April 2019 - ntg-context - NTG Mailing Lists

Text around a figure
by Fabrice Couvreur 24 Apr '19

24 Apr '19

Hi, Why does bold text touch the figure ? Thank you. Fabrice \definefloat [recipe] [figure] \setupfloat [recipe] [default={right,none}] \starttext \placerecipe{}{ \setupbodyfont[8pt,pagella] \startMPcode path p, q ; p:= unitsquare xyscaled (1.5cm,1.5cm) ; q:= unitsquare xyscaled (2.5cm,2.5cm) shifted (1.5cm,0); draw p withpen pencircle scaled 1pt ; draw q withpen pencircle scaled 1pt ; label.llft("$A$", p) ; label.lrt("$M$", p) ; label.ulft("$P$", p) ; label.urt("$N$", p) ; label.lrt("$B$", q) ; label.urt("$Q$", q) ; label.ulft("$R$", q) ; \stopMPcode } Sur la figure ci-contre, \m{[AB]} est un segment de longueur 4. \m{M} est un point mobile sur le segment \m{[AB]} . \m{AMNP} et \m{MBQR} sont deux carrés. On note \m{x} la distance \m{AM}. \blank {\bf On cherche les positions de \m{M} telles que la surface constituée par les deux carrés soit supérieure à 10.} \blank \startitemize[n] \item À quel intervalle appartient \m{x} ? \item Montrer que le problème revient à résoudre l'inéquation : \startformula 2x²-8x+6\geqslant 0. \stopformula \item Développer le produit \m{(2x-6)(x-1)}. \item En déduire les solutions de l'inéquation \m{2x²-8x+6\geqslant 0} et conclure concernant le problème. \stopitemize \stoptext

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Formula number misplaced
by Henri Menke 24 Apr '19

24 Apr '19

Dear list, The problem I describe does not make itself apparent in all situations, but sometimes the formula number, which is placed by \start...\stopplaceformula, is misplaced and there appears a gap between it and the right margin. The MWE below reproduces the problem in the latest beta and lmtx. It can be "fixed", however, by replacing \start...\stopTEXpage by \start...\stoptext, so this might not represent the most generic incarnation. Cheers, Henri --- \startTEXpage \samplefile{ward} Thus \startplaceformula \startformula \int_a^b f(x) \, \diff x = F(b) - F(a) . \stopformula \stopplaceformula \stopTEXpage

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preparing math exams
by Gour 24 Apr '19

24 Apr '19

Hello, I wonder what would be recommended way to prepare math exams for primary school (e.g. 5th to 8th grade) which involves drawing lines, segments, angles, polygons, circles, drawing functions etc.? For regular formulas involving e.g. rational numbers, I'm sure that input language for math is quite sufficient, but wonder about drawing part? Sincerely, Gour -- A person who is not disturbed by the incessant flow of desires — that enter like rivers into the ocean, which is ever being filled but is always still — can alone achieve peace, and not the man who strives to satisfy such desires.

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Re: [NTG-context] Move footnotes without moving the footnotes-reference
by Huseyin Özoguz 24 Apr '19

24 Apr '19

Hello, is this maybe not possible with activated grid? Or is my question just not clear: > \setuplayout[grid=yes] > \showgrid > \starttext > \dorecurse{779}{test }\footnote{Just a footnote. Wants to stay on this > page without forcing the last line of the first page to move on this > page (the 41rd line of the first page is now empty, but it should not). > So the reference of the footnote and the foonote itself would be on > different pages, but that would be ok. Is that possible?} > \stoptext > Thanks. -- Huseyin Özoguz E-Mail: h.oezoguz(a)mmnetz.de

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mathalign: specifying distance with glue
by Aditya Mahajan 24 Apr '19

24 Apr '19

Hi, amsmath provides an environment `flalign` that flushes the "block" for display math. See page 6 (pdf page 27) of my article on display math in context (https://www.ntg.nl/maps/34/06.pdf) for an example. As shown in that article, I could achieve the same behavior in context mathalign by using distance=2em plus 1fil. However, on a recent context, the glue gets ignored. \starttext \startformula \startmathalignment[m=2,distance=2em plus 1 filll]%Notice distance=... \NC \nabla\cdot \bf E \NC= \frac{\rho}{\varepsilon_0}, \NC \nabla\times \bf E \NC= -\frac{\partial \bf B}{\partial t}, \NR \NC \nabla\cdot \bf B \NC= 0, \NC \nabla\times \bf B \NC= \mu_0{\bf j}+\varepsilon_0\mu_0 \frac{\partial \bf E}{\partial t}. \NR \stopmathalignment \stopformula \stoptext Looking at math-ali, I cannot figure out why that is happening. Aditya

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Text on curves
by Keith McKay 23 Apr '19

23 Apr '19

I have been trying to typeset text onto curves and have been successful with the help of the MetaFun manual, and the followtext command which I saw in some correspondence between dr Hans van der Meer and Hans Hagen on the mailing list in January this year ( the subject was Double Follow Tokens). The followtext command seems to used for a simple line of text and if I increase the number of words in the line the font size is reduced to make it fit to the length of the curve (see MWE below). I would like to typeset complete paragraphs on the curve(s) and the only way I see of doing this without the font size changing is to manually create each line separately. Is their a way where this can be done by MetaFun automatically rather than manually? It would be really nice if I could create a number of curves and then MetaFun typsets a paragraph of text on to them. Also, can other options be used with followtext e.g. \input file? I'm a complete novice with MetaFun so any advice appreciated. Best Wishes Keith McKay ----Minimum Working Example---- \starttext Two different lengths of text on the same curve showing font size being reduced. \blank \startMPcode path q; q := function (1, "x", "sin(2x)" , 1, 10, .01) scaled 1.5cm ; draw followtext(q, "some text but not that long. But here and there and everywhere the text can become longer"); draw followtext (q shifted (0cm,-2cm), "some text but not that long. But here and there and everywhere the text can become longer and longer and longer finally ending here."); \stopMPcode Some other examples of text on a curve \blank \startMPcode path p; p := reverse halfcircle xyscaled 55mm ; draw followtext(p, "some text but not that long"); \stopMPcode nice spiral shape with text \startMPcode z0 = (0,0); z1 = (60,40); z2 = (40,90); z3 = (10,70); z4 = (30,50); path p; p = (z0..z1..z2..z3..z4) ; draw followtext(p scaled 1mm, "some text but not that long. But here and there and everywhere the text can become longer"); \stopMPcode \stoptext

