On 7/13/2020 8:53 PM, Adam Reviczky wrote:
Hi,

Using the minimal example from the contextgarden for gnuplot (https://wiki.contextgarden.net/Gnuplot) I am getting the following error message:

This is LuaTeX, Version 1.13.0 (TeX Live 2021/dev/Debian)
  system commands enabled.
open source     > level 1, order 1, name '/usr/share/texmf/tex/context/base/mkiv/cont-yes.mkiv'
system          >
system          > ConTeXt  ver: 2020.07.13 16:23 MKIV  fmt: 2020.7.13  int: english/english
system          >
system          > 'cont-new.mkiv' loaded
open source     > level 2, order 2, name '/usr/share/texmf/tex/context/base/mkiv/cont-new.mkiv'
system          > beware: some patches loaded from cont-new.mkiv
close source    > level 2, order 2, name '/usr/share/texmf/tex/context/base/mkiv/cont-new.mkiv'
system          > files > jobname 'mwe', input './mwe', result 'mwe'
fonts           > latin modern fonts are not preloaded
languages       > language 'en' is active
open source     > level 2, order 3, name '/tmp/4/mwe.tex'
modules         > 'gnuplot' is loaded
open source     > level 3, order 4, name '/usr/share/texmf/tex/context/third/gnuplot/t-gnuplot.mkiv'
loading         > Gnuplot module
open source     > level 4, order 5, name '/usr/share/texmf/tex/context/fonts/mkiv/type-imp-texgyre.mkiv' close source    > level 4, order 5, name '/usr/share/texmf/tex/context/fonts/mkiv/type-imp-texgyre.mkiv' close source    > level 3, order 5, name '/usr/share/texmf/tex/context/third/gnuplot/t-gnuplot.mkiv'

lua error       > lua error on line 4 in file /tmp/4/mwe.tex:

/usr/share/texmf/tex/context/base/mkiv/buff-ini.lua:439: attempt to call a nil value (upvalue 'gettoken')
stack traceback:
/usr/share/texmf/tex/context/base/mkiv/buff-ini.lua:439: in upvalue 'pickup'
/usr/share/texmf/tex/context/base/mkiv/buff-ini.lua:635: in function </usr/share/texmf/tex/context/base/mkiv/buff-ini.lua:626>
(...tail calls...)

  1     \usemodule[gnuplot]
  2
  3     % write a script for gnuplot
  4 >>  \startGNUPLOTscript[sin]
  5        plot sin(x)
  6     \stopGNUPLOTscript
  7
  8     % include the resulting graphic into the document
  9     \useGNUPLOTgraphic[sin]
10

mtx-context     | fatal error: return code: 256

Does the gnuplot module need adjustments?
No, i messed up something ... will be fixed tomorrow

Do you have lmtx installed? It has nicer gnuplot support:

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)
------------------------------------------------

Can be included with:

\starttext

    \externalfigure[m-gnuplot-demo.gp][conversion=svg,width=4cm]

    \externalfigure[m-gnuplot-demo.gp][conversion=svg,width=8cm]

\stoptext


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