December 2024 - ntg-context - NTG Mailing Lists

On the use of btx datasets to manage images and plots
by marco.riggirello.98＠gmail.com 19 Dec '24

19 Dec '24

Dear all, since this is my first post on the mailing lists, let me make a small preamble: after years of LaTeX experience I decided in May to give ConTeXt a try. The journey has been extremely pleasant up to now, so I want to thank all the contributors to this project for making such a great piece of software. Now, let's dig into the topic: I'm a PhD student in High Energy Physics (HEP) and my typical work include producing lot of plots and then presenting them in various meetings, comparing my results with existing ones present in the literature. Tipically, many plots and figures are re-used in different meetings and they might end up in the final thesis. My current workflow is just copying in different directories these (mostly vector) images and copying the caption between different tex sources. This workflow clearly scales very bad, and I would like to exploit all the goodies of the ConTeXt dataset machinery. In the Bibliografies manual it is mentioned that one can use datasets to manage images as well [1]. My case however is (slightly) more complicated than the one showed in the manual. What I would like to have is four databases: - a bibliography dataset; - an "others' figure" dataset, with all the images I took from the references. This means that in some way in the caption I would like to cite the references included in the bibliography dataset; - a "own figures" dataset, with the plots I produced with external programs; - a "metafun figures" dataset, pointing at the metafun code corresponding to some diagram. In my idea, for each figure dataset the \placebtxrendering should plot the figure with the right label to refer to in the main text and the right caption. (Clearly for the metafun dataset it should not include the pdf of the diagrams but instead compile the metafun code). In this way, I could create a single ConTeXt project with different products for different presentations, posters and other documents. Do you think this workflow can be implemented in ConTeXt? If so, how? Is btx the right tool for the job? I hope I was clear, and sorry if I was not. Thanks in advance for the help. Cheers MR [1] https://www.pragma-ade.nl/general/manuals/mkiv-publications.pdf#%5B%7B%22nu…

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lmtx.pragma-ade.com down?
by juh+ntg-context＠mailbox.org 19 Dec '24

19 Dec '24

Hi, I cannot download context neither ping lmtx.pragma-ade.com. juh

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Strange character output when mixing different fonts
by autumnus 18 Dec '24

18 Dec '24

hi, When I mix the four fonts below, only the serif (mincho) outputs my characters correctly. However, if I only use any of these fonts for output, I will get normal characters. It's not clear to me if this is a bug with the font itself or what. If it's an issue with the fonts themselves, I'll report the bug to the designers of those fonts. But I'm not a programmer, so I'll only ask questions here. font: https://drive.google.com/drive/folders/1uk6fLzn8ZD0MeHSv78cFbQo4cclkOuly?us… 汇文明朝 -- huiwenmincho 汇文港黑 -- huiwenhkheiregular 汇文仿宋 -- huiwenfangsongregular 汇文正楷 -- huiwenzhengkairegular %%%%% \starttext { {\definedfont[name:huiwenmincho] Lorem Ipsum , 也称乱数假文}\par% normal {\definedfont[name:huiwenhkheiregular] Lorem Ipsum , 也称乱数假文}\par% normal {\definedfont[name:huiwenfangsongregular]Lorem Ipsum , 也称乱数假文}\par% abnormal {\definedfont[name:huiwenzhengkairegular]Lorem Ipsum , 也称乱数假文}% abnormal } \stoptext autumnus

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Issue loading an otf variable font
by Florent Michel 18 Dec '24

