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Hi Jean-Philippe, A few weeks ago I saw briefly the discussion about Hans' message regarding \noalign and the the new definitions of \HR and \VR that you are sending. Indeed your solution works great ! Just for the case other people may have the same question about writing block matrix, I copy below the whole example which can be found later in the mail archive. (For mkiv, I don't know how to do the same thing…). %%% begin block-matrix.tex % in LMTX defining \HR and \VR to create block matrices: \pushoverloadmode \noaligned\tolerant\protected\def\HR[#1]{\noalign{\hrule #1}} \popoverloadmode \def\VR{\dosingleempty\doVR} \def\doVR[#1]{\NC \hskip-0.5em \vrule #1 \hskip-0.5em \NC} \definemathmatrix[mymatrix] [left={\left(\,}, right={\, \right)}] \starttext \startformula \startmymatrix \NC A \VR B \NR \HR \NC C \VR D \NR \stopmymatrix \stopformula \stoptext %%% end block-matrix.tex Best regards: Otared K.
On 26 Nov 2020, at 19:46, Jean-Philippe Rey
wrote: Hi Otared,
Thank you very much.
I used your example to write the following macros. They are far from perfect but suit my needs. A few days ago, Hans warned not to use \noalign in LMTX, so I used the trick he gave to the list even if I don't really understand it.
=== LMTX version ============ %D \macros{HR, VR} %D \type{\HR} draws a horizontal rule between two rows of a matrix %D \type{\VR} is used in place of \type{\NC} to draw a vertical rule between two columns of a matrix %D each macro takes an optional parameter giving the rule dimensions %D Example %D \type{\startmatrix \NC A \VR[depth 2mm] B \NR \HR[height 0.6pt] \NC C \VR D \NR \stopmatrix}
\pushoverloadmode \noaligned\tolerant\protected\def\HR[#1]{\noalign{\hrule #1}} \popoverloadmode
\def\VR{\dosingleempty\doVR} \def\doVR[#1]{\NC \hskip-0.5em \vrule #1 \hskip-0.5em \NC} ===========================
=== MkIV version ============ %D \macros{HR, VR} %D \type{\HR} draws a horizontal rule between two rows of a matrix %D \type{\VR} is used in place of \type{\NC} to draw a vertical rule between two columns of a matrix %D it takes an optional parameter giving the rule dimensions %D Example %D \type{\startmatrix \NC A \VR[depth 2mm] B \NR \HR \NC C \VR D \NR \stopmatrix}
\def\HR{\noalign{\hrule}}
\def\VR{\dosingleempty\doVR} \def\doVR[#1]{\NC \hskip-0.5em \vrule #1 \hskip-0.5em \NC} ===========================
For the MkIV version I haven't been able to add an optional parameter to \HR the code
\def\HR{\dosingleempty\doHR} \def\doHR[#1]{\noalign{\hrule #1}}
complains about "Misplaced \noalign"
Best regards,
Le 26 nov. 2020 à 13:40, Otared Kavian
a écrit : Hi Jean-Philippe,
The following is better than the one I sent earlier:
\definemathmatrix[mymatrix] [left={\left(\,}, right={\ \right)}]
\starttext \startformula \startmymatrix \NC A \NC\hskip-.5em \vrule \NC\hskip-.5em B \NR \noalign{\hrule} \NC C \NC \hskip-.5em\vrule \NC \hskip-.5em D \NR \stopmymatrix \stopformula \stoptext
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
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