December 2023 - ntg-context - NTG Mailing Lists

Size of subscript notations
by Fabrice Couvreur 29 Dec '23

29 Dec '23

Hi, To type my lessons or other, I use the Modern font in 12 pt or 11 pt. I find that the subscript notations are a little too big : how can I improve this ? Thanks Fabrice \m{ \forall n \in N, z_{n+1}=\frac{i}{3}z_n}

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How to implement word corrections
by Jairo A. del Rio 27 Dec '23

27 Dec '23

Hi, list! I'm writing a small module to print word corrections, e.g., things like "irregardless" > "regardless"or "alverja" > "arveja" ('pea' in Spanish) with overstrikes and underlines, but I want feedback to make a module in the ConTeXt fashion. I hope the PDF attached explains better what I mean. Just in case, I want to know if anyone else in the mailing list is acquainted with grammar and orthography quizzes/exercises/exams in ConTeXt. Merry Christmas and Happy New Year! Best regards, Jairo

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Question about drawing flowchart using chart module
by Jeong Dal 27 Dec '23

27 Dec '23

Dear all, I tried to draw a flow chart using the module[chart]. Following the examples, I draw one. The problem is that the size of the chart is not changed even though I changed the numbers dx,dy, width, height, and maxwidth in the \setupFLOWcharts Please tell me how to resize the chart. Thank you. Dalyoung %%%%%% \usemodule[chart] \starttext \startFLOWchart[bigger] \setupFLOWcharts [option=test, nx=3, ny=6, dx=\bodyfontsize, dy=\bodyfontsize, width=6cm,%.5\bodyfontsize, height=10cm,%.3\bodyfontsize, maxwidth=.5\textwidth ] \startFLOWcell \name{a} \location{2,1} \shape{loop} \text{start} \connection[bt]{b} \stopFLOWcell \startFLOWcell \name{b} \location{2,2} \shape{79} \text{input $a,b$} \connection[bt]{c} \stopFLOWcell \startFLOWcell \name{c} \location{2,3} \shape{decision} \text{$a-b > 0$} \connection[lt]{d} \comment[l]{Yes} \connection[rt]{g} \comment[r]{No} \stopFLOWcell \startFLOWcell \name{d} \location{1,5} \shape{76} \text{$a$ is bigger \\ than $b$} \connection[bt]{f} \stopFLOWcell \startFLOWcell \name{e} \location{2,5} \shape{76} \text{$b$ is bigger \\ than $a$} \connection[bt]{f} \stopFLOWcell \startFLOWcell \name{g} \location{3,4} \shape{decision} \text{$a - b < 0$} \connection[lt]{e} \comment[l]{Yes} \connection[bt]{h} \comment[b]{No} \stopFLOWcell \startFLOWcell \name{h} \location{3,5} \shape{76} \text{$a$ is equal \\ to $b$} \connection[bt]{f} \stopFLOWcell \startFLOWcell \name{f} \location{2,6} \shape{loop} \text{stop} \stopFLOWcell \stopFLOWchart \placefigure [here][fig:bigger] {Which is bigger?} {\tx\setupFLOWcharts\FLOWchart[bigger]} \stoptext

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error: Control sequence expected instead of undefined
by Jeong Dal 25 Dec '23

25 Dec '23

Hi, I got an error message as following: Control sequence expected instead of undefined If I comment out the “\externalfigure[][]” line, then there is no error message. I don’t know what is wrong in the sample code. Please check the code. Thank you for reading. Best regards, Dalyoung %%%********************* \starttext \in{figure}[fig:kruskal1] is my point. \startplacefigure[location=,reference=fig:kruskal1,title={}] \externalfigure[cow][width=.5\makeupwidth] \stopplacefigure \stoptext %%%%%

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\setupsynonyms textstyle=cap failing
by Garulfo 24 Dec '23

24 Dec '23

Hi all, the following minimum working example is properly typesetted with textstyle=bold, but it fails with textstyle=cap (ConTeXt version : 2023.09.26 18:19) A number should have been here; I inserted '0'. (If you can't figure out why I needed to see a number, look up 'weird error' in the index to The TeXbook.) mtx-context | fatal error: return code: 1 It works on https://context-on-web.eu (ConTeXt version : 2022.12.22 22:17) \definesynonyms [abbreviation] [abbreviations] [\AbbreviationsFull] \setupsynonyms [abbreviation] [textstyle=bold] \starttext \contextversion \abbreviation{NTG}{Nederlandstalige TeX Gebruikersgroep} Test 1 : \NTG . Test 2 : \AbbreviationsFull{NTG}. \stoptext Any clue ?