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Error concerning "pdfmapline"
by Rudolf Bahr 23 Apr '19

23 Apr '19

Hello All! Using: LuaMetaTeX, Version 2.00.0 ConTeXt ver: 2019.04.13 17:25 MKIV beta fmt: 2019.4.15 with following MWE: -------------------------------------------------- \pdfmapline {yfrak <yfrak.pfb} \definefont [ToggenburgFont][yfrak at 10pt] [.75] \starttext %\ToggenburgFont Hallo! Maar had ik dit kunnen weten? \stoptext -------------------------------------------------- I'm getting now following errors: fatal error > unsupported cs \pdfmapline mtx-context | fatal error: return code: 256 I'm using the above "\pdfmapline" command since years. Now it gives an error even when it isn't used in the text. "yfrak.pfb" is in the same directory. Are there any hints, please? Rudolf

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Strange behavior with offset key in a xtable
by Fabrice Couvreur 22 Apr '19

22 Apr '19

Hi, Why is the height of the cells of the third line different ? Thank you. Fabrice \starttext \startxtable[align={lohi,middle},offset=0.8ex,width=3cm] \startxrow \startxcell \m{x} \stopxcell \startxcell[nx=3] \math{-\infty} \hfill \math{+\infty} \stopxcell \stopxrow \startxrow \startxcell Signe de \m{3x-6} \stopxcell \startxcell \unknown \stopxcell \startxcell \unknown \stopxcell \startxcell \unknown \stopxcell \stopxrow \startxrow \startxcell Signe de \m{-2x+8} \stopxcell \startxcell \unknown \stopxcell \startxcell \unknown \stopxcell \startxcell \unknown \stopxcell \stopxrow \startxrow \startxcell[width=6cm] Signe de \m{(3x-6)(-2x+8)} \stopxcell \startxcell \unknown \stopxcell \startxcell \unknown \stopxcell \startxcell \unknown \stopxcell \stopxrow \stopxtable \stoptext

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Processing XML: Header and footer, data manipulation
by Axel Kielhorn 22 Apr '19

22 Apr '19

Hello, Pablo Rodríguez wrote in „From pandoc to ConTeXt“: „So, if I was able to do this, probably anybody can do it.“ Well, I tried and indeed it isn’t as difficult as i thought. (Once I learned that an entity must not contain non-ASCII characters.) Some questions remain: I want to set page headers based on information I get from the XML: \startxmlsetups xml:prozess \mainlanguage[de] \setupheadertexts[\bf\xmltext{#1}{/pnr} \xmltext{#1}{/pname}][\date] {\bTABLE \setupTABLE[frame=off] \setupTABLE[offset=1mm] \setupTABLE[c][1][align=right, width=14cm] \setupTABLE[c][2][align=left, width=6cm] \setupTABLE[c][3][align=right, width=4cm] \bTR \bTD \bfb\xmltext{#1}{/pnr} \eTD \bTD Version: \eTD \bTD \bf\xmltext{#1}{/pversion}\eTD \eTR \bTR \bTD \bfb\xmltext{#1}{/pname} \eTD \bTD Verantwortlich: \eTD \bTD \bf\xmltext{#1}{/pverantwortlich}\eTD\eTR \eTABLE} \blank \xmlflush{#1} \stopxmlsetups This works on the first page (when the document has more than one page) but headers and footers are empty on subsequent pages. Something (xmlflush?) overwrites my setup. Any idea how I can fix that? I want to use xmlconcat here, since there may be more than one docan, but I only get the „, “ \startxmlsetups xml:psoutdoc % \inmargin{\xmltext{#1}{/docan} $\Leftarrow$} {\bf \xmltext{#1}{/docnr}}\xmlflush{#1} \inmargin{\xmlconcat{#1}{/docan}{, } $\Leftarrow$} {\bf \xmltext{#1}{/docnr}}\xmlflush{#1} \xmlsave{#1}{outfile.xml} \blank \stopxmlsetups I want to write the nodes psindoc and psoutdoc to a separate file. \xmlsave overwrites the file, is there a way to append to the file? (or append to a buffer and write the buffer?) \startxmlsetups xml:psindoc \inmargin{\xmltext{#1}{/docverantwortlich} $\Rightarrow$} {\bf \xmltext{#1}{/docnr}}\xmlflush{#1} \xmlsave{#1}{outfile.xml} \blank \stopxmlsetups Can I add child notes to #1? The last two questions probably require LUA, what is a good way to start learning LuaTeX? I enclosed a small test file. Greetings Axel PS: This may result in an article for „Die TeXnische Komödie“.

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\abovedisplayshortskip
by Mikael P. Sundqvist 22 Apr '19

22 Apr '19

Hi, is \abovedisplayshortskip inserted in formulas that come after short lines? Or is there a more ConTeXt-way to tune this? Small example file below, but I see no change after I set it, so I guess it is not used? /Mikael \starttext Foo \startformula 1+1=2 \stopformula \abovedisplayshortskip = -12pt Foo \startformula 1+1=2 \stopformula \stoptext

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