April 2018 - ntg-context - NTG Mailing Lists

Reference links with focus=standard option
by Lawrence Bell 11 Apr '18

11 Apr '18

Hi mailing list, I'm having some trouble with (interactive) references. I had a quick search of the mailing list and couldn't find any talk about this kind of issue, so I'm asking now. Hoping you could help me out. Consider the following example document. \setupinteraction [ state=start, % focus=standard, ] \starttext \startchapter[title=Some Title, reference=pt:ref] Lorem ipsum dolor sit amet, \periods \startplaceformula[reference=eq:ref] \startformula c^2 = a^2 + b^2. \stopformula \stopplaceformula Lorem ipsum dolor sit amet, \periods \startitemize[r] \startitem[it:ref] Lorem ipsum dolor sit amet, \periods \stopitem \stopitemize And now we can refer to formula~\in[eq:ref], chapter~\in[pt:ref], and item~\in[it:ref]. \page And now we can refer to formula~\in[eq:ref], chapter~\in[pt:ref], and item~\in[it:ref]. \stopchapter \stoptext All is well with the default setting for focus. I don't like that with most (?) PDF viewers the default setting changes the zoom level, so I usually turn on \setupinteraction[focus=standard] instead. But this seems to break (some of) the interactive links. The links to the the chapter and item still work, but the links to the formula are broken. As an experiment, I just tried this with a couple different viewers (Firefox, Evince, Okular, Xpdf, Qpdfview) and (putting \setupinteraction[focus=standard] back in) the link is indeed broken on all of them, /except/ for Qpdfview which still seems to understand it. What's going on here? Thanks in advance, Lawrence

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\ifcase changes default align in xtables
by Pablo Rodriguez 11 Apr '18

11 Apr '18

Dear list, I have the following sample: \setupxtable[mytable] [option={stretch, height}, align={\ifcase\currentxtablerow\fi}] \starttext \startxtable[mytable] \startxrow \startxcell 1 \stopxcell \startxcell 2 \stopxcell \stopxrow \startxrow \startxcell 3 \stopxcell \startxcell 4 \stopxcell \stopxrow \stopxtable \startxtable[option={stretch, height}] \startxrow \startxcell 1 \stopxcell \startxcell 2 \stopxcell \stopxrow \startxrow \startxcell 3 \stopxcell \startxcell 4 \stopxcell \stopxrow \stopxtable \stoptext For some strange reason, when using \ifcase in align, default is changed from {high, left} to {lohi, center}. Shouldn’t defaults be the same? BTW, if I set align to {\ifodd\currentxtablerow\fi}. I wonder whether this might be a bug. Many thanks for your help, Pablo -- http://www.ousia.tk

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conditional format in xtables
by Pablo Rodriguez 11 Apr '18

11 Apr '18

Dear list, thanks to Wolfgang, I learnt to set conditional format in xtables, such as in: \setupxtable [foregroundcolor={\ifnum\currentxtablecolumn=2 red\else green\fi}] \starttext \startxtable \startxrow \startxcell one \stopxcell \startxcell two \stopxcell \startxcell tree \stopxcell \startxcell four \stopxcell \stopxrow \stopxtable \stoptext My question is whether I can use ConTeXt conditionals instead of the ones from TeX. {\doifelse{\currentxtablecolumn}{2}{red}{green}} doesn’t work here. Many thanks for your help, Pablo -- http://www.ousia.tk

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Math kerning broken in latest beta
by Henri Menke 11 Apr '18

11 Apr '18

Dear list, The math kerning seems to be broken in recent versions of LuaTeX. When I process the MWE below with TeX Live 2017 (LuaTeX 1.0.4) I get a different result from the latest beta (LuaTeX 1.07.0). However, I could only observe this behaviour with some fonts, e.g. stixtwo or lucidaot. No difference was encountered for modern and xits. Cheers, Henri --- \setupbodyfont[stixtwo] % or lucidaot \startTEXpage $V_A$ \stopTEXpage

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xmlrefatt
by dr. Hans van der Meer 10 Apr '18

10 Apr '18

There is a slight restriction on \xmlrefatt that makes its use problematic, because it does not differentiate between an absent attribute and an attribute consisting of an empty string. The use for \xmlrefatt I had in mind was (a) do nothing if the attribute is absent, and (b) reset some value to its default value when the attribute is present but an empty string. Is it an option that its implementation is changed? A boolean return value will be fine, because false then can signify the attribute’s absence and true its presence. In the latter case it is safe to retrieve the attribute which then might be an empty string. Summarizing: the fact that \xmlrefatt tries to do two different things at the same time (signalling presence/absence) and returning an attribute, in a certain sense cripples its use. dr. Hans van der Meer

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how to change the colour of the footnote marker
by Robert Zydenbos 10 Apr '18

10 Apr '18

Today I wanted to print an entire document not in standard black, but in blue. I added (Mk II) – \setupcolors [state=start] \define\kleur{blue} % so I can change the colour uniformly everywhere through this variable \startcolor [\kleur] \setupnote[footnote][before={\color[\kleur]}] \setupfooter [color=\kleur] – and everything becomes blue, but NOT the footnote number before the footnote itself at the bottom of the page (the marker in the main text is coloured the way I want). Can anyone tell me how to change the colour of the footnote number in the note? Robert

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Text overflowing on a figure included in a float
by Fabrice Couvreur 09 Apr '18

