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cases
by David Arnold 26 Oct '04

26 Oct '04

All, Try: \documentclass[12pt]{article} \usepackage{amsmath} \begin{document} \begin{equation} \label{func} P_{r-j}= \begin{cases} 0, & \text{if $r-j$ is odd}\\ r!(-1)^{(r-j)/2}, & \text{if $r-j$ is even.} \end{cases} \end{equation} \end{document} Then try: \usemodule[amsl] \starttext \placeformula[func] \startformula P_{r-j}= \startcases 0, & \text{if $r-j$ is odd}\\ r!(-1)^{(r-j)/2}, & \text{if $r-j$ is even.} \stopcases \stopformula \stoptext You'll note that the spacing in the latter is not as good.

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align
by David Arnold 26 Oct '04

26 Oct '04

All, In ams math, the default behavior of align is to align each equation on the &. By default, each equation is numbered. Individual equations can be labeled and referenced. Try: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{align} F(x)&=\int_0^x f(t)\, dt\label{eq:1}\\ F'(x)&=f(x)\label{eq:2} \end{align} In equation~(\eqref{eq:1}) and equation~(\eqref{eq:2}), we see\ldots \end{document} To suppress number of equations, we use the align* environment. Try: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{align*} F(x)&=\int_0^x f(t)\, dt\\ F'(x)&=f(x) \end{align*} \end{document} When one wants to number an aligned environment as a group, we use aligned instead of align. This requires that we be in math mode. Try: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{equation}\label{fundthm} \begin{aligned} F(x)&=\int_0^x f(t)\, dt\\ F'(x)&=f(x) \end{aligned} \end{equation} \end{document} I can get this with amsl, with: \usemodule[amsl] \starttext \placeformula[fundthm] \startalign F(x)&=\int_0^x f(t)\, dt\\ F'(x)&=f(x) \stopalign We see in the \in{Fundamental Theorem}[fundthm] \ldots \stoptext I'm not sure how to label and reference individual equations in the align environment, however.

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AMS-like matrices
by David Arnold 26 Oct '04

26 Oct '04

All, Are there nath, newmat, amsl constructs that do the following: %matrix wrapped in parentheses () \begin{pmatrix} 1&2&3&4\\ 5&6&7&8 \end{pmatrix} %matrix wrapped in brackets [] \begin{bmatrix} 1&2&3&4\\ 5&6&7&8 \end{bmatrix} %matrix wrapped in curly braces {} \begin{Bmatrix} 1&2&3&4\\ 5&6&7&8 \end{Bmatrix} %matrix wrapped in absolute values || good for determinants \begin{vmatrix} 1&2&3&4\\ 5&6&7&8 \end{vmatrix} %matrix wrapped in || || good for magnitude of a vector \begin{Vmatrix} 1&2&3&4\\ 5&6&7&8 \end{Vmatrix}

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texexec 4.0 to 5.0 update.
by Dirar BOUGATEF 26 Oct '04

26 Oct '04

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named destinations with highlation
by shiva shankar shankar 26 Oct '04

26 Oct '04

Dear sir, suppose that i am having a target text and link to a target text in a pdf document(created either by using pdftex or by using a distiller) if i click the link it will take you to the target text. When you go to the target text if i want to highlate the text with some color temporarily( like when you use find ) what must be the postscript code or javascript code that i should embed in a tex file. shiva shankar.

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new release
by Adam Lindsay 26 Oct '04

26 Oct '04

Hi Hans. I just noticed this morning in your enco-uc (also appears in the new release) that the following is outside the start/stopencoding, and therefore causes some Bad Things (looking for UnicodeRegular20) if people use language settings: \stopencoding \definecharacter endash {\uchar{32}{19}} \definecharacter emdash {\uchar{32}{20}} \definecharacter quoteleft {\uchar{32}{24}} \definecharacter quoteright {\uchar{32}{25}} \definecharacter quotesinglebase {\uchar{32}{26}} \definecharacter quotedblleft {\uchar{32}{28}} \definecharacter quotedblright {\uchar{32}{29}} \definecharacter quotedblbase {\uchar{32}{30}} \definecharacter leftguillemot {\uchar0{171}} \definecharacter rightguillemot {\uchar0{187}} \definecharacter guilsingleleft {\uchar{32}{57}} \definecharacter guilsingleright {\uchar{32}{58}} %D a temporary guess: \startencoding[default] \definecommand Greekleftquot {\leftguillemot} \definecommand Greekrightquot {\rightguillemot} \stopencoding -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Adam T. Lindsay, Computing Dept. atl(a)comp.lancs.ac.uk Lancaster University, InfoLab21 +44(0)1524/510.514 Lancaster, LA1 4WA, UK Fax:+44(0)1524/510.492 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

