On 7/21/2016 11:50 AM, Fabrice Couvreur wrote:
Hi Hans,
If I do this, the problem remains the same.

\starttikzpicture
  \vbox{\matrix [matrix of math nodes,ampersand replacement=\&]
  {
    a_8 \& a_1 \& a_6         \\
    a_3 \& a_5 \& |[red]| a_7 \\
    a_4 \& a_9 \&     a_2     \\
  };}
\stoptikzpicture

I'm not sure why you want to use tikz for matrices but this works

\starttikzpicture
  \matrix [matrix of math nodes,ampersand replacement=\&]
  {
    a_8 \& a_1 \& a_6         \\
    a_3 \& a_5 \& {\red a_7} \\
    a_4 \& a_9 \& a_2     \\
  };
\stoptikzpicture

(forget about | there)

Hans

2016-07-21 11:38 GMT+02:00 Hans Hagen <pra...@wxs.nl
<mailto:pra...@wxs.nl>>:

    On 7/21/2016 11:25 AM, Fabrice Couvreur wrote:

        Hello,
        Everything is in the title, as this example shows.


    normally it means that you need to wrap in a \vbox{...}

        Thanks,
        Fabrice


        ####################################################################
        \usemodule[tikz]
        \usetikzlibrary[matrix]

        \setupbodyfont[pagella,11pt]

        \starttext

        \starttikzpicture
          \matrix [matrix of math nodes,ampersand replacement=\&]
          {
            a_8 \& a_1 \& a_6         \\
            a_3 \& a_5 \& |[red]| a_7 \\
            a_4 \& a_9 \&     a_2     \\
          };
        \stoptikzpicture

        \stoptext

        ####################################################################
        tex error       > tex error on line 14 in file
        /home/fab/ntg49.tex: !
        Argument of \tikz@lib@matrix@with@options has an extra }

        <inserted text>
        \par
        <to be read again>
        }
        l.14   }
              ;

         4     \setupbodyfont[pagella,11pt]
         5
         6     \starttext
         7
         8     \starttikzpicture
         9       \matrix [matrix of math nodes,ampersand replacement=\&]
        10       {
        11         a_8 \& a_1 \& a_6         \\
        12         a_3 \& a_5 \& |[red]| a_7 \\
        13         a_4 \& a_9 \&     a_2     \\
        14 >>    };
        15     \stoptikzpicture
        16
        17     \stoptext




        
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                                              Hans Hagen | PRAGMA ADE
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___________________________________________________________________________________




___________________________________________________________________________________
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://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________



--

-----------------------------------------------------------------
                                          Hans Hagen | PRAGMA ADE
              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
       tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

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