March 2010 - ntg-context - NTG Mailing Lists

directlua in xmlsetup
by Hans van der Meer 31 Mar '10

31 Mar '10

Just between \starttext..\stoptext the code \directlua{tex.print("{\it abc}")} works as expected and I get an italic abc. However, between \startxmlsetups..\stopxmlsetups this is different. Here the result is: {endgraf ignorespaces it abc} And leaving out one backslash before the it: {it abc} I suspect some catcode trickery here. But can this be solved easily? Or do I need to program calling of some explicite Lua-function for this? Hans van der Meer

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Line numbering in columns
by Vyatcheslav Yatskovsky 31 Mar '10

31 Mar '10

Hello, I'm just curious, why line mumbers appear mirrored (on the right side of text) in the rightmost column? \starttext \startcolumns\startlinenumbering\startlines Fly me to the moon Hit the road jack Sway Libertango Sunny Besame mucho (Em) La Bamba Hey-na-na-na Venus (Dm) El Talisman Oye Como Va Chatanooga choocho (capo II) Beautiful Agua de beber + Masquenada Kiss Me Ain't it Funny Pasadena Don’t Want To Miss A Thing (capo II) Old Devil Moon (capo II) Got My Mind Set On You Baila Morena \stoplines\stoplinenumbering\stopcolumns \stoptext Another question is options of linenumbering command. Context 2006.03.20 introduced "A few extra options for \startlinenumbering", but texshow show only [continue] option. Vyatcheslav

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Multiple bibliographies (bib-module, mkiv)
by marfin 31 Mar '10

31 Mar '10

Hello, I need two bibliographies for my document, »Primary sources« and »Secondary sources«. So two bibliographies was created and loaded with \setupbibtex[database={prim,sec}]. But for the last step in my intention I’m looking for something to the effect that \placepublications[database=prim] or in a similar manner to \nocite{*} for every bib-database. Is there any solution or workaround? Thanks Markus

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Hanging indent in startstoplines for poems
by Torsten Suhling 31 Mar '10

31 Mar '10

Hello, I have a question regarding hanging indentation in startstoplines-environment. So I try to use ConTeXt to typeset poems. In some texts/poems ar long lines, which have to be broken. They should be broken into hanging indentations. That means: Every line of poem should start left. If a poemline is longer than text width, the rest of this line should be indented in a new text line. (just like here) The width of this indentation should be fixed (e.g. 3em). The width of this indentation shouldn't depend on a word. It would be fine, if I don't have to set (poem)linebreaks. Additionally, it should still be able to indent a verse (e.g. a chorus), for instance using narrower. Hyphenation should be switched off inside the poems. So I found \setuphanging, but these instruction seems made another job---indenting a paragraph to be placed right beside the first words of the paragraph. That's the example, which does not work (all lines are indented) %<-------------- snip --------------------------------------- