Re: [NTG-context] mathmatrix and internal lines

Hi Jean-Philippe, For a simple case like the one you sent, a rather not optimal solution can be this: \definemathmatrix[mymatrix] [left={\left(\,}, right={\ \right)}] \starttext \startformula \startmymatrix \NC A \hskip .5em |\hskip-.5em \NC B \NR \noalign{\hrule} \NC C \hskip .5em |\hskip-.5em \NC D \NR \stopmymatrix \stopformula \stoptext However I think I have seen sometime ago a more elegant solution, but I could not find it right now… Best regards: Otared K.

On 26 Nov 2020, at 10:19, Jean-Philippe Rey wrote:

Dear list,

I would like to draw matrices with internal lines as can be done with LaTeX (cf pdf output) :

======================== \documentclass{article} \begin{document} $M =\left( \begin{array}{c|c} A & B \\ \hline C & D \\ \end{array} \right)$ \end{document} ========================

I didn't find out how to use mathmatrix to achieve this. My best result to date is

======================== \starttext $M = \left( \bTABLE[frame=off] \bTR \bTD[rightframe=on, bottomframe=on] $A$ \eTD \bTD[bottomframe=on] $B$ \eTD \eTR\bTR \bTD[rightframe=on] $C$ \eTD \bTD $D$ \eTD \eTR \eTABLE \right)$ \stoptext ========================

The code is rather ugly, and I get a spurious space at the bottom of the table.

Any hints?

Thank you,

-- Jean-Philippe Rey jean-philippe.rey@centralesupelec.fr 91192 Gif-sur-Yvette Cedex - France Empreinte PGP : 807A 5B2C 69E4 D4B5 783A 428A 1B5E E83E 261B BF51 ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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