Hi Henri,
Sorry !

\usemodule[pgfplots]
\pgfplotsset{compat=newest}
\starttext
\starttikzpicture
  \startaxis
    [
      xlabel=$x$,
 ylabel={$f(x) = x^2 - x +4$}
    ]
    \addplot {x^2 - x +4};
  \stopaxis
\stoptikzpicture
\stoptext


tex error       > tex error on line 5 in file pgfplotsbinary.data.code.tex: ! Undefined control sequence

l.5 ...ode`\^0=11    \expandafter\xdef\csname pgfp@bin@\the\counter \endcsname{^0
                                                                                }\advance\counter by1
lua error:

?


Le mer. 8 avr. 2020 à 12:40, Henri Menke <henrimenke@gmail.com> a écrit :
MINIMAL working example...

Cheers, Henri

On 08/04/20, 11:52, Fabrice Couvreur wrote:
> Hi Henri,
> This file works well with context but does not work with lmtx.
>
> \usemodule[pgfplots]
> \usemodule[pgfpltstable]
> \pgfplotsset{compat=newest}
> \starttext
> \starttikzpicture
> \startaxis[
>     title={\bf Relevé de notes chronologique},
>     ymajorgrids=true,
>     grid style={cyan!30},
>     ymin=0,
>     ymax=22,
>     xmin=0,
>     xmax=14,
>     x=1cm,
>     y=0.3cm,
>     axis x line =bottom,
>     axis y line =left,
>     axis on top=true,
>     axis line style =very thick,
>     tick align=outside,
>     tickwidth=0.12cm,
>     tick style=very thick,
>     xtick={\empty},
>     ytick={0,2,...,18,20},
>     extra x ticks={2,5,7,9,11,13},
>     extra x tick labels={octobre,novembre,janvier,mars,avril, juin},
>     extra x tick style={tick label style={rotate=45}},
>     extra tick style={tick style={draw=none}},
>     xlabel={Date},ylabel={Note},
>     xlabel={Date},ylabel={Effectif},
>  every axis x label/.style={
>  at={(ticklabel* cs:1.01)},
>  anchor=west,
>  },
>  every axis y label/.style={
>  at={(ticklabel* cs:1.01)},
>  anchor=south,
>  },
>  samples=1000,
>  >=stealth,
> ]
> \addplot [color=green,only marks] coordinates {
>   (1,5)
>   (2,7)
>   (3,5)
>   (4,10)
>   (5,5)
>   (6,8)
>   (7,10)
>   (8,8)
>   (9,10)
>   (10,14)
>   (11,18)
>   (12,14)
>   (13,11)
> };
> \stopaxis
> \stoptikzpicture
> \stoptext
>
>
> open source     > level 7, order 88, name 'pgfplotsbinary.data.code.tex'
>
> tex error       > tex error on line 5 in file pgfplotsbinary.data.code.tex:
> ! Undefined control sequence
>
> l.5 ...ode`\^0=11    \expandafter\xdef\csname pgfp@bin@\the\counter
> \endcsname{^0
>
>     }\advance\counter by1
> lua error:
>
> ?
>
>
>
> <empty file>
>
>
> The control sequence at the end of the top line of your error message was
> never
> \def'ed. You can just continue as I'll forget about whatever was undefined.
>
>
> mtx-context     | fatal error: return code: 256
>
> TeX Output exited abnormally with code 1 at Wed Apr  8 11:49:56
>
>
> Le mer. 8 avr. 2020 à 11:21, Henri Menke <henrimenke@gmail.com> a écrit :
>
> > Hi Fabrice,
> >
> > Could you provide a MWE, or maybe even open an issue on the bugtracker?
> > https://github.com/pgf-tikz/pgfplots/issues
> >
> > Cheers, Henri
> >
> > On 07/04/20, 14:22, Fabrice Couvreur wrote:
> > > Hi Henri,
> > > Thank you for answering me. We're entering an area that I don't really
> > know. I
> > > replaced all ^^ by ^ but I'm not sure I understood. I now have the
> > > following message :
> > > Thank you
> > > Fabrice
> > >
> > > tex error       > tex error on line 5 in file
> > pgfplotsbinary.data.code.tex:
> > > ! Undefined control sequence
> > >
> > > l.5 \catcode`\^00=11 \expandafter\xdef\csname pgfp@bin@\the\counter
> > > \endcsname{^0
> > >
> > >    0}\advance\counter by1
> > > lua error:
> > >
> > > ?
> > >
> > >
> > >
> > > <empty file>
> > >
> > >
> > > The control sequence at the end of the top line of your error message was
> > > never
> > > \def'ed. You can just continue as I'll forget about whatever was
> > undefined.
> > >
> > >
> > > mtx-context     | fatal error: return code: 256
> > >
> > > TeX Output exited abnormally with code 1 at Tue Apr  7 14:15:58
> > >
