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Appearance of ticks and grids with ConTeXt metapost graph module
by Jean-Philippe Rey 04 Jan '21

04 Jan '21

Dear list, Thanks to Hans, I am now able to use the ConTeXt graph module with LMTX. However, I noticed that the tick/grid labels are drawn with the same parameters as the tick/grid marks. For example grid.bot("@d", 1) withcolor red; will draw the grid line AND "1" in red. The original metapost graph module doesn't apply drawing instructions to the label. That seems a better choice as you usually don't want to apply special effect on the labels. If you really want to draw the label with specific parameters you can write, for example, grid.bot(image(draw textext(1) withcolor blue;), 1) withcolor red; and get red lines and blue labels. With the ConTeXt version, both line and label would be red! What do you think about reverting to the original metapost behavior? If I am right, here is a patch to do it: --- mp-grap.mpiv 2021-01-04 18:29:15.000000000 +0100 +++ mp-grap-new.mpiv 2021-01-04 20:47:36.000000000 +0100 @@ -882,7 +882,7 @@ if c : graph_xyscale fi shifted (((.5 + mfun_laboff@# dotprod (.5,.5)) * mfun_laboff@#) graph_xyscale) ; image(draw p w ; - label@#(if string f : format(f,u) else : f fi, point 0 of p) w) + label@#(if string f : format(f,u) else : f fi, point 0 of p)) fi enddef ; Thanks for reading this far. -- Jean-Philippe Rey jean-philippe.rey(a)centralesupelec.fr 91192 Gif-sur-Yvette Cedex - France Empreinte PGP : 807A 5B2C 69E4 D4B5 783A 428A 1B5E E83E 261B BF51

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Re: [NTG-context] MP reflectedabout broken?
by Damien Thiriet 04 Jan '21

04 Jan '21

> u is undefined. Ups, sorry for the noise. Too used to adding those u and didn't notice it when proofreading. So I shall now dig into a much complex file to understand why it compiled before updating and stop after… Once again sorry for wasting your time. Best regards, Damien Thiriet

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MP reflectedabout broken?
by Damien Thiriet 04 Jan '21

04 Jan '21

Hi, I updated ConTeXt yesterday and went through troubles with reflectedabout. This snippet of code \starttext \startMPpage path p[]; p1:= unitcircle scaled 10; p2:= p1 reflectedabout ((15u,-15u),(15u,15)); draw p1; draw p2; \stopMPpage \stoptext doesn't compile with the following error message metafun > log > I'm unable to apply a partially specified transformation except to a fully known pair or transform. Proceed, and I'll omit the transformation. metafun > log > error: Transform components aren't all known metafun > log > metapost > log > metapost > log > <to be read again> metapost > log > = metapost > log > reflectedabout->transformed.begingroup.transform.temp_transform;(EXPR0)transformed.temp_transform= metapost > log > (EXPR0);(EXPR1)transformed.temp_transform=(EXPR1);xxpart.temp_transform=-yypart.temp_transform;xypa... metapost > log > <*> path p[]; p1:= unitcircle scaled 10; p2:= p1 reflectedabout ((15u,-15u),(15u,15)) metafun > log > metafun > log > I'm unable to apply a partially specified transformation except to a fully known pair or transform. Proceed, and I'll omit the transformation. My version: current version: 2020.12.30 16:45 Did I missused this function before? Best regards, Damien Thiriet

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mathmatrix and tagging
by Christoph Reller 04 Jan '21

04 Jan '21

Hi, Unfortunately, the following MNWE results in an error when compiled with the latest version of ConTeXt LMTX: \setuptagging[state=start] \definemathmatrix[mymatrix][left={\left(},right={\right)}] \starttext \startformula \startmymatrix \NC A \NC B \NR \stopmymatrix \stopformula \stoptext Omitting "\setuptagging[state=start]" removes the error. A fix would be highly appreciated! Cheers, Christoph

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Part label and chapter numbers
by jbf 04 Jan '21

04 Jan '21

This is a Mark IV issue rather than LMTX, and while it is almost certainly simple enough, I seem to have got myself confused and am not getting the results I need. essentially I am dealing with a book that is divided into parts and chapter, but the parts need to be called 'Section' not 'Part', and the Chapter numbers need to be words and sequential throughout the book, not restarting at each part/section. Issue 1: Parts need to be called 'Section' (Section 1, section 2 etc.). I thought I could achieve this with: \setuphead [part] [ placehead=yes, bodypartlabel=section, ] but then I just get the number 1, 2, not Section 1, Section 2 Of course, if I write bodypartlabel=part, then I do get Part 1, Part 2, etc. How do I achieve 'Section' rather than 'Part'? Issue 2: While the above 'sections' are numbered in arabic numbers, Chapters are meant to be in words. I thought I could do it with \setuphead [chapter] [deepnumbercommand=\convertnumber{words}] but this throws an error. How do I achieve this? I want Chapter One, not Chapter 1.1 Issue 3 might already be solved once I resolve Issue 2! But given that I have parts, the chapters at the moment come out as Chapter 1.1... Chapter 2.1 etc. and I simply want Chapter One, Chapter Two and so on, sequentially throughout the book. I thought I might be able to do it with something like \setuphead[section-2][bodypartconversion=Characters] |But that doesn't work. Any thoughts? Julian |

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Re: [NTG-context] SILE typesetter and other projects
by Andres Conrado Montoya 03 Jan '21