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stretched text
by kopszak＠mnw.art.pl 26 Oct '04

26 Oct '04

Hello, I know it's a bad habit to use stretched text, but apparently formerly people thought differently. I am typesetting old quotations and would not want to replace stretched text simply by emphasized. Is it absolutely discouraged in ConTeXt or is there any way to have it... (in spite of its ugliness). Piotr -- Piotr Kopszak, Ph.D. Polish Art Gallery, National Museum in Warsaw -----------------------------> http://kopszak.mnw.art.pl/

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Re: [NTG-context] XeTeX no longer working
by Adam Lindsay 26 Oct '04

26 Oct '04

[copied to the list, cos it's informative...] Christopher Creutzig said this at Tue, 26 Oct 2004 12:46:17 +0200: >> The problem is with the changes that went into the ConTeXt distribution. >> Since you're running an up-to-date XeTeX, a temporary workaround is >> replacing the following: > > Thanks a lot. Unfortunately, I've run into the next problem: I can't >use Metapost if I'm using a font with spaces in its name: Whoa-ho-ho! Now you're getting fancy! :) I've already said the current specials are pretty broken with respect to image inclusion. Running MetaPost/MetaFun is one step beyond that, still. I'll treat it as a feature request, but it's getting a bit beyond my ken... >^^@:35: Extra tokens will be flushed. ><to be read again> > Hoefler >l.35 defaultfont:=""Hoefler > Text: Ligatures=Diphthongs""; > > >I don't try to have MP write any text itself, so I don't care for >defaultfont. Hans, is there an easy way to tell ConTeXt what to write >as defaultfont? From what I can see, I'd either need to patch >meta-ini.tex (uh-uh) or wade through \MPinitializations, which is likely >to be fragile as well. Yeah, I'm not familiar with how defaultfont even gets set, there. A minimal-but-complete test file (that would work with pdfetex, say) could be really helpful in terms of getting the feature going on my end... Cheers, adam >> >>>\resetspecials >>>\defineoutput [xetex] [xtx] >>>\setupoutput[xetex] >> >> >> ...with: >> \setupoutput[dvipdfmx] >> >> It's not entirely accurate, but XeTeX now supports 85% of the important >> dvipdfmx specials, so the next spec-xtx will inherit from dvipdfmx. >> >> best, >> adam >> >> Christopher Creutzig said this at Tue, 26 Oct 2004 09:55:41 +0200: >> >> >>>Salvete, >>> >>> since mail directly to Adam Lindsay does not seem to get through (I >>>never got a reply, even when asking if it had got through, so I'm >>>assuming it didn't), sorry to everyone not interested in XeTeX. >>> >>> After upgrading to tetex beta, XeTeX 0.88, and ConTeXt 2004.10.07, I'm >>>suddenly running into problems: >>> >>>\resetspecials >>>\defineoutput [xetex] [xtx] >>>\setupoutput[xetex] >>>\usetypescriptfile [type-xtx] >>>\definetypeface[Hoe][rm][serif][hoefler] [default][encoding=unicode] >>>\setupbodyfont [Hoe,rm]% >>>\setupcolor[state=start] >>> >>>\starttext >>>{\red test} >>>\stoptext >>> >>> >>> >>>! Undefined control sequence. >>>\dostartrgbcolormode ...tring {\colorhexcomponent >>> >>>{#1}\colorhexcomponent {#2... >>> >>>\doexeccolorrgb ...ode \@@cl@@r \@@cl@@g \@@cl@@b >>> \or \or \or \or \or >>>\dosta... >>> >>>\doexeccolorR ...!r \normalizeRGB \doexeccolorrgb >>> \else >>>\ifCMYKsupported \re... >>> >>>\@@crred ->0R:1:0:0: >>> 0:0 >>>\dowithcolor ... \??cr \currentpalet #2\endcsname >>> \od \else \ifcsname >>>\??cr ... >>> >>>\dodoglobalstartcolor ...m!colors 3\@@askedcolor } >>> \fi \fi >>>... >>>l.11 {\red >>> test} >>> >>> >>> Is there a newer version of XeTeX support available? (spec-xtx.tex >> >>>from context/base, which is used, unfortunately only lists >> >>>"version=2004.*.*".) >>> >>> I believe the problem is in >>> >>>\ifx\colorhexcomponent\undefined >>> >>> % this will be added to colo-hex.tex >>> >>>\else >>> >>> % because we intercept the zero condition, the .23pt in 1.23pt will >>>disappea >>>r in the >>> % ifcase zero part branch >>> >>> \def\colorhexcomponent#1% >>> {\ifdim#1\points<.005\points >>>... >>> >>> Why is there an empty first branch in the if? >>> >>>Regards, >>> Christopher Creutzig >>> >>>_______________________________________________ >>>ntg-context mailing list >>>ntg-context(a)ntg.nl >>>http://www.ntg.nl/mailman/listinfo/ntg-context >> >> -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Adam T. Lindsay, Computing Dept. atl(a)comp.lancs.ac.uk Lancaster University, InfoLab21 +44(0)1524/510.514 Lancaster, LA1 4WA, UK Fax:+44(0)1524/510.492 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

