Taco Hoekwater wrote: > Does this look ok? > (code is not production-ready yet, but seems reasonable to me) > > Taco > > \def\startsubstack > {\begingroup > \null > \vcenter\bgroup > \pushmacro\domatrixNC > \let\endmath\relax > \def\NC{\domatrixNC}% > \def\MC{\domatrixNC\ifmmode\else$\def\endmath{$}\fi}% > \global\let\domatrixNC\dodomatrixNC > \def\NR{\endmath% > \global\let\domatrixNC\dodomatrixNC > \vadjust{\kern -.33\bodyfontsize}\crcr}% > \mathsurround\zeropoint > \everycr\emptytoks > \halign\bgroup \hfil$\scriptstyle ##$\hfil\crcr } > > \def\stopsubstack > {\crcr > \egroup > \popmacro\domatrixNC > \egroup > \endgroup} > without vadjust: (mathstrut + nointerlineskip)
\def\startsubstack {\begingroup \null \vcenter\bgroup \pushmacro\domatrixNC \let\stopmathmode\relax % to be sure, will go away \def\NC{\domatrixNC}% \def\MC{\domatrixNC\startmathmode}% \global\let\domatrixNC\dodomatrixNC \def\NR{\stopmathmode \global\let\domatrixNC\dodomatrixNC \crcr\noalign{\nointerlineskip}}% \mathsurround\zeropoint \everycr\emptytoks \halign\bgroup\hfil$\scriptstyle\mathstrut##$\hfil\crcr } \def\stopsubstack {\crcr \egroup \popmacro\domatrixNC \egroup \endgroup} > \starttext > > \startformula > \sum_{% > \startsubstack > i = 1 \NR > i \neq n \NR > i \neq m > \stopsubstack > }a_i > \stopformula > > \stoptext > > Aditya Mahajan wrote: > >> <--- On Jan 28, Taco Hoekwater wrote ---> >> >> >>> Aditya Mahajan wrote: >>> >>> >>>>> The definition from m-newmat is at least partly superceded by the >>>>> new core math definitions Hans added last week, so a new implementation >>>>> would be better. >>>>> >>>> Can you suggest something? >>>> >>> Like this maybe? >>> >>> \def\substack#1% >>> {\begingroup >>> \let\\\cr >>> \startmathmatrix #1\stopmathmatrix >>> \endgroup} >>> >>> Probably needs a bit of tweaking to make it look better >>> (perhaps a [strut=no] parameter?). >>> >>> >> <--- On Jan 28, Vit Zyka wrote ---> >> >> >>> What about use math primitive \atop: >>> >>> \def\substack#1% >>> {\begingroup >>> \let\\\atop >>> #1 >>> \endgroup} >>> >>> >> >> Sorry for not getting back for almost a month. Both suggestions work >> only partially. Consider >> >> \startmathformula >> \sum_{% >> \startmathmatrix >> i = 1 \NR i \neq n \NR i \neq m >> \stopmathmatrix >> }a_i >> \stopformula >> >> As Taco mentioned, the spacing is bad. >> >> \atop gives correct spacing but you need to put subscripts in groups >> of two. >> >> \startformula >> \sum_{ {i = 1 \atop i \neq n}\atop i \neq m } a_i >> \stopformula >> >> Moreover, the font size is incorrect in both cases. Compare with the >> size of the subscript in \sum_{i = 1}. >> >> Any suggestions? >> >> Aditya >> _______________________________________________ >> ntg-context mailing list >> ntg-context@ntg.nl >> http://www.ntg.nl/mailman/listinfo/ntg-context >> > _______________________________________________ > ntg-context mailing list > ntg-context@ntg.nl > http://www.ntg.nl/mailman/listinfo/ntg-context > -- ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- _______________________________________________ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context