April 2023 - ntg-context - NTG Mailing Lists

Kaktovik numerals
by Henning Hraban Ramm 20 Apr '23

20 Apr '23

I just came across this thread about the base-20 system of the Inuit people and the numerals invented for it in the 1990s: https://mathstodon.xyz/@johncarlosbaez/110215432175491555 This makes simple calculations just beautiful. Hraban

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About \blackrule
by Fabrice Couvreur 20 Apr '23

20 Apr '23

Hi, The idea is to have a black square whose height is that of the number 3. Thanks Fabrice \setupbodyfont[12pt,pagella] \starttext \blackrule[width=0.71em,height=0.71em]37254H \stoptext

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Google's Roboto Flex font typescript and goodies definition.
by Pawel Urbanski 19 Apr '23

19 Apr '23

Dear Everyone, Following my attempts to create and learn Context's ways to manage fonts, I would like to ask about the following: I've created the structure for fonts in texmf-local folder and after running scripts they are listed. The output for Roboto Flex is as follows: identifier familyname fontname filename subfont instances robotoflex robotoflex robotoflexregular robotoflex.ttf thin extralight light regular medium semibold bold extrabold black extrablack thinitalic extralightitalic lightitalic italic mediumitalic semibolditalic bolditalic extrabolditalic blackitalic extrablackitalic What is the proper way to use family name or font name to create a typescript file and a goodies file to take advantage of optical sizes. Google's Roboto Flex is an upgraded Roboto as a variable font. I know that this topic has been discussed many times and I've read the fonts manual but still have these questions. Most of the examples are rather ready solutions or templates but not always cover ways how to figure out values from scratch and how they correspond. Thanks for help, Pawel

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regular online meet-up
by Henning Hraban Ramm 19 Apr '23

19 Apr '23

You’re invited to join on Wednesday, April 12th, 15:00 CEST (UTC+2) at https://lecture.senfcall.de/hen-rbr-rku-oke (same, but shorter: https://v34h.de/ctxmtg) ConTeXt users of all levels are welcome! Next meeting will be on May 10th. (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 at a time, 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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\setupitemize[indentnext=auto] broken?
by Jim 19 Apr '23

19 Apr '23

In the wiki page https://wiki.contextgarden.net/Indentation there is the following example: %------------------------------------------------------------------------ \setupindenting[medium,yes] \setupitemize[indentnext=auto] \startitemize \item One \stopitemize This paragraph should be indented - due to the blank line after \type{\stopitemize}. \startitemize \item Two \stopitemize This paragraph should not be indented. %------------------------------------------------------------------------ Tragically, the paragraph which claims it should be indented is not, in both my test and the wiki page itself. Is this a documentation bug, a ConTeXt bug, or something else yet? Cheers. Jim

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xmlsetentity on the fly?
by Hans van der Meer 19 Apr '23

19 Apr '23

I would like to change an entity 'on the fly'. Example \def\DATE{THEDATE}\expanded{\xmlsetentity{DATE}{\DATE}} \startxmlsetups typ:event \def\DATE{NEWDATE}\expanded{\xmlsetentity{DATE}{\DATE}} Using &DATE; within the <event>. \stopxmlsetups However, using &DATE; inside an <event> always results in THEDATE and never in NEWDATE. How can I change the value of the entity inside the xmlsetups? dr. Hans van der Meer

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Table of contents in the middle of a document
by Kalouguine Andre 18 Apr '23

18 Apr '23

Hi, I was trying to have my "Acknowledgements" section/chapter before the table of contents but be contained within it. Is it normal that the table of contents is empty if there is a chapter that begins before it? ``` \starttext \chapter{Acknowledgements} Thank you \completecontent \chapter{Intro} \chapter{Problem} \chapter{Solution} \stoptext ``` I'm mostly looking for an explanation rather than a direct solution, I'd like to understand why it's empty. It works when using sections instead of chapters. Best regards, -- Kalouguine Andre

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new uplaod
by Hans Hagen 17 Apr '23

17 Apr '23

Hi, I uploaded a new lmtx. Again some updated math of which details will be revealed later. Apart from some details we added suport for fourier notations. There are no high level definitions yet as we have to invent names but this is how it works (private unicode slots might change): \setupbodyfont[pagella] \starttext \setupmathdelimited [topoffset=.2\exheight] \definemathdelimited [fourier] [rule=no, left=\zerocount, right="FE944] \definemathdelimited [courier] [rule=no, left=\zerocount, right="FE946] \definemathdelimited [xourier] [rule=no, left=\zerocount, right="FE948] $ \fourier{(z+1)} $ $ \fourier{(z+1)} + \sqrt[2]{1}$ $ \fourier{(z+1)} + \courier{(z+1)} + \xourier{(z+1)} $ $ \fourier{\left(z+\frac12\right)} + \courier{\left(z+\frac12\right)} + \xourier{\left(z+\frac12\right)} $ $ \autofences \fourier{(z+\frac12)} + \courier{(z+\frac12)} + \xourier{(z+\frac12)} $ $ \widehat{x^2 + 2x + 2} $ \stoptext This example also shows a new \autofences feature and widehats (widetilde and widecheck also work that way) that overcome limitations in fonts, so \def\CrappyHack#1{\im{#1{a} + #1{a+b} + #1{a+b+c} + #1{a+b+c+d} + #1{a+b+c+d+e} + #1{a+b+c+d+e+f}}\par} \CrappyHack\widehat \CrappyHack\widetilde \CrappyHack\wideacute \CrappyHack\widecheck will work. For thise in finance we now have $ \annuity{x + 1} + \lannuity{x + 1} + \rannuity{x + 1} + \lrannuity{x + 1} $ these are basically radicals (like sqrt) with two sided symbols. 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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help wanted: English native speaker as co-editor
by Henning Hraban Ramm 16 Apr '23

16 Apr '23

Hi, as most of you know, I’m the editor of context journal, the annual magazine for all members of context group, AKA “proceedings of the [previous] ConTeXt meeting”. While I have some experience as an editor in German, my English is far from perfect, so I need to rely on a native speaker for proofreading. In the least years, Clyde was filling that role very diligently, but he just moved and can’t make the time again. Deadline for the current issue is only in August, but we’re already at ~100 pages with the articles I got (by Willi, Willi, Willi, Taco, Taco, Götz, and me) and I’d like to spread the work a bit. * Would you like to help with that? * – You don’t need to understand the code. – I want the text to be correct and understandable, we don’t need to reach literary quality. – You can work in PDF or in the sources, as you like. – More than one person is welcome. BTW I never thought of offering “our” articles to TUG and NTG, while I sometimes got articles that were published in TUGboat or MAPS first. (And I’m writing/translating for DANTE’s DTK regularly.) I’ll start to do that, since “recycling” makes sense, and it also can’t hurt to spread the word. This is also a reminder to hand in your talks from Dreifelden – or new articles! Hraban

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Nuclear reactions
by Gavin 16 Apr '23

16 Apr '23

Hi list, I’m writing nuclear reactions. When add prescripts to atomic symbols with two letters, (Be, Sr, Xe, etc.) the prescripts split the atoms! (See output below.) \starttext Text: \lohi[left]{4}{10}Be. Reaction: \startformula {\rm U}^^{235}__{92} + n \rightarrow {\rm Sr}^^{94}__{38} + {\rm Xe}^^{140}__{54} + 2n \stopformula \stoptext I looked at \chemical and \molecule, but could not find a way to make isotopes with those. Any ideas? Gavin

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