October 2023 - ntg-context - NTG Mailing Lists

Double sided pages leave a thin white line on the right side
by Mia Bikey 28 Oct '23

28 Oct '23

Hi, I was using \setuppagenumbering[alternative=doublesided] to get double sided pages. After doing that I noticed a thin white line on the right side. Here is a Minimal Working Example: ConTeXt ver: 2023.09.26 18:19 LMTX \setupbackgrounds[page][background=color,backgroundcolor=black] \setuppagenumbering[alternative=doublesided] \starttext a \stoptext

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Mono font goes inside right inline image
by Mia Bikey 28 Oct '23

28 Oct '23

Hi, I was using mono font as my default font but it appears to have issues with right side inline images. Here is a Minimal Working Example: ConTeXt ver: 2023.09.26 18:19 LMTX \setupbodyfont[mono] \starttext Image on the right side gets issues. \placefigure[right]{}{\externalfigure[dummy]} \input tufte \\ Image on the left side is fine. \placefigure[left]{}{\externalfigure[dummy]} \input tufte \stoptext

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Color option in \setupinteraction doesn't work sometimes
by Mia Bikey 28 Oct '23

28 Oct '23

Hi, I was trying to get all my references black as it goes well along with black text but they appear red in some pages. I have reinstalled context in case there was some software issue but it is still the same. Here is a minimal working example: ConTeXt ver: 2023.09.26 18:19 LMTX \setupinteraction[state=start, color=black] \starttext \placeformula[eq:equation1] \startformula x \stopformula References are red on the first page \in[eq:equation1] \at{page}[eq:equation1] \input tufte \input tufte \input tufte \input tufte \input tufte Now they become black \in[eq:equation1] \at{page}[eq:equation1] \stoptext

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Combining python and lua
by Alexandre Christe 26 Oct '23

26 Oct '23

Dear list, I’d like to know the best approach to make this a bit more usable. I’m trying to typeset a table with sin/cos/tan values. I’d like to be able to convert the angles in degrees into radians (with math notation) and to compute the trigonometric function leading to sin(pi/4) = 1/2, or cos(pi/6) = sqrt(3)/2 and display it in math mode. Here’s my current MWE, where I fail to convert the angles in radians and fail to display the result in symbolic form. \starttext \startluacode local angleList = {0, 30, 45, 60, 90, 120, 135, 150, 180, 210, 225, 240, 270, 300, 315, 330, 360} context.bTABLE() context.bTR() context.bTD() context("$x$") context.eTD() context.bTD() context("$0$") context.eTD() for _, a in ipairs(angleList) do context.bTD() context("$\letterpercent.0f$",a) context.eTD() end context.eTR() context.bTR() context.bTD() context("$\\cos(x)$") context.eTD() for _, a in ipairs(angleList) do context.bTD() context("$\letterpercent.3f$",math.cos(math.rad(a))) context.eTD() end context.eTR() context.bTR() context.bTD() context("$\\sin(x)$") context.eTD() for _, a in ipairs(angleList) do context.bTD() context("$\letterpercent.3f$",math.sin(math.rad(a))) context.eTD() end context.eTR() context.bTR() context.bTD() context("$\\tan(x)$") context.eTD() for _, a in ipairs(angleList) do if a == 90 or a == 270 then context.bTD() context("$-$") context.eTD() else context.bTD() context("$\letterpercent.3f$",math.tan(math.rad(a))) context.eTD() end end context.eTR() context.eTABLE() \stopluacode \stoptext \stoptext One possible way would be to use Python and the t-filter module, like this \usemodule[filter] %It depends on your OS. In mine it's python3 \defineexternalfilter [pythontyping] [filtercommand={python3 \externalfilterinputfile \space > \externalfilteroutputfile}, output={\externalfilterbasefile.tex}, cache=yes, readcommand=\typefile, spacebefore=medium, spaceafter=medium] %We copy settings to save typing \defineexternalfilter[pythonformula][pythontyping] %But instead of typing, we input a formula \setupexternalfilter[pythonformula] [readcommand=\samplefile] %\input should also work \starttext Convert angle to radians: $\startpythonformula from sympy import * print(latex(pi/180*60)) \stoppythonformula$ Compute trigonometric function: $\startpythonformula from sympy import * print(latex(cos(pi/3))) \stoppythonformula$ \stoptext However, I haven’t managed so far to combine things (lua and Python) in an automatic way. How should I proceed? A. Christe

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Footnotes on the bottom of the column's current page, instead of the columns' end
by Juliano David Hilario 26 Oct '23

26 Oct '23

> > > Hello, I'm trying to achieve a look similar to a magazine our religious organization frequently discusses, but unfortunately can't find the correct settings to do so. Whenever I call a custom note on a column, instead of the note showing on the bottom of the page, it shows at the end of the column. (like an endnote, except, it shows as a small footnote at the beginning) How should I make it shown on the bottom of the page of the current footnote instead of the end of the column command? My MWE:

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sidebar and marginrule not working
by Hamid,Idris 24 Oct '23