> > > Le mar. 7 avr. 2020 à 04:21, Henri Menke <henrimenke@gmail.com> a écrit
> > :
> > >
> > > > The problem is that pgfplots uses the ^^ syntax to access characters
> > but
> > > > this relies on ^ having catcode 7 which is not the case by default in
> > > > ConTeXt.  I had a similar issue in PGF before and that was fixed by
> > just
> > > > replacing the ^^ syntax with the ascii code constants from
> > > > syst-ini.mkxl.
> > > >
> > > > Cheers, Henri
> > > >
> > > > On 06/04/20, 22:23, Fabrice Couvreur wrote:
> > > > > Hi,
> > > > > Still with the idea of using lmtx, I get a compilation error when I
> > use
> > > > > pgfplots.
> > > > > Thank you.
> > > > > Fabrice
> > > > > ####################################################
> > > > > open source     > level 9, order 92, name
> > 'pgfplotsbinary.data.code.tex'
> > > > >
> > > > > tex error       > tex error on line 42 in file
> > > > > pgfplotsbinary.data.code.tex: ! Undefined control sequence
> > > > >
> > > > > l.42 \catcode`\ =11^^I\expandafter\xdef\csname pgfp@bin@
> > > > >
> > > > > \the\counter^^I\endcsname{^^20}\endgroup\advance\counter by1
> > > > > lua error:
> > > > >
> > > > > ?
> > > > >
> > > > >
> > > > >
> > > > > <empty file>
> > > > >
> > > > >
> > > > > The control sequence at the end of the top line of your error
> > message was
> > > > > never
> > > > > \def'ed. You can just continue as I'll forget about whatever was
> > > > undefined.
> > > > >
> > > > >
> > > > > mtx-context     | fatal error: return code: 256
> > > > >
> > > > > TeX Output exited abnormally with code 1 at Mon Apr  6 22:19:01
> > > >
> > > > >
> > > >
> > ___________________________________________________________________________________
> > > > > If your question is of interest to others as well, please add an
> > entry
> > > > to the Wiki!
> > > > >
> > > > > maillist : ntg-context@ntg.nl /
> > > > http://www.ntg.nl/mailman/listinfo/ntg-context
> > > > > webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> > > > > archive  : https://bitbucket.org/phg/context-mirror/commits/
> > > > > wiki     : http://contextgarden.net
> > > > >
> > > >
> > ___________________________________________________________________________________
> > > >
> > > >
> > > >
> > ___________________________________________________________________________________
> > > > If your question is of interest to others as well, please add an entry
> > to
> > > > the Wiki!
> > > >
> > > > maillist : ntg-context@ntg.nl /
> > > > http://www.ntg.nl/mailman/listinfo/ntg-context
> > > > webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> > > > archive  : https://bitbucket.org/phg/context-mirror/commits/
> > > > wiki     : http://contextgarden.net
> > > >
> > > >
> > ___________________________________________________________________________________
> > > >
> >
> > >
> > ___________________________________________________________________________________
> > > If your question is of interest to others as well, please add an entry
> > to the Wiki!
> > >
> > > maillist : ntg-context@ntg.nl /
> > http://www.ntg.nl/mailman/listinfo/ntg-context
> > > webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> > > archive  : https://bitbucket.org/phg/context-mirror/commits/
> > > wiki     : http://contextgarden.net
> > >
> > ___________________________________________________________________________________
> >
> >
> > ___________________________________________________________________________________
> > If your question is of interest to others as well, please add an entry to
> > the Wiki!
> >
> > maillist : ntg-context@ntg.nl /
> > http://www.ntg.nl/mailman/listinfo/ntg-context
> > webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> > archive  : https://bitbucket.org/phg/context-mirror/commits/
> > wiki     : http://contextgarden.net
> >
> > ___________________________________________________________________________________
> >

> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________