18 Dec '24

Hi, I was experimenting with variable fonts in ConTeXt. While all seems to work well when using a ttf font (like Recursive_VF_1.085.ttf), I am struggling to use .otf ones, like the Source Code Pro (downloaded from https://github.com/adobe-fonts/source-code-pro/releases/tag/2.042R-u%2F1.06… ). Minimal example: ________________________________________ \definefontfeature[myaxis][axis={weight=500}] \definefontfamily[mainface][rm][Source Code VF] [features={default, myaxis}] % Works when replacing the two above lines with these %\definefontfamily[mainface][rm][Recursive] % [features={default, myaxis}] \setupbodyfont[mainface] \starttext \mainface Hallo \stoptext ________________________________________ The (from what I understand) relevant part of the log is: __________________________________________________________________________ fonts > otf loading > loading '/home/florent/.local/share/fonts/SourceCodeVF-Upright.otf', hash 'sourcecodevf-upright-weight-500' otf reader > user instance: weight=500, factors: 0.42857142857142855 otf reader > cff > unknown local call 2, bias 107, case 2 : [48 32 60 164 26 72] n=6 otf reader > cff > unknown local call 2, bias 107, case 2 : [-10 42 -33 -90 10 26] n=6 otf reader > cff > unknown local call 2, bias 107, case 2 : [176 292 -5 -14 -15 -40] n=6 otf reader > cff > unknown local call 90, bias 107, case 2 : [-94 -168 -54 -92 28 76 49 132 5 14 -2 -4] n=12 otf reader > cff > unknown local call 2, bias 107, case 2 : [26 -26 21 58 -21 -58] n=6 otf reader > cff > unknown local call 1, bias 107, case 2 : [152 270 -25 -70 -38 -102] n=6 otf reader > cff > unknown local call 1, bias 107, case 2 : [-152 266 25 70 -36 -98] n=6 otf reader > cff > unknown local call 17, bias 107, case 2 : [] n=0 otf reader > cff > unknown local call 464, bias 107, case 2 : [] n=0 otf reader > cff > unknown local call 776, bias 107, case 2 : [172 29 80] n=3 otf reader > fatal error in file '/home/florent/.local/share/fonts/SourceCodeVF-Upright.otf': /home/florent/lmtx/tex/context/base/mkxl/font-cff.lmt:1956: attempt to perform arithmetic on a nil value (field '?') stack traceback: /home/florent/lmtx/tex/context/base/mkiv/font-otr.lua:2350: in metamethod 'mul' /home/florent/lmtx/tex/context/base/mkxl/font-cff.lmt:1956: in local 'a' /home/florent/lmtx/tex/context/base/mkxl/font-cff.lmt:2508: in upvalue 'process' /home/florent/lmtx/tex/context/base/mkxl/font-cff.lmt:2685: in upvalue 'processshape' /home/florent/lmtx/tex/context/base/mkxl/font-cff.lmt:2834: in upvalue 'parsecharstrings' /home/florent/lmtx/tex/context/base/mkxl/font-cff.lmt:3067: in upvalue 'readnoselect' /home/florent/lmtx/tex/context/base/mkxl/font-cff.lmt:3279: in local 'reader' /home/florent/lmtx/tex/context/base/mkiv/font-otr.lua:2094: in upvalue 'readtable' /home/florent/lmtx/tex/context/base/mkiv/font-otr.lua:2203: in upvalue 'readdata' /home/florent/lmtx/tex/context/base/mkiv/font-otr.lua:2263: in function </home/florent/lmtx/tex/context/base/mkiv/font-otr.lua:2246> [C]: in function 'xpcall' /home/florent/lmtx/tex/context/base/mkiv/font-otr.lua:2352: in upvalue 'loadfont' /home/florent/lmtx/tex/context/base/mkiv/font-otr.lua:2407: in field 'loadfont' /home/florent/lmtx/tex/context/base/mkxl/font-otl.lmt:160: in field 'load' /home/florent/lmtx/tex/context/base/mkxl/font-otl.lmt:663: in upvalue 'otftotfm' /home/florent/lmtx/tex/context/base/mkxl/font-otl.lmt:691: in function </home/florent/lmtx/tex/context/base/mkxl/font-otl.lmt:690> (...tail calls...) /home/florent/lmtx/tex/context/base/mkxl/font-def.lmt:364: in function </home/florent/lmtx/tex/context/base/mkxl/font-def.lmt:352> (...tail calls...) /home/florent/lmtx/tex/context/base/mkxl/font-def.lmt:467: in field 'read' /home/florent/lmtx/tex/context/base/mkxl/font-ctx.lmt:1385: in function </home/florent/lmtx/tex/context/base/mkxl/font-ctx.lmt:1240> (...tail calls...) fonts > otf loading > loading failed due to read error fonts > defining > forced type 'otf' of 'SourceCodeVF-Upright' not found __________________________________________________________________________ Interestingly, all works well if I delete the file SourceCodeVF-Upright.otf from my font directory to force the use of SourceCodeVF-Upright.ttf instead. Is there something wrong in my example which causes issues with the otf variant? Cheers, Florent

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can’t make a format with LMTX (Docker/linuxmusl)
by Henning Hraban Ramm 17 Dec '24

17 Dec '24

Hi, I tried to install LMTX/linuxmusl in a Docker container, installation seems to work ("context --version" looks good), but making the format fails with some Lua errors, e.g. loading > ConTeXt Token support / helpers … toks-aux.lmt:273: … operation on a nil value (field 'glyph') I don’t know if that’s musl or Docker related, I’ve no clue about these. Should I provide a full log? Hraban

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understanding \writetolist and \writebetweenlist
by Henning Hraban Ramm 17 Dec '24

