August 2022 - ntg-context - NTG Mailing Lists

parameters of (setup)externalfigure, conversions etc.
by Henning Hraban Ramm 12 Aug '22

12 Aug '22

Hi Hans, yesterday you told me about the image conversions in grph-con.lua, and I tried to find out how to use them. Up to know I only knew "mp" for SVG images. I found I can use "gray.pdf" or "cmyk.pdf" to convert an image (JPG or PNG) to grayscale/CMYK, but the resolution isn’t used for downsampling (of course, it’s not mentioned in the command template): \externalfigure[hacker][conversion={gray.pdf},resolution=72] I tried to write my own downsampling converter, but don’t understand how I can hook it into the list of converters: """ local downsample = sandbox.registerrunner { name = "downsample", program = "gm", template = [[convert -compress Zip -sampling-factor 1x1 -density %resolution%x%resolution% -resample %resolution%x%resolution% %oldname% %newname%]], checkers = checkers, defaults = defaults, } programs.downsample = { runner = downsample } """ (I’m not sure if I must calculate the desired pixel size beforehand.) -*-*- Apart from converters, there are several parameters of \externalfigure that I don’t understand and thus can’t document in the Wiki; a few are even not yet documented in the interface files: * equalwidth/equalheight * s/sx/sy * xmax/ymax * prefix, label, comment * bodyfont * mask * frames (≠ frame) * interaction, crossreference * resources * display * order * crop, transform * controls, preview: only related to video and thus obsolete? * hfactor/wfactor: When do these make sense? (I know factor) I accidentally learned that I can use parameters of \framed, but the inheritance from \setupframed is not explicit – some are mentioned, like backgroundcolor, others not, even if they work, like corner (but they don’t affect the image). Hraban

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Numbercommand and title
by Fabrice Couvreur 12 Aug '22

12 Aug '22

Hello, How to make the period after the number be after the second parenthesis when there is a title like this Définition 1.1 (Title). ? Thanks Fabrice ################################################ \definestructureconversionset [structure] [n, R, n, n, n] [n] \defineconversionset [digit] [] [n] \setupheads[sectionconversionset=structure] \setupenumerations [before={\blank}, after={\blank}, alternative=serried, distance=0.5em, title=yes, titleleft=, titleright=, titlestyle=normal, numbercommand=\groupedcommand{}{.}, titlecommand=\groupedcommand{(}{)}, width=broad, way=bychapter, prefix=yes, prefixsegments=chapter, prefixconversionset=digit,] \defineenumeration [definition] [text=Définition, number=yes, style=italic] \starttext \startchapter [title={First Chapter}] \startdefinition [title={My first définition}] \input{ward} \stopdefinition \startdefinition \input ward \stopdefinition \startdefinition [title={My third définition}] \input ward \stopdefinition \stopchapter \stopchapter \stoptext

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TIL: figure combinations
by Henning Hraban Ramm 11 Aug '22

11 Aug '22

You probably know about combinations to place images side by side: \startcombination[3*1] {\externalfigure[cow]}{cow} {\externalfigure[mill]}{mill} {\externalfigure[hacker]}{hacker} \stopcombination Now, the widths aren’t calculated automatically. You could define them on your own: \startcombination[3*1] {\externalfigure[cow] [width=.3\textwidth]}{cow} {\externalfigure[mill] [width=.3\textwidth]}{mill} {\externalfigure[hacker][width=.3\textwidth]}{hacker} \stopcombination But that’s ugly and tedious. Hans did it for you: \definemeasure[combination][ (\textwidth -\effectiveleftskip -\effectiverightskip -\numexpr\combinationparameter\nx-\plusone\relax\dimexpr\combinationparameter\distance\relax )/\combinationparameter] So you can say: \startcombination[3*1] {\externalfigure[cow] [width=\measure{combination}]}{cow} {\externalfigure[mill] [width=\measure{combination}]}{mill} {\externalfigure[hacker][width=\measure{combination}]}{hacker} \stopcombination But that’s still tedious. With the power of \defineexternalfigure: \defineexternalfigure[combination][width=\measure{combination}] (That’s predefined, no need to copy!) \startcombination[3*1] {\externalfigure[cow] [combination]}{cow} {\externalfigure[mill] [combination]}{mill} {\externalfigure[hacker][combination]}{hacker} \stopcombination Beautiful. ;) Have fun, Hraban

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OT: Angebotsanfrage für Erstellung von Logo und Namensschildern
by Paul Menzel 11 Aug '22

11 Aug '22

[Excuse the German message. I am happy to translate it, if there is interest.] Sehr geehrte Damen und Herren, bitte senden Sie uns je ein Angebot für die folgenden Arbeiten zu. 1. Erstellung eines Logos für die IT4Science-Days – eine Konferenz der Helmholtz-Gemeinschaft und der Max-Planck-Gesellschaft 1. Nutzbar für Druck und Web 2. Bereitstellung im Vektorformat (SVG) 3. Bereitstellung bis 15. September 2022 4. 30 Minuten für Diskussion der Vorschläge 2. Grafisch-individuelle Namensschilder für IT4Science-Days 1. Skript auf TeX-Basis, das aus einer CSV-Datei im Format (Nachname, Vorname, Einrichtung) ein individuelles Namensschild erstellt. 2. Es ist optisch sichtbar, ob die Einrichtung der Person zur Helmholtz-Gemeinschaft oder Max-Planck-Gesellschaft gehört oder die Person ein Gast ist. 3. Bereitstellung bis 20. September 2022 Bitte fügen Sie dem Angebot Referenzen zu ähnlicher geleisteter Arbeit hinzu. Bitte lesen Sie die [Zusätzlichen Vertragsbedingungen der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. V.][1] und senden Sie uns dieses bis zum 20. August 2022 vorzugsweise als reine Textnachricht (mit Anhang) an dv-treffen(a)mpg.de mit dem Zeichen it4s-days-2022 zu. Sollten Sie kein Angebot abgeben können, teilen Sie uns das bitte auch mit. > Max-Planck-Institut für molekulare Genetik > z. H. Paul Menzel > Ihnestraße 63–73 > 14195 Berlin Freundliche Grüße Paul Menzel [1]: https://www.mpg.de/5757353/zusaetzliche-vertragsbedingungen-der-mpg.pdf

