Many thanks for the quick fix Hans,

I have tried the lmtx inclusions as well, very nice indeed (and added it to
the wiki)!

Kind Regards,
Adam Reviczky

On Mon, Jul 13, 2020 at 10:38 PM Hans Hagen <j.hagen@xs4all.nl> wrote:

> 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
>
>
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>