February 2017 - ntg-context - NTG Mailing Lists

Unicode text conversion
by Procházka Lukáš Ing. 16 Jun '17

16 Jun '17

Hello, does ConTeXt contain a built-in Lua conversion routine to convert text in UTF-16 (and others) to UTF-8 string? Something like: ---- \startluacode local str = "A unicode string" -- Or e.g. string loaded from a file str = convert(str, "utf16", "utf8") context(str) \stopuacode ---- TIA. Best regards, Lukas -- Ing. Lukáš Procházka | mailto:LPr@pontex.cz Pontex s. r. o. | mailto:pontex@pontex.cz | http://www.pontex.cz | IDDS:nrpt3sn Bezová 1658 147 14 Praha 4 Tel: +420 241 096 751 (+420 720 951 172) Fax: +420 244 461 038

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Opentype features and space after comma in math mode
by Jose Luis Arellano 03 Jun '17

03 Jun '17

Hello list, Two questions: 1) How can i enable opentype features (onum, lnum, tnum) in math mode? 2) How can i avoid the space after comma in math mode? I tried this without success: \definefontfeature[default][default][onum=yes,lnum=no,tnum=no] \definefontfeature[lnum][default][onum=yes,lnum=no,tnum=no,mode=base] \definefontfamily[mainface][serif][TeX Gyre Pagella] \definefontfamily[mainface][math][TeX Gyre Pagella Math][features=lnum] \setupbodyfont[mainface] \starttext 1,123\par \m{1,123}\par \stoptext Thanks in advance...

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mathmatrix and grid: followup
by Henri Menke 01 Jun '17

01 Jun '17

Dear list, some time ago I asked about the interplay of mathmatix with grid typesetting: https://mailman.ntg.nl/pipermail/ntg-context/2016/087018.html I noticed that when the grid is enabled, the height of a mathmatrix is rounded down which leaves less space above than below. In my opinion either the height should be rounded up or the depth rounded down here. In the original thread Wolfgang proposed using \setupformula[grid=tolerant] and adding a blank line before the formula (otherwise grid=tolerant is applied to the paragraph before). This workaround leads to the depth being rounded down in the example below which produces a more balanced output. Could this somehow be made the default behaviour or something? Currently it requires the user to notice that vertical spacing is off and correct it manually, including adding a blank line before the formula to prevent grid=tolerant being applied to the paragraph. Cheers, Henri --- \setuplayout[grid=yes] \showgrid \starttext \input knuth \startformula \vrule % make lineheight and depth visible \startmathmatrix \NC A \NR \NC B \NR \NC C \NR \stopmathmatrix \stopformula \input tufte \stoptext

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Bold italic font in Math (\definefallbackfamily)
by Jose Luis Arellano 14 May '17

14 May '17

Hello list, What is correct way to set bold italic font in math? \definefontfamily [Mainface] [rm] [Minion Pro] \definefallbackfamily [Mainface] [mm] [Minion Pro] [preset=math:lowercaseitalic] \definefontfamily [Mainface] [mm] [TeX Gyre Pagella Math] \setupbodyfont[Mainface] \starttext \startformula abc123 \stopformula \stoptext Thanks.

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Asymptote or Metapost and ConTeXt parameters.
by Jaroslav Hajtmar 19 Mar '17

19 Mar '17

Hello ConTeXtist, I saw the opportunity to insert an Asymptote picture into Context source code (due filter). For example here: https://mailman.ntg.nl/pipermail/ntg-context/2015/080581.html Is there a way to pass the ConTeXt parameter which influenced the creation of the Asymptote image? My point eg. the ability to define macros, which gave its parameters to Asymptote procedure or function and depending on these parameters, the image created by Asymptote looked differently. Before starting work on an illustrative example I am asking, whether it makes sense to deal with such a thing ... I suppose the impossibility of combining asymptote code and such Lua code (or not?). There is a similar possibility, at least in Metapost? For simpler pictures it would probably suffice .... Thanx Jaroslav Hajtmar

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xml in lua: how to say "ancestor"?
by Thomas A. Schmitz 04 Mar '17

04 Mar '17

Hi all, no real example, just snippets, sorry: I need to process xml documents in lua (because I want to collect information in tables). The structure is a bit irregular: <document> <chapter title="One"> <section title="One"> <subsection title="One"> Text </subsection> </section> </chapter> <chapter title="Two"> <subsection title="One"> Text </subsection> </chapter> </document> So chapters may or may not have sections. If, on the level of my subscetions, I want to extract the information of the chapter title, in a ConTeXt environment, I could say \xmlattribute{#1}{ancestor::chapter}{title}. How could I do the same in lua? I have something like xml.attribute(e, "../../chapter", "title", "") but that only works for the first case, not the second one. I tried to understand the lpegs in lxml-lpt.lua, but didn't succeed. Thanks, and best wishes Thomas

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Re: [NTG-context] which command would give the same effect as \pause in beamer ?
by damien＠thiriet.web4me.fr 02 Mar '17

02 Mar '17

Thank you for all your answers. I will have a look at the texmf/doc/context/presentation file which is not bundled with my 2015 OpenBSD package (at least find did not return it) and keep on learning. Have a nice day, Damien Thiriet

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Formula numbering conversion
by Antoine Cailliau 01 Mar '17

01 Mar '17

The following code is documented to change the numbering of the equations. However, this still use numerals for the equations. \setupformulas[conversion=characters] \starttext \placeformula[test] \startformula E = mc^2 \stopformula \stoptext Is this a bug ? Is it the correct way to change the numbering ? Any help is welcome. Thank you in advance, Antoine C.

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two framed item lists side by side
by Csikos Bela 01 Mar '17

01 Mar '17

Dear context user: I would like to put two itemized lists side by side (1cm between them), top aligned. I inserted each lists in framedtext and tried to use combinations but the distance between the two frames is too big, and the list are not top aligned. What would be a correct solution? I don't need the frame to be drawn. Why distance=1cm and width=12cm have no effect in my code? Thanks, bcsikos code: \setupitemize[each][packed,joinedup,n][stopper=.~,itemalign=flushright] \setupframedtext[width=5.5cm,frame=off,offset=0pt] \setupcombinations[width=12cm,distance=1cm] \starttext \startcombination[2] {\startframedtext \startitemize \item In The Flesh? 3:19 \item The Thin Ice 2:29 \item Another Brick In The Wall (Part 1) 3:09 \item The Happiest Days Of Our Lives 1:50 \stopitemize \stopframedtext }{}{ \startframedtext \startitemize \item Hey You 4:41 \item Is There Anybody Out There? 2:40 \stopitemize \stopframedtext }{} \stopcombination \stoptext

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xtables different frame thickness for one side only
by Csikos Bela 01 Mar '17

01 Mar '17

Dear context users: Is it possible to change the rulethickness of one side of a row in xtables? I the example below I'd like the bottom of the first row to be thicker than other sides. \starttext \startxtable[frame=on] \startxrow % bottom frame of this row should be thicker \startxcell AAA \stopxcell \startxcell BBB \stopxcell \stopxrow \startxrow \startxcell CCC \stopxcell \startxcell DDD \stopxcell \stopxrow \stopxtable \stoptext If I understand correctly xtables uses framed mechanism. For framed I could not find an option to change the frame thickness of individual sides. There's only rulethickness option which applies to all sides. According to this what I want to do in xtabels is not feasible. Please correct if I misunderstand something. Thanks you in advance, bcsikos

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