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Diffstat (limited to 'tex/context/base/mkiv/m-gnuplot.mkxl')
-rw-r--r-- | tex/context/base/mkiv/m-gnuplot.mkxl | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/m-gnuplot.mkxl b/tex/context/base/mkiv/m-gnuplot.mkxl new file mode 100644 index 000000000..2077b1741 --- /dev/null +++ b/tex/context/base/mkiv/m-gnuplot.mkxl @@ -0,0 +1,97 @@ +%D \module +%D [ file=m-gnuplot, +%D version=2020.02.10, +%D title=\CONTEXT\ Extra Modules, +%D subtitle=Gnuplot, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +%D This is a variant on the \GNUPLOT\ terminal code. At some point (when there is a +%D reason) I will make a proper environment that can be used for embedded code. + +\unexpanded\def\includegnuplotsvgfile[#1]% + {\hbox\bgroup + \ctxlua{metapost.startsvghashing()}% + \includesvgfile[#1]% + \ctxlua{metapost.stopsvghashing()}% + \egroup} + +\startluacode + +local modificationtime = lfs.modification +local longtostring = string.longtostring +local formatters = string.formatters +local expandfilename = dir.expandname +local isfile = lfs.isfile + +local runner = sandbox.registerrunner { + name = "gnuplot to svg", + program = "gnuplot", + template = longtostring [[ + -e "set output '%newname%'; set terminal svg" + "%oldname%" + ]], + checkers = { + oldname = "readable", + newname = "writable", + }, +} + +figures.programs.gnuplot = { + runner = runner, +} + +local function remap(specification) + local oldname = specification.fullname + if oldname then + local newname = file.replacesuffix(oldname,"svg") + local oldtime = modificationtime(oldname) or 0 + local newtime = modificationtime(newname) or 0 + if newtime == 0 or oldtime > newtime then + runner { + newname = expandfilename(newname), + oldname = expandfilename(oldname), + } + end + if isfile(newname) then + local only = file.nameonly(newname) + local name = formatters["svg-%s-inclusion"](only) + local code = formatters["\\includegnuplotsvgfile[%s]\\resetbuffer[%s]"](newname,name) + buffers.assign(name,code) + specification.format = "buffer" + specification.fullname = name + end + end + return specification +end + +figures.remappers.gp = { svg = remap } + +\stopluacode + +\continueifinputfile{m-gnuplot.mkxl} + +\startluacode +io.savedata("m-gnuplot-demo.gp", [[ +set format xy "$%g$" + +set title 'This is a plot of $y=\\sin(x)$' +set xlabel 'This is the $x$ axis' +set ylabel 'This is the $y$ axis' + +plot [0:6.28] [0:1] sin(x) +]]) +\stopluacode + +\starttext + + \externalfigure[m-gnuplot-demo.gp][conversion=svg,width=4cm] + + \externalfigure[m-gnuplot-demo.gp][conversion=svg,width=8cm] + +\stoptext |