03 Jan '21

Hi Denis. SILE seems interesting, aslo Patoline. However, I think both of these are very immature, and I feel somewhat puzzled by the authors of SILE when they say that you can't do grid typesetting on TeX without horrible hacks, blatantly ignoring ConTeXt's achievements on the matter. If you want to check an alternative typesetting system, I would tell you to not look forward but backwards: groff/troff are alive and well, are very mature, and you can find a lot of documentation and tutorials, even a subreddit: https://www.reddit.com/r/groff/. I would recommend trying the MOM macros for groff: http://www.schaffter.ca/mom/mom-01.html -- Andrés Conrado Montoya Andi Kú andresconrado(a)gmail.com http://sesentaycuatro.com http://messier87.com http://chiquitico.org ---------------------------------------- Los fines no justifican los medios, porque la medida verdadera de nuestro carácter está dada por los medios que estamos dispuestos a utilizar, no por los fines que proclamamos. ---------------------------------------- “You develop an instant global consciousness, a people orientation, an intense dissatisfaction with the state of the world, and a compulsion to do something about it. From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ‘Look at that, you son of a bitch.’” — Apollo 14 astronaut Edgar Mitchell

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SILE typesetter and other projects
by denis.maier＠ub.unibe.ch 03 Jan '21

03 Jan '21

Hi I just came across the SILE typesetter (https://sile-typesetter.org) which looks quite interesting and somehow similar to ConTeXt in some ways (e.g. lua), apart from the fact that it does not use TeX at all. ;-) Another project seems to be Patoline. Just out of curiosity: Has anyone some experience with these tools? Best Denis

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metapost graph and ConTeXt LMTX
by Jean-Philippe Rey 03 Jan '21

03 Jan '21

Dear List, I have used TikZ and pgfplots for a few years and I am considering switching to metapost/metafun which appears more efficient with LMTX. I have already designed several figures with metapost/metafun and some with the help of metaobj and I am fully satisfied with the result. I am now trying to draw graphs with the metapost graph module, but I haven't been integrated to my ConTeXt LMTX document. The following example works perfectly well when compiled directly with metapost (from TeXlive 2020). ===== mpost example ============= beginfig(1) input graph draw begingraph(150mm, 100mm); gdraw "test-mpgraph.txt"; endgraph; endfig; end ================================= Here is my demo data file ==== test-mpgraph.txt ======== 0 0 1 1 2 2 3 1 4 3 5 2 6 1 ============================== I tried the following to draw directly from a ConTeXt document ==== LMTX example ================= \starttext \startMPcode troffmode:=0; prologues:=0; input graph draw begingraph(150mm, 100mm); gdraw "test-mpgraph.txt"; endgraph; \stopMPcode \stoptext =================================== I had to define troffmode and prologues, otherwise I get error messages about undecidable expressions and now I get an error that I don't understand (see attached log file). I also tried \usemodule[graph] as documented on the wiki (https://wiki.contextgarden.net/MPgraph) but without success. I guess I am doing something wrong. Could someone help me see my error? Thanks, -- Jean-Philippe Rey jean-philippe.rey(a)centralesupelec.fr 91192 Gif-sur-Yvette Cedex - France Empreinte PGP : 807A 5B2C 69E4 D4B5 783A 428A 1B5E E83E 261B BF51

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upcoming lmtx
by Hans Hagen 03 Jan '21

03 Jan '21

Hi, I'm playing with future font trickery and as a consequence touching some low level font code. Now, of course we want to be compatible but it might be that I mess up something the process. At some point I'll do a more drastic split in the code paths (because when we use these new tricks we can drop/bypass some code). Anyway, one of these days I'll do the usual update so consider this a warning (invitation) to make a opy of the current tree so that we can see where things differ: for text as well as math. There can eb subtle differences due to calculations and rounding in different places (just different concepts). A teaser (mostly for MF whih probably runs the most demanding jobs): The luametatex manual has 290 pages and loads quite some fonts (half a dozen bodyfont setups in order to demo some things with different fonts). old mechanism: 10.8 sec, 292M lua, 99M tex, 158 instances new mechanism: 9.5 sec, 149M lua, 35M tex, 30 instances Where the new mechanmism uses: \enableexperiments[fonts.compact] (not yet in current lmtx). The new mechanism delays scaling and does it on the fly (which means more work for the engine and also means that some of the context font and lua magic has to follow). The added code actually makes the old one runs a bit slower, so the gain is a bit less than indicated (say, between 5-10% runtime on *this* document but definitely the mem saving remains). Of course in practice most documents are not that demanding but we'll see. (As mentioned before, it might have some positive impact on cjk usage). Also, if we follow this route, some code can be optimized (which compared to mkiv, but that is more in the small nmumbers because it is already optimized.) 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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Text editor support via Digestif
by Augusto Stoffel 03 Jan '21

03 Jan '21

Hi all, I have worked a bit on ConTeXt support in the Digestif language server [1], and I think it's pretty usable by this point, so I would like to invite everyone to check it out. Feedback is welcome. Digestif plugs into any editor that support the Language Server Protocol, and provides the usual IDE features: completion (of commands, keyword arguments, references, citations), go to definition, find references, document outline, etc. Among the fancier features is fuzzy-matching, so you can, say, find a citation by typing parts of the title or author names (and get away with using meaningless BibTeX identifiers). The newest (git) version reads the ConTeXt interface files at runtime, so it should be pretty accurate, and also work with third-party packages. It would be cool to also have some integrated documentation, but it looks like ConTeXt (or TeX in general) doesn't have anything of help in this direction currently, right? Another nice thing is that Digestif is a Lua program, and can run on the LuaTeX interpreter with no extra dependencies. On the other hand, I didn't get the change to test it on Windows or editors other than Emacs, although both things should work with minimal adjustments. Let me know if you have any issues. Best, Augusto [1]: https://github.com/astoff/digestif

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