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How to display these characters
by juh+ntg-context＠mailbox.org 10 Aug '22

10 Aug '22

Dear all, I have this: \starttext \starttyping foo └── bar ├── baz │ └── index.html └── index.html \stoptyping \stoptext The source code is generated with the linux command "tree". The special characters which indicate the folder depth are not displayed. I guess that I could define a fallbackfont. Do anyone know the unicode range that should be covered and the font that has these characters? TIA juh

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MetaFun keywords extracted by mtxrun --script interface
by Nicola 10 Aug '22

10 Aug '22

I am updating Vim syntax coloring for Metapost/MetaFun, which is now based on the files that are automatically generated with mtxrun --script interface --vim To test the results, I am opening ConTeXt's own MetaPost files in the editor and check how they look. It seems that the output of the above command is missing several "keywords". For instance: beginglyph, endglyph, anglestriped, numberstriped, roundedsquarexy, starring, dashing, pathpoint, primitive, immutable, etc. Is it because MetaFun keywords are picked up manually? Nicola

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regular online meet-up
by Henning Hraban Ramm 10 Aug '22

10 Aug '22

You’re invited to join next Wednesday, August 10th, 15:00 CEST (UTC+2) at https://lecture.senfcall.de/hen-rbr-rku-oke ConTeXt users of all levels are welcome! There will be no meet-up in September (since it would be during the ConTeXt meeting); and then on October 12th. (Same blurb as every time:) [Howto] * No special software installation required; most modern browsers should work (WebRTC required). * Open the above URL, accept the privacy statement, * enter your name, * click "join" (or "start" if you’re the first), * click "with microphone", allow your browser to access it, check the audio. * Your microphone is muted if you join. Activate microphone and/or camera with the buttons at the bottom. * Minimize the default presentation with the "screen" button, bottom right. * If you’d like to share your screen or upload a file, you can make yourself the presenter: Click on your user name, change the setting, then you’ll see the "screen sharing" button beside the camera button; also there’s now "manage presentations" behind the "plus" button. Beware there is only one presenter, so don’t kill someone else’s presentation. [Technical hints] * Sound is usually better if you use a headset (less noise for everyone). * Connection problems are mostly due to low bandwidth or high latency on your side, e.g. with mobile connections. * If audio/video doesn’t work for you, you can still use the text chat. * Screen sharing needs a lot of bandwidth. * BigBlueButton documentation applies: https://bigbluebutton.org/teachers/tutorials/ [Netiquette] * Please use a name that we recognize from here. Some feel uncomfortable with anonymous lurkers. * Mute your microphone while you’re not talking. * It’s nice to show your face at least when you join. * If there are connection problems, stop camera sharing. * The room is set to “everyone’s a moderator“, I trust you... See you, Hraban

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update
by Hans Hagen 05 Aug '22

05 Aug '22

Hi, I uploaded a new lmtx that fixes a few math issues reported. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

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Cron <context@zapf> /var/www/aanhet.net/context/bin/cron/context-mirror
by root＠ntg.nl 05 Aug '22

05 Aug '22

receiving incremental file list ./ ctan.lsr document-2.htm download-1.htm download-2.htm logo-ade.png logo-cts.png logo-pod.png rss.xml show-fil.pdf context/latest/ context/latest/cont-mpd.zip context/latest/cont-ppc.zip context/latest/cont-sci.zip context/latest/cont-tmf.zip context/latest/cont-tst.7z context/latest/cont-tst.tar.xz context/latest/cont-tst.zip general/manuals/ general/manuals/onandon.pdf sent 116,276 bytes received 23,826,089 bytes 4,353,157.27 bytes/sec total size is 445,876,957 speedup is 18.62 Running archiver: New dir: /var/www/aanhet.net/context//htdocs/archives/context-2022-08-05.18 131954130 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-05.18/latest 126745317 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-05.18/current 18956262 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-05.18/alpha 126707516 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-05.18/beta 404367321 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-05.18 404367321 total

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underbrace under matrix
by Jethro Djan 05 Aug '22

05 Aug '22

Hello, I want to get underbraces under matrices in a math alignment environment. I’ve reproduced my problem here: \definemathmatrix [pmatrix] [left={\left(\,},right={\,\right)}] \starttext \placeformula[-]\startformula\startmathalignment \NC\ A \NC=\underbrace{ \startpmatrix \NC 5\NC 5\NR \NC -1\NC 7\NR \stoppmatrix}\NR \NC\NC=\underbrace{ \startpmatrix \NC 2\NC 1\NR \NC 4\NC 2\NR \stoppmatrix}\NR \stopmathalignment\stopformula \stoptext How can I achieve this? Jethro

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