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more nath patches
by Christopher Creutzig 26 Oct '04

26 Oct '04

Salvete, I finally managed to make t-nath work with \eqalign and \eqalignno. (I assume I was not the only one having trouble there?) As it appears, nath gets really confused when subformulas are enclosed in {} and contain some form of delimiters. Therefore, the original definitions just don't work, but these modifications do, at least in some sense of “work”: \def\eqalignno#1% {\displ@y \tabskip\centering \vcenter{% \openup\jot\m@th \halign to \displaywidth {\hfil{\startnathdmath\@lign ##\stopnathdmath}\tabskip\z@skip &{\startnathdmath\@lign {}##\stopnathdmath}\hfil\tabskip\centering &\llap{$\@lign##$}\tabskip\z@skip\crcr #1\crcr}}} \def\eqalign#1% {\null \,% \vcenter {\openup \jot\m@th \ialign {\strut\hfil{\startnathdmath ##\stopnathdmath}&% {\startnathdmath {}##\stopnathdmath}\hfil\crcr #1\crcr}}% \,} And I've got another snippet I'd like to share, which helps displaying continued fractions in a linear format, using the “best” way of doing so I've met so far: \def\contfrac#1#2{% % To get the lines at the top right and bottom left % at the correct lengths, we need to know the final heights % of both top and bottom. Since styles ``C-up'' and ``C-down'' % are used only in generalized fractions, we need a trial % typesetting run for this. \begingroup \setbox\!!boxa\hbox{\trialtypesettingtrue\o@math\dcurrstyle@ {\setbox\nathbox\currstyle@hbox{%\vrule\!!depth .7\mex\!!width 0pt \botrestricted@false #1}% \!!dimena=\ht\nathbox \advance\!!dimena-\ht\sizebox@ \global\htdecrement@=\!!dimena % \!!dimena=\dp\nathbox \advance\!!dimena .5ex \dp\nathbox=\!!dimena \global\!!dimend=\dp\nathbox \box\nathbox \above\fracrulethickness@ \setbox\nathbox\currstyle@hbox{%\vrule\!!height 2\mex\!!width 0pt \toprestricted@false #2}% \!!dimenb=\dp\nathbox \advance\!!dimenb-\dp\sizebox@ \global\dpdecrement@=\!!dimenb % \!!dimenb=\ht\nathbox \advance\!!dimenb .5ex \ht\nathbox=\!!dimenb \global\!!dimene=\ht\nathbox \box\nathbox }% \o@math}% % % %% See the TeXbook, page 444 f., for what is happening here. \ifcase\mathcount@ \!!dimenf=\fontdimen8\textfont2 \!!dimeng=\fontdimen11\textfont2 \!!dimenh=3\fracrulethickness@ \!!dimeni=\fontdimen22\textfont2 \or \!!dimenf=\fontdimen9\scriptfont2 \!!dimeng=\fontdimen12\scriptfont2 \!!dimenh=\fracrulethickness@ \!!dimeni=\fontdimen22\scriptfont2 \else \!!dimenf=\fontdimen9\scriptscriptfont2 \!!dimeng=\fontdimen12\scriptscriptfont2 \!!dimenh=\fracrulethickness@ \!!dimeni=\fontdimen22\scriptscriptfont2 \fi % \!!dimenj=\dimexpr(\!!dimenf-\!!dimend)- (\!!dimeni+0.5\fracrulethickness@)\relax \ifdim\!!dimenj<\!!dimenh \advance\!!dimenf by \dimexpr(\!!dimenh-\!!dimenj)\relax \fi \!!dimenj=\dimexpr(\!!dimeni-0.5\fracrulethickness@)- (\!!dimene-\!!dimeng)\relax \ifdim\!!dimenj<\!!dimenh \advance\!!dimeng by \dimexpr(\!!dimenh-\!!dimenj)\relax \fi % \advance\!!dimenf by\dimexpr(-\!!dimeni)\relax \advance\!!dimeng by\dimexpr(+\!!dimeni)\relax % \setbox\!!boxa\hbox{% \o@math\dcurrstyle@ {\setbox\nathbox\currstyle@hbox{%\vrule\!!depth .7\mex\!!width 0pt \botrestricted@false #1}% \ifdim\ht\nathbox<1.6ex \ht\nathbox=1.6ex \fi \!!dimena=\ht\nathbox \advance\!!dimena-\ht\sizebox@ \global\htdecrement@=\!!dimena \setbox\!!boxb\hbox{% \vrule \!!depth\!!dimenf \!!height\ht\nathbox \!!width\fracrulethickness@ }% \dp\!!boxb=0pt \hfill\, \box\nathbox \,\hfill \hskip\fracrulethickness@\box\!!boxb \above\fracrulethickness@ \setbox\nathbox\currstyle@hbox{%\vrule\!!height 2\mex\!!width 0pt \toprestricted@false #2}% \ifdim\dp\nathbox<.4ex \dp\nathbox=.4ex \fi \!!dimenb=\dp\nathbox \advance\!!dimenb-\dp\sizebox@ \global\dpdecrement@=\!!dimenb \setbox\!!boxb\hbox{% \vrule \!!depth\dp\nathbox \!!height\!!dimeng \!!width\fracrulethickness@ }% \ht\!!boxb=0pt \box\!!boxb\hskip\fracrulethickness@ \hfill\, \box\nathbox \,\hfill }% \o@math}% \setbox\nathbox\copy\!!boxa \iftoprestricted@ \else \!!dimenb=\ht\nathbox \advance\!!dimenb .4\mex \ht\nathbox=\!!dimenb \fi \ifbotrestricted@ \else \!!dimenb=\dp\nathbox \advance\!!dimenb .5\mex \dp\nathbox=\!!dimenb \fi \box\nathbox % print \!!dimena=\ht\!!boxa \advance\!!dimena-\htdecrement@ \ht\!!boxa=\!!dimena \!!dimena=\dp\!!boxa \advance\!!dimena-\dpdecrement@ \dp\!!boxa=\!!dimena \global\setbox\sizebox@\copy\!!boxa \endgroup \resizebox@{\sizebox@}} I do assume the whole thing could be done with about half as many lines of code, but I was glad to finally understand how TeX typesets fractions and just ignored beautifying the code. Also note that the snippet uses \fracrulethickness@ from t-nath.tex, while I honestly consider using \fontdimen8\textfont3 or whichever font size is in use for the fraction. Well, work in progress. regards, Christopher Creutzig