24 Oct '23

Dear gang, The appears to be something wrong with the sidebar and marginrule mechanisms. MWE: ============== % ConTeXt ver: 2023.09.26 18:19 LMTX \setupmarginrule[1][rulecolor=darkred] \definesidebar[Sidebar][rulethickness=0.28pt,distance=3pt,rulecolor=darkgreen] \setupsidebar[rulecolor=darkgreen] \starttext \startmarginrule[1] \input ward \stopmarginrule \blank \startsidebar[Sidebar] \input zapf \stopsidebar \stoptext ============== In the output, either i) the rules do not appear at all (most attempts); or ii) the rules appear for a split-second then disappear (using sumatrapdf as the viewer, so the pdf updates on the fly). Is is a bug? A second question: Is either mechanism preferable over the other? That is: In LMTX, what is the best mechanism to use? Thank you in advance for any guidance. Best wishes -- Idris Samawi Hamid, Professor Department of Philosophy Colorado State University Fort Collins, CO 80523

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Re: sidebar and marginrule not working
by Hamid,Idris 24 Oct '23

24 Oct '23

------ Original Message ------ From "Hamid,Idris" <Idris.Hamid(a)ColoState.EDU<mailto:Idris.Hamid@ColoState.EDU>> To "mailing list for ConTeXt users" <ntg-context(a)ntg.nl<mailto:ntg-context@ntg.nl>> Date 10/23/2023 6:24:38 PM Subject [NTG-context] sidebar and marginrule not working Dear gang, The appears to be something wrong with the sidebar and marginrule mechanisms. MWE: ============== % ConTeXt ver: 2023.09.26 18:19 LMTX \setupmarginrule[1][rulecolor=darkred] \definesidebar[Sidebar][rulethickness=0.28pt,distance=3pt,rulecolor=darkgreen] \setupsidebar[rulecolor=darkgreen] \starttext \startmarginrule[1] \input ward \stopmarginrule \blank \startsidebar[Sidebar] \input zapf \stopsidebar \stoptext ============== In the output, either i) the rules do not appear at all (most attempts); or ii) the rules appear for a split-second then disappear (using sumatrapdf as the viewer, so the pdf updates on the fly). Is this a bug? A second question: Is either mechanism preferable over the other? That is: In LMTX, what is the best mechanism to use? Thank you in advance for any guidance. Here is the pdf that is a result of the MWE above: https://www.dropbox.com/scl/fi/r18ao8dhpz8m5cj3jk7kv/test-sidebar.pdf?rlkey… Also attached. Best wishes -- Idris Samawi Hamid, Professor Department of Philosophy Colorado State University Fort Collins, CO 80523

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Large unwanted white space
by Fabrice Couvreur 22 Oct '23

22 Oct '23

Hi, I don't know if I will explain my problem clearly but I will try. For my students' tests, I use a master file. If I insert this piece of code, there is a large white space that is created between the horizontal line of the header and the first exercise. Thanks for your help. Fabrice \startMPcode def suite (expr n, t) = begingroup numeric u; u := 5mm; pickup pencircle scaled 5pt; for i=0 upto n: for j=0 upto n: drawdot (i*u,j*u) shifted(t*u,0) withcolor \MPcolor{darkred}; endfor endfor endgroup enddef; def Suite (expr n, t) = begingroup numeric u; u := 5mm; pickup pencircle scaled 5pt; for i=0 upto n: drawdot(i*u,0) shifted(t*u,0) withcolor \MPcolor{blue}; endfor endgroup enddef; def cross (expr n, t) = begingroup numeric u; u := 5mm; pickup pencircle scaled 5pt; for i=-n upto n: drawdot(0,i*u) shifted(t*u,0) withcolor \MPcolor{blue}; endfor endgroup enddef; \stopMPcode __________________________________________________________ %horizontal line % big unwanted white space \starttext % \startex First exercise \startlinecorrection[blank] \startmidaligned \startcombination[1*2] {\startMPcode Suite(2,0); cross(1,1); Suite(4,4); cross(2,6); Suite(6,10); cross(3,13); \stopMPcode }{\tfx \bf Suite 1} {\startMPcode suite(0,0); suite(1,2); suite(2,5); \stopMPcode }{\tfx \bf Suite 2} \stopcombination \stopmidaligned \stoplinecorrection %\stopex \stoptext

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MP: problems with dashed lines
by Henning Hraban Ramm 22 Oct '23

22 Oct '23

Hi, I wanted to use dashed lines as folding marks, but apparently they only work with pencircle, or at least not with pensquare. The Metafun manual (Reference, C5) also shows a problem with "dashed oddly", that I can’t reproduce in this MWE: \startMPpage draw (0,0)--(100,100) withpen pencircle dashed evenly; draw (50,0)--(150,100) withpen pencircle dashed oddly; draw (100,0)--(200,100) withpen pensquare dashed evenly; % plain line, not dashed draw unitsquare scaled 100 withpen pencircle dashed oddly withcolor blue; draw unitsquare scaled 100 xshifted 50 withpen pensquare dashed evenly withcolor red; \stopMPpage Hraban

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overprinting black
by Henning Hraban Ramm 21 Oct '23

21 Oct '23

Hi, esp. Hans, while finalizing the PDF for our latest book, I recognized a color problem: The general black color is rendered not 100% black in CMYK mode, but in all channels (converted RGB, I guess). With \definecolor[cmykblack][k=1] \setupcolors[textcolor=cmykblack] this is ok, but the color mode is knockout instead of overprint (as it would be usual for CMYK black). That means, black text on a photo is white in the other plates. If I define \definecolor[cmykblack][k=1,a=multiply,t=1] \setupcolors[textcolor=cmykblack] it’s ok in some places, but it messes up many unrelated places, e.g. most images then also use this transparency mode. \setupcolors[intent=overprint] has no effect, as far as could find (while we have a warning in the wiki, that you should use this only for grayscale works). What can I do? Hraban

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