June 2022 - ntg-context - NTG Mailing Lists

local footnotes and captions
by denis.maier＠unibe.ch 16 Jun '22

16 Jun '22

Hi, another experiment with footnotes in captions, this time local footnotes : %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \setupcaptions[location=top] \starttext \startlocalfootnotes \placetable % The caption {A breakfast table.\footnote{asdf}} % the table \placelegend {\starttable[|l|r|] \HL \VL Spam \footnote {lovely} \VL Bacon \footnote {wonderful} \VL\FR \VL Eggs \footnote {wonderful} \VL Spam \footnote {lovely} \VL\LR \HL \stoptable} % the footnotes {\placelocalfootnotes} \stoplocalfootnotes \stoptext %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Two observations : 1. the footnote numbering is a bit odd, shouldn't the footnote in the caption be numbered with 1? 2. The footnote in the caption is not included in the local footnotes. Why is that? Denis

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Foonotes in Captions ... again
by denis.maier＠unibe.ch 16 Jun '22

16 Jun '22

Hi everyone What's the current state of affairs regarding footnotes in floats? Both version in the example below don't quite work... (Ideally, the note should be on the page with the float and the caption, but the numbering should also be adjusted.) Best, Denis \starttext \footnote{asdf} \footnote{asdf} \footnote{asdf} \input ward \startplacefigure[title={asdfasdf\footnote{test 1}}] \externalfigure[cow.pdf] \stopplacefigure \footnote{asdf} \footnote{asdf} \footnote{asdf} \startplacefigure[title={asdfasdf\footnote{test 2}}] \externalfigure[cow.pdf][height=10cm] \stopplacefigure \footnote{asdf} \footnote{asdf} \footnote{asdf} \page \footnote{asdf} \footnote{asdf} \footnote{asdf} \input ward \startplacefigure[title={asdfasdf\footnote{test 1}}] \externalfigure[cow.pdf] \stopplacefigure \footnote{asdf} \footnote{asdf} \footnote{asdf} \startpostponingnotes \startplacefigure[title={asdfasdf\footnote{test 2}}] \externalfigure[cow.pdf][height=10cm] \stopplacefigure \stoppostponingnotes \footnote{asdf} \footnote{asdf} \footnote{asdf} \stoptext

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Footnotes in captions -> "inherit" textwidth from float
by denis.maier＠unibe.ch 16 Jun '22

16 Jun '22

Hi, I think I've ran into a somewhat strange behaviour. If you have a footnote in a float caption, the footnote won't use the full textwidth, but only the width of the corresponding caption. Is that on purpose, a context bug or a user bug? Best, Denis \starttext asdf \startplacefigure[title={My caption with a long footnote.\footnote{\input ward}}] \externalfigure[cow.pdf] \stopplacefigure \stoptext

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Why are some images rendered very tiny?
by Joel 15 Jun '22

15 Jun '22

I wrote this macro to display images in my book. It should place the image to the left, filling ~50% of \textwidth, then the caption is to the right. \setupcaption[location=right, minwidth=.5\textwidth] \define[4]\figureis{% \placefigure{#2, Courtesy #3, photo no. #1\nocite[#4]{}}{\externalfigure[#1][maxheight=.7\paperheight, maxwidth=.5\paperwidth, minwidth=.5\paperwidth]} } #1 = filename, other variables are used for reference/credit details. The problem is, somehow some images are inexplicably displayed very tiny on the page. I check the image file and they are not small, but somehow is rendered small with the code above. What is wrong in my code? --Joel

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Rotating jpeg image gives weird output
by denis.maier＠unibe.ch 15 Jun '22

15 Jun '22

Hi, I have a jpeg image that drives me crazy. The scanned image I have received from the author is in landscape. So, I've rotated the image, but now two things happen: 1. there's a weird offset (the image is moved to the right) 2. The output contains this line . location=local,global. location=local,global I'm not quite quite sure how I can produce a MWE that shows the problem, but has anyone ever seen something like this? Does anyone know what that < . location=local,global. location=local,global > stuff means? Best, Denis P.S: I've performed the rotations using the standard picture editor on Windows and with GIMP. Happens with both tools.l P.S.S.: This seems to be somehow related to the particular file. With a different file that does not happen.

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Table of Contents empty for unknown reason
by Joel 14 Jun '22

14 Jun '22

I need to display a table of contents, but only displaying chapters. Here is my minimum working example: \starttext \startfrontmatter \startchapter[title={Contents}] \placelist[chapter] \stopchapter \completecontent \stopfrontmatter \startbodymatter \startchapter[title={Title 1}] \input knuth \stopchapter \stopbodymatter \stoptext For reasons I don't understand, both \placelist[chapter] and \completecontent display the title, but are otherwise empty of contents. I believe the code was working before an update. I used ConTeXt live though and confirmed this code even doesn't work there. Why isn't it rendering the table of contents? --Joel

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Problems with MetaFun Transparency Groups
by Stefan Haller 14 Jun '22

