use maxima, you may need to pass this option through explicitly (at least in the version 5.34 I tested).
  plot2d(sin(x), [x,-10,10], [title,"{/Symbol aqhna}"], [gnuplot_preamble,"set term x11 enhanced"])$
You can of course output to a postscript file directly. The following creates an eps file.
echo 'plot2d(sin(x), [x,-10,10], [title,"{/Symbol aqhna}"], [gnuplot_preamble,"set term eps enhanced"], [gnuplot_term, eps])$' | maxima
These postscript codes aren't the ideal way to format, but it might do you for simple integrals and summations:
{/Symbol \\362}@_{0}^{/Symbol \\245}
{/Symbol \\345}@_{0}^{n}
For anything more complicated, you might want to look at using latex output from gnuplot.

Last edited by neonsignal; 05-14-2016 at 07:34 AM.


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