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QR Code
by Ursula Hermann 21 Dec '23

21 Dec '23

Dear List I was interested how it works. So I started this example. \starttext \usemodule[m-zint] \barcode[alternative=isbnx, text=9783865419026, width=4cm] \barcode[alternative=qrcode, text={https://wiki.contextgarden.net}, width=3cm] \stoptext Is that the right way? Many thanks Uschi

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underbrace label across two lines
by Dean Hung 20 Dec '23

20 Dec '23

Hi list, Following on from Aditya's solution to my previous question, I have run into a separate issue and would appreciate any assistance. Sometimes text under the underbrace can become quite long, and should be split into two (or more) lines. In the example below, "firstline" should be the top line of the underbrace label, and "secondline" should be on the lower line of the underbrace label, but as it stands, both are printed on the same line. \underbrace[mindepth=0.5cm]{\tf x+y+z}_{\vrule width 0pt height 0.5cm\relax\text{firstline secondline}} I have tried using \\ and \crlf, but to no avail. Any help would be greatly appreciated! Dean

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install-modules script and git URLs
by Pablo Rodriguez 20 Dec '23

20 Dec '23

Hi Hraban and Taco, the install-modules script doesn’t allow .tar.gz as compression format to install modules. .tar.gz seems to be the compression format offered for modules that are uploaded using a git URL. Hraban explained in August that thee server could be configured to get .zip compression for modules in git checkout. Sorry, I know that you are both very busy, but could it be this issue fixed? Using git to upload module versions is way more easy than uploading .zip files. Many thanks for your help to both, Pablo

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Seeking advice for module that draws globes
by Gavin 19 Dec '23

19 Dec '23

Hello ConTeXters, I wrote a little ConTeXt module for drawing globes. I would love some advice on how to improve it and share it. The code is quite short (about 250 lines). Most of the work is done by Lua, which reads the data files and calculates paths. These paths are passed to MetaFun, which draws the globe. Below is an example document with the output. (I attached a small .png of the output for the mailing list. The output PDF has excessive detail.) The module (code and data) is on GitHub at https://github.com/GavinPolhemus/luageo. \usemodule [luageo] \startMPpage GlobeDiameter = 10cm ; fill fullcircle scaled GlobeDiameter withcolor .9white ; % Fill a circle with the water color. drawglobe(23, 0) scaled GlobeDiameter withcolor .75white ;% Draw the land, centered on the given latitude and longitude. draw fullcircle scaled GlobeDiameter withcolor black ; % Add a border, if you want. \stopMPpage I am a novice at both Lua and MetaPost. I’m also new to Git and have never shared anything of substance with the ConTeXt community. (This barely counts as substantive, but I figure it’s best to start small.) I’m sure many of you could find opportunities for improvement with even a quick glance at the code. I welcome anything, from advice on performance to suggestions about the license. My most pressing questions are these: 1. How do I avoid redrawing diagrams with every typeset? The globe above takes about 0.7s, which is not bad, but it adds up in a book with many diagrams. 2. How do I organize this according to TDS for sharing? I know what TDS is and why it’s important, but that’s about it! 3. Should I be creating a namespace for this module, or launching a separate MetaFun instance? I have a general sense of what “namespace” and “instance” mean is this context, but I don’t know the consequences or the how-to. I’d like to share this module, even though the potential demand is tiny, at best. I’m going through the Module Writing Guidelines (https://wiki.contextgarden.net/Modules#Module_writing_guidelines) but there is a lot that I don’t understand in those instructions. Questions 2 and 3 above relate to the instructions that are most mysterious to me. I think I can figure most of the others out. I have been using ConTeXt for several years to write a high school physics textbook (along with the problem sets, tests, equations sheets, etc.). I wrote this module because I needed globes in some diagrams. I found an old MetaPost tool, mp-geo, that seemed to have the right ingredients, but I couldn’t get it to work, so I wrote my own tool using the data files from mp-geo. Hans and others on the list gave me valuable advice for these globes a couple years ago (and gave other valuable advice on all sorts of things before and since). Many diagrams in my physics book use TikZ and pgfplots. I'd like to convert everything to MetaFun. I think the best way will be writing a few more modules for things like graphs (including polar and 3D plots), simple circuits, simple Feynman diagrams, etc. I’m hoping that these would be useful to the ConTeXt community. The luageo module has the basic design I’d like to use for the others: Lua for data handling and calculations, producing paths that are drawn by MetaFun. With some mentoring from the generous ConTeXt community, I’m hoping we can provide MetaFun alternatives to some of the TikZ libraries. I have an alpha version of luagraph by Alan Braslau, which was helpful in designing luageo. Working on luagraph is my next project. Gavin

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increase vertical between underbrace and equation
by Dean Hung 19 Dec '23

19 Dec '23

Hi ConText friends, I am trying to increase the vertical distance between the underbrace and the part of the equation above the underbrace. \startformula \underbrace{x+y+z}_{\blank[1cm]\mathrm{my text here}} \stopformula I've tried using \blank and \vspace, but to no avail. For example: \underbrace{x+y+z}_{\blank[1cm]\mathrm{my text here}} ...does not work. The documentation on underbrace (and overbrace, underbracket, etc...) in the ContextGarden wiki seems to be very limited, and I was not able to find any user-supplied arguments for increasing this vertical distance. There are various solutions available for LaTex, and they require external packages (e.g., BigStrut, vphantom) that redefine the strut height. I hope I'm missing something simple... Any help would be greatly appreciated! DY Hung

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