14 Jun '22

Hi everyone! I have a question regarding transparency groups in MetaFun. As a toy example, I want to draw a grid of lines where the whole grid should have an opacity of 25%. If I draw intersecting lines individually with `withtransparency(1, .25)` the overlapping parts will have a total opacity of 50%. However, I want to draw the whole grid as one group and then blend it as a whole so that the whole grid is evenly colored when blended. According to the MetaFun manual we should be able to get the desired effect with the `asgroup` operator applied to a picture. (Actually, the manual says the operator is called `grouped` but the source code of the graphics above uses the `asgroup` operator [1].) The `asgroup` does in fact insert a transparency group into the PDF output: > << /Type /XObject /Subtype /Form /FormType 1 /Group << /S /Transparency /I false /K false However, the group does not seem to be blended as one group and we can still see that the overlapping parts are darker than the other parts of the line. Something seems to be off. Looking at the compiled manual also shows that the transparency groups are not working (both parts of the arrow, the head and the tail, are blended independently and not as a group). When I recreate the graphics in Tikz/PGF everything works. The resulting PDF output looks similar, at least with my limited understanding of PDF format I am unable to understand the differences. The full example is attached below the text of my mail. The Tikz example on the fifth page shows the desired result. Do I misunderstand the syntax of transparency groups in MetaFun? Or is there some other problem? Maybe someone can point me in the right direction. Thanks in advance! Stefan Haller [1]: https://source.contextgarden.net/doc/context/sources/general/manuals/metafu… \nopdfcompression \usemodule[tikz] \starttext \startMPdefinitions vardef draw_grid = def withmycolor = withcolor red withtransparency(normaltransparent, .25) enddef; linecap := butt; u := 10mm; n := 20; pickup pencircle scaled 7mm; for i = 1 upto n: draw (0, i) * u -- (n+1, i) * u withmycolor; draw (i, 0) * u -- (i, n+1) * u withmycolor; endfor; enddef; \stopMPdefinitions \startMPpage draw image( draw_grid ) asgroup ""; addbackground withcolor yellow; \stopMPpage \startMPpage draw image( draw_grid ) asgroup "isolated"; addbackground withcolor yellow; \stopMPpage \startMPpage draw image( draw_grid ) asgroup "knockout"; addbackground withcolor yellow; \stopMPpage \startMPpage draw image( draw_grid ) asgroup "isolated,knockout"; addbackground withcolor yellow; \stopMPpage \startTEXpage \starttikzpicture \fill[yellow] (-0.35cm, -0.35cm) rectangle (21.35cm, 21.35cm); \startscope[opacity=.25, transparency group] \startscope[x=10mm, y=10mm, every path/.style={line width=7mm}] \foreach \i in {1,...,20}{ \draw[red] (0, \i) -- (21, \i); \draw[red] (\i, 0) -- (\i, 21); }; \stopscope \stopscope \stoptikzpicture \stopTEXpage

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small fontsize and \definecolumnsetspan cause columns to jump (bug?)
by a badin 12 Jun '22

12 Jun '22

Hi, if the fontsize is smaller than ~11pt and there is \startcolumnsetspan used, then the two first lines of the second column are not aligned to the grid (they jump). Making the font bigger, or deleting the \startcolumnsetspan can both fix the problem. It seems like a bug to me, but maybe I'm doing something wrong. Any idea about how to align all the lines in this specific table? I'm using it in a whole chapter in a small book with poems and on a small format the jump is visible. \showgrid \setupbodyfont[10pt] %\setupbodyfont[12pt] % works ok \setuppapersize[A8] % just to make this visible \setuplayout[grid=yes] \definecolumnset[example2][n=6, width=20mm] \definecolumnsetspan[title][n=6] \starttext \startcolumnset[example2] \startcolumnsetspan[title] Jumpy table \blank[line] \stopcolumnsetspan \input ward \stoptext Andrej

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How to define a section title, after the section title appears?
by Joel 12 Jun '22

12 Jun '22

I have a document with conditionally-generated content. There are some situations when I need the section title to change according to the content displayed within that section. For instance, the 14th section that appears in *every* chapter is either called "Cause and Effect" if the conditions decide to place macros \altMa, \altMb, or \altMc inside, but becomes called "Compare and Contrast" if one of a dozen other macros are pladed there. - The macros are defined in an entirely different macros.tex file. - The whole document is in a recurse loop, so \recurselevel or \chaptertitleis can give the current chapter number. I tried defining chapter titles inside the macros, `\setvalue{title\recurselevel}{Cause and Effect}`, but \getvalue{title\recurselevel}` couldn't find the defined value. I tried just defining in each macro \define\thesectiontitleis{Compare and Contrast}, but that only affects things AFTER the macro is called, so the wrong titles appear. How do I very simply make a section title change according to what content is inside it? --Joel

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Importing pdf into MPpage
by Stefan Nedeljkovic 11 Jun '22

11 Jun '22

Dear list, I would like to place a pdf file at (0, 0), centered at original size on a MPpage, and draw over it. But using the input command doesn't work. How should I approach this? Sincerely, Stefan

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