mathmatrix and internal lines

Jean-Philippe Rey

26 Nov 2020 26 Nov '20

2:19 a.m.

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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blocmatrices-context.pdf (application/pdf — 6.7 KB)

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Otared Kavian

26 Nov 26 Nov

2:58 a.m.

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!

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 ___________________________________________________________________________________

Otared Kavian

5:40 a.m.

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 ___________________________________________________________________________________ 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 ___________________________________________________________________________________

Jean-Philippe Rey

11:46 a.m.

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 mailto:jean-philippe.rey@centralesupelec.fr 91192 Gif-sur-Yvette Cedex - France Empreinte PGP : 807A 5B2C 69E4 D4B5 783A 428A 1B5E E83E 261B BF51

Otared Kavian

12:43 p.m.

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

___________________________________________________________________________________ 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 ___________________________________________________________________________________

Hans Hagen

3:23 p.m.

On 11/26/2020 8:43 PM, Otared Kavian wrote:

...

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…).

The \noaligned permits a \protected definition. Otherwise one has to do something \def\VR{\noalign\bgroup

...

%%% 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}

given the \HR definition that should be \tolerant\protected\def\VR[#1]{\NC ...\NC}

...

\definemathmatrix[mymatrix] [left={\left(\,}, right={\, \right)}]

\starttext

\startformula \startmymatrix \NC A \VR B \NR \HR \NC C \VR D \NR \stopmymatrix \stopformula

\stoptext

Anyway, a feature like this should be in sync with other table mechanisms, so \definemathmatrix [mymatrix] [left={\left\lparent\thinspace}, right={\thinspace\right\rparent}] \starttext \startformula \startmymatrix \NC A \VL B \NR \HL \NC C \VL D \NR \stopmymatrix \stopformula \startformula \startmymatrix \NC A \VL[3,green] B \NR \HL[10,red] \NC C \VL D \NR \stopmymatrix \stopformula \stoptext A bit more code needed but the next upload will have it. Of course you have to wikify it. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

Otared Kavian

27 Nov 27 Nov

2:07 a.m.

Hi Hans, Thanks for your insight! Indeed I'll wikify what you explained, once I have tested it with the next upload. Would \HL and \VL be also available in mkiv ? Best regards: Otared

...

On 26 Nov 2020, at 23:23, Hans Hagen wrote:

On 11/26/2020 8:43 PM, Otared Kavian wrote:

...
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…).

The \noaligned permits a \protected definition. Otherwise one has to do something

\def\VR{\noalign\bgroup
that command then does the rule and ends the noalign. Also, that one cannot be \protected (a pitty in case one uses \expanded or so)

So ... a multistep approach. Plenty of that in mkiv.

...
%%% 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}

given the \HR definition that should be

\tolerant\protected\def\VR[#1]{\NC ...\NC}

...
\definemathmatrix[mymatrix] [left={\left(\,}, right={\, \right)}] \starttext \startformula \startmymatrix \NC A \VR B \NR \HR \NC C \VR D \NR \stopmymatrix \stopformula \stoptext

Anyway, a feature like this should be in sync with other table mechanisms, so

\definemathmatrix [mymatrix] [left={\left\lparent\thinspace}, right={\thinspace\right\rparent}]

\starttext

\startformula \startmymatrix \NC A \VL B \NR \HL \NC C \VL D \NR \stopmymatrix \stopformula

\startformula \startmymatrix \NC A \VL[3,green] B \NR \HL[10,red] \NC C \VL D \NR \stopmymatrix \stopformula

\stoptext

A bit more code needed but the next upload will have it. Of course you have to wikify it.

Hans

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

Hans Hagen

2:19 a.m.

On 11/27/2020 10:07 AM, Otared Kavian wrote:

...

Hi Hans,

Thanks for your insight! Indeed I'll wikify what you explained, once I have tested it with the next upload. Would \HL and \VL be also available in mkiv ? Dunno yet ... it's not that hard but I'm in lmtx mode now.

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

Otared Kavian

29 Nov 29 Nov

12:48 a.m.

...

On 26 Nov 2020, at 23:23, Hans Hagen wrote: […] A bit more code needed but the next upload will have it. Of course you have to wikify it.

Hans

Hi, I created a page on the wiki: https://wiki.contextgarden.net/Matrix_in_maths https://wiki.contextgarden.net/Matrix_in_maths However the LMTX code is not typeset on the wiki. I'll see with taco whether it is possible to have lmtx mode on the wiki. Best regards: Otared K.

Jean-Philippe Rey

11:59 a.m.

I added some details and examples to the wiki, however, as you said, they are not typeset correctly.

...

Le 29 nov. 2020 à 08:48, Otared Kavian a écrit :

...
On 26 Nov 2020, at 23:23, Hans Hagen mailto:j.hagen@xs4all.nl> wrote: […] A bit more code needed but the next upload will have it. Of course you have to wikify it.

Hans

Hi, I created a page on the wiki: https://wiki.contextgarden.net/Matrix_in_maths https://wiki.contextgarden.net/Matrix_in_maths However the LMTX code is not typeset on the wiki. I'll see with taco whether it is possible to have lmtx mode on the wiki.

Best regards: Otared K.

Otared Kavian

1:01 p.m.

Great! Well done. I'll ask Taco about LMTX on the wiki. Best regards: Otared

...

On 29 Nov 2020, at 19:59, Jean-Philippe Rey wrote:

I added some details and examples to the wiki, however, as you said, they are not typeset correctly.

...
Le 29 nov. 2020 à 08:48, Otared Kavian mailto:otared@gmail.com> a écrit :

...
On 26 Nov 2020, at 23:23, Hans Hagen mailto:j.hagen@xs4all.nl> wrote: […] A bit more code needed but the next upload will have it. Of course you have to wikify it.

Hans

Hi, I created a page on the wiki: https://wiki.contextgarden.net/Matrix_in_maths https://wiki.contextgarden.net/Matrix_in_maths However the LMTX code is not typeset on the wiki. I'll see with taco whether it is possible to have lmtx mode on the wiki.

Best regards: Otared K.

-- Jean-Philippe Rey jean-philippe.rey@centralesupelec.fr mailto: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!

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 ___________________________________________________________________________________

Taco Hoekwater

30 Nov 30 Nov

1:14 a.m.

...

On 29 Nov 2020, at 08:48, Otared Kavian wrote:

...
On 26 Nov 2020, at 23:23, Hans Hagen wrote: […] A bit more code needed but the next upload will have it. Of course you have to wikify it.

Hans

Hi, I created a page on the wiki: https://wiki.contextgarden.net/Matrix_in_maths However the LMTX code is not typeset on the wiki. I'll see with taco whether it is possible to have lmtx mode on the wiki.

I plan to update the lmtx on the wiki sometime between now and new years’ eve. Sorry, I can not be more precise right now. Best wishes, Taco

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Hans Hagen
Jean-Philippe Rey
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Taco Hoekwater

mathmatrix and internal lines

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