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XeTeX no longer working
by Christopher Creutzig 26 Oct '04

26 Oct '04

Salvete, since mail directly to Adam Lindsay does not seem to get through (I never got a reply, even when asking if it had got through, so I'm assuming it didn't), sorry to everyone not interested in XeTeX. After upgrading to tetex beta, XeTeX 0.88, and ConTeXt 2004.10.07, I'm suddenly running into problems: \resetspecials \defineoutput [xetex] [xtx] \setupoutput[xetex] \usetypescriptfile [type-xtx] \definetypeface[Hoe][rm][serif][hoefler] [default][encoding=unicode] \setupbodyfont [Hoe,rm]% \setupcolor[state=start] \starttext {\red test} \stoptext ! Undefined control sequence. \dostartrgbcolormode ...tring {\colorhexcomponent {#1}\colorhexcomponent {#2... \doexeccolorrgb ...ode \@@cl@@r \@@cl@@g \@@cl@@b \or \or \or \or \or \dosta... \doexeccolorR ...!r \normalizeRGB \doexeccolorrgb \else \ifCMYKsupported \re... \@@crred ->0R:1:0:0: 0:0 \dowithcolor ... \??cr \currentpalet #2\endcsname \od \else \ifcsname \??cr ... \dodoglobalstartcolor ...m!colors 3\@@askedcolor } \fi \fi ... l.11 {\red test} Is there a newer version of XeTeX support available? (spec-xtx.tex from context/base, which is used, unfortunately only lists "version=2004.*.*".) I believe the problem is in \ifx\colorhexcomponent\undefined % this will be added to colo-hex.tex \else % because we intercept the zero condition, the .23pt in 1.23pt will disappea r in the % ifcase zero part branch \def\colorhexcomponent#1% {\ifdim#1\points<.005\points ... Why is there an empty first branch in the if? Regards, Christopher Creutzig

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