17 Dec '24

Hi, I’m trying to understand the ordering of list entries and find it really hard. Below is the content of "inbetween-01.tex" from the test suite, more or less the same was in https://wiki.contextgarden.ne/Command/writebetweenlist; I tried to enhance it but probably messed it up. Looking at the examples, I only partly understand what’s going on. * What’s the difference of \writetolist and \writebetweenlist WRT their connection to the place where they occur? This seems to be important. (\writetolist has a section number, \writebetweenlist hasn’t …) * What’s the difference between location="here", "none" or nothing with \writetolist? * In my notes, I found the remark that "between" items should be anchored to a paragraph (not being their own par) to avoid inserting whitespace. * The order of \placelist can be normal, command, all or title. The latter isn’t mentioned in the file below, but in the interface. I don’t understand the effect for "normal" or "all" in the example. - normal: there’s some reordering. - command: "only the commands": does this mean, sort the "between" entries by macro name or how? - all: everything in the order of occurrence (that’s clear) - title: sorted by title; how does this affect "between" entries? Hraban """ % inbetween-01.tex \definelist[testlist][criterium=all] \starttext Regular list entries are bound to a specific location in order to get the right pagenumber etc.\ associated. When pushing something inbetween (in mkiv) it ends up directly in the list. This is the default because otherwise users will wonder why spacing might get messed up (due to an unseen but present node). It is possible to force a location by explicitly setting \type {location} to \type {here}. Another way to force a certain order is to set the \type {order} variable when placing a list. The \type {command} option only pushes commands into the right order, and \type {all} orders all entries (which might be too much). In this case no specific location is needed with the inbetween method. Maybe additional mechanisms show up some day. \subject{normal} \placelist[testlist] \subject{command} \placelist[testlist][order=command] \subject{all} \placelist[testlist][order=all] \page \input tufte \writetolist [testlist] {1} {One} \writebetweenlist[testlist] {\blackrule[color=red,width=\hsize]} \writebetweenlist[testlist][location=here]{\blackrule[color=blue,width=\hsize]} \writetolist [testlist] {2} {Second} \writetolist [testlist][location=none]{W} {Whatever} \writebetweenlist[testlist] {\blackrule[color=green,width=\hsize]} \stoptext """

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Possible to "freeze" numbering when using stacking
by Aditya Mahajan 16 Dec '24

16 Dec '24

Hi, I use stacking to incrementally reveal text in slides. Is it possible to freeze numbering when using stacking? Consider the following example: \setuppapersize[S4] \starttext \startstackingsteps[1,{1:2}] \placeformula \startformula A = B \stopformula \startstacking[2] This is an important formula \stopstacking \stopstackingsteps \stoptext Currently, the formula number is incremented on the second page. Would it possible to freeze the formula number? Thanks, Aditya

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Including SVG manipulating color or rewrite in MP
by juh+ntg-context＠mailbox.org 14 Dec '24

14 Dec '24

Dear all, I have near to zero knowledge about MPgraphics, so I always use SVG files from various sources. I do something like this: \defineoverlay[pic][\externalfigure[form.svg][width=14em]] \defineframed [textcircledA] [ frame=off, strut=yes, rulethickness=0.0pt, background=pic, location=top,] \textcircledA{\externalfigure[icon.svg][width=280px]} The form.svg appears as background of icon.svg. Now I want to change the stroke color in the svg. It is very simple: <?xml version="1.0" encoding="UTF-8"?>  <svg width="20.887mm" height="17.613mm" version="1.1" viewBox="0 0 20.887 17.613" xmlns="http://www.w3.org/2000/svg"> <g transform="translate(152.66 -101.94)"> <path d="m-150.94 114.93c-0.5424-1.3121-0.58209-2.9382 0.18256-5.2163 2.3566-7.0175 11.139-8.7098 15.878-3.0594 7.6978 8.7032-11.506 16.052-16.06 8.2756" fill="none" stroke="#99bcdb" stroke-linecap="round" stroke-width="2"/> </g> </svg> I can simply open it in inkscape set the color an save it under a meaningful filename, but I would like to set the color in the context file. I tried to define the overlay pic with \includesvgbuffer but I can't get it to work. \startbuffer[svg] <svg width="20.887mm" height="17.613mm" version="1.1" viewBox="0 0 20.887 17.613" xmlns="http://www.w3.org/2000/svg"> <g transform="translate(152.66 -101.94)"> <path d="m-150.94 114.93c-0.5424-1.3121-0.58209-2.9382 0.18256-5.2163 2.3566-7.0175 11.139-8.7098 15.878-3.0594 7.6978 8.7032-11.506 16.052-16.06 8.2756" fill="none" stroke="MyColor" stroke-linecap="round" stroke-width="2"/> </g> </svg> \stopbuffer \defineoverlay[pic][\includesvgbuffer[svg][offset=1bp]] Nothing happens, no form appears in the overlay. I saw an example with \startstopuseMPgraphic in the Wiki. \startuseMPgraphic{MPtextcircle} path p; p := fullcircle xscaled OverlayWidth yscaled OverlayWidth; setbounds currentpicture to p ; % p:= p shifted (0,StrutDepth/2.7); draw p withpen pencircle scaled 25pt withcolor OverlayLineColor; \stopuseMPgraphic \defineoverlay[OLtextcircle][\useMPgraphic{MPtextcircle}] This works for me. Is it possible to use a svgbuffer in a overlay definition? Or do I have to convert the SVG code to MP? Is there a converter? TIA juh

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genealogy tree
by Thomas Meyer 11 Dec '24

11 Dec '24

Hi folks, is it possible to build a complex pedigree\genealogy tree with ConTeXt, like in LaTeX with genealogytree? Or what possibilities are there? Greetings Thomas

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\filename and \tex
by Henning Hraban Ramm 11 Dec '24

11 Dec '24

Hi, \filename tends to get too much letterspacing; can I change that? \tex has strange hyphenation, seems to break whereever; can I change that? Hraban

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