09 Apr '18

Hello, Sorry if the example is not minimal but otherwise it would be difficult to explain the problem. The text overflows on the figure and I do not know how to correct this. Thank you Fabrice \usemodule[pgfplots] \pgfplotsset{compat=newest} \starttext \placefigure[right,none]{}{ \hbox{\framed{\switchtobodyfont[8pt] \starttikzpicture[/pgf/declare function={g(\x)=3*\x +7;},/pgf/declare function={f(\x)=-4*\x +1;},/pgf/declare function={h(\x)=2*\x -5;}] \startaxis[ restrict x to domain=-20:20, xmax=20, xmin=-20, restrict y to domain=-25:30, ymax=30, ymin=-25, x=0.1cm, y=0.1cm, axis x line = middle, axis y line = middle, axis line style = thick, major grid style=gray, minor grid style=gray, tickwidth=0.1cm, xtick align=outside, ytick align=outside, grid=both, xtick={-15,-10,...,15}, ytick={-20,-15,...,25}, xticklabels={\empty,\empty,\empty,\empty,5,\empty,\empty,\empty}, yticklabels={\empty,\empty,\empty,\empty,\empty,5,\empty,\empty,\empty,\empty,\empty,\empty}, extra x ticks={-20,20}, extra x tick label={\null}, extra y ticks={-25,30}, extra y tick label={\null}, extra tick style={tick style={draw=none}}, every tick/.style={ black, thick, }, y tick label style={ /pgf/number format/1000 sep={} }, xlabel=$x$,ylabel=$y$, every axis x label/.style={ at={(ticklabel* cs:1.01)}, anchor=west, }, every axis y label/.style={ at={(ticklabel* cs:1.01)}, anchor=south, }, samples=2000, >=stealth, ] \addplot [smooth,domain=-20:20,thick,darkblue] {f(x)} ; \addplot [smooth,domain=-20:20,thick,darkred] {g(x)} ; \addplot [smooth,domain=-20:20,thick,yellow] {h(x)} ; \draw[thick,darkgreen](5,-25)--(5,30) ; \node[below left=2pt] at (-0.1,-0.1,0) {\math{0}} ; \stopaxis \stoptikzpicture}}} \startitemize[n] \item On considère les droites \math{{\cal D}\,\colon x=5} et \math{{\cal D'}\,\colon y=3x+7}. \startitemize[a] \item Que vaut l'abscisse du point d'intersection de \math{{\cal D}} et \math{{\cal D'}} ? \item Calculer alors son ordonnée. \item Interpréter graphiquement le résultat sur le graphique. \stopitemize \item On considère les droites \math{\Delta \,\colon y=-4x+1} et \math{\Delta '\,\colon y=2x-5}. \startitemize[a] \item Résoudre l'équation \math{-4x+1=2x-5}. \item Donner une interprétation graphique de la solution obtenue. \item Donner les coordonnées du point d'intersection de \math{\Delta} et \math{\Delta '}. \item Interpréter graphiquement le résultat sur le graphique. \stopitemize \stopitemize \stoptext

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Macro to write the euro symbol
by Fabrice Couvreur 09 Apr '18

09 Apr '18

Hello, This macro does not work anymore and I do not understand why. Thank you \unexpanded\def\euros#1{#1\,\symbol[EUR]} \starttext \euros{100} \stoptext

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\blank shrinks when forced; why \blank[line,disable] and \blank[line]\blank[disable] are different?
by mf 08 Apr '18

08 Apr '18

Hello list, i'm trying to understand the \blank command. The following example leaves a blank line between the two lines of text. \showgrid \starttext A line.\par \blank[line] Another line.\par \stoptext When you add "force" to the blank, the vertical space between the two lines shrinks. You can also add "fixed", but nothing changes. \showgrid \starttext A line.\par \blank[line,force] Another line.\par \stoptext Wolfgang asked about this in 2015(https://www.mail-archive.com/ntg-cont ext(a)ntg.nl/msg77729.html) but i could not find any answer on the mailing list. The next doubt is about the "disable" option. In the following example, \blank[2*line] wins over \blank[line] because it's bigger, and you get a vertical space of 2 lines between the 2 lines of text. \showgrid \starttext A line.\par \blank[line]\blank[2*line] Another line.\par \stoptext Then add "disable" to the first blank to cancel the next one: \showgrid \starttext A line.\par \blank[line,disable]\blank[2*line] Another line.\par \stoptext I expected a vertical space of 1 line, instead there's none. Why? Conversely, this disables the second \blank, as you would expect: \showgrid \starttext A line.\par \blank[line]\blank[disable]\blank[2*line] Another line.\par \stoptext Best greetings, Massimiliano

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Fatal error with followtokens (metapost)
by Gerhard Kugler 07 Apr '18

07 Apr '18

Hi, the code: ----- \mainlanguage[de] \enableregime[utf-8] \useMPlibrary[txt] \starttext \setupbodyfont[big] \setupcolors[state=start] \setuplayout [topspace=192pt, backspace=48pt, cutspace=12pt, width=500pt, margin=0cm, rightedge=88pt, rightedgedistance=48pt, header=0cm, footer=0cm, height=400pt] \startuseMPgraphic{followtokens} path RotPath, q , cp; RotPath := halfcircle scaled 14cm rotated 180 ; \stopuseMPgraphic \followtokens{Voranbringen struktureller Politik-Veränderungen} \startuseMPgraphic{followtokens} path RotPath, q , cp; RotPath := quartercircle scaled 17cm rotated 220 ; \stopuseMPgraphic \followtokens{\ \ \ Präsenz in Medien\ } \stoptext ----- If change the content of the first followtokens the error disappears. Gerhard -- Gerhard Kugler Bensheim

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