Re: [Maxima-discuss] terminal=tikz?

[Eduardo O. <edu...@gm...>]

On Mon, 21 Nov 2022 at 02:09, Eduardo Ochs <edu...@gm...> wrote:
>
> On Sun, 20 Nov 2022 at 16:08, Michel Talon <ta...@lp...> wrote:
> >
> > By the way, here is the patch to add tikz to draw:
>
> Works perfectly!
> Thanks! =)
>   Eduardo

Hi Michel, Robert, and everybody else...

I have just tested adding a new gnuplot terminal called $pict2e, and
everything worked. Here are the details, for the sake of completeness.

I changed the functions update-terminal - defined in
share/draw/grcommon.lisp - and draw_gnuplot - defined in
share/draw/gnuplot.lisp - by following the same instructions that I
had used to add a terminal called $tikz, and then I ran

  make clean
  make
  make install

in the Maxima source tree. It would probably be better to just run
`M-x sly-eval-defun' on update-terminal and draw_gnuplot, but I tried
that and I stumbled on a problem that I will only have time to
investigate in the weekend =(... the method with "make clean; make;
make install" was a quick workaround.

After that I ran this in Maxima,

  F(x,y) := 2*x^2 - x*y - y^2;
  set_plot_option ([gnuplot_term,     "tikz"]);
  set_plot_option ([gnuplot_out_file, "/tmp/myplot.tikz"]);
  plot2d([contour, F(x, y)], [x, -2, 2], [y, -2, 2]);
  set_plot_option ([gnuplot_term,     "pict2e"]);
  set_plot_option ([gnuplot_out_file, "/tmp/myplot.pict2e"]);
  plot2d([contour, F(x, y)], [x, -2, 2], [y, -2, 2]);

and this in a shell:

cd /usr/share/texmf/tex/
cp -v gnuplot-lua-tikz-common.tex /tmp/
cp -v gnuplot-lua-tikz.sty        /tmp/

cd /tmp/

cat > myplot-tikz.tex <<'---'
  \documentclass{article}
  \usepackage{tikz}
  \usepackage{gnuplot-lua-tikz}
  \begin{document}
  \input myplot.tikz
  \end{document}
---

cat > myplot-pict2e.tex <<'---'
  \documentclass{article}
  \usepackage{pict2e}
  \usepackage{xcolor}
  \usepackage{graphicx}
  \begin{document}
  \input myplot.pict2e
  \end{document}
---

lualatex myplot-tikz.tex
lualatex myplot-pict2e.tex
xpdf myplot-tikz.pdf
xpdf myplot-pict2e.pdf

and everything worked. I took the lists of \usepackages from here:

  http://www.gnuplot.info/docs/latex_demo.pdf

Cheers,
  Eduardo Ochs
  http://angg.twu.net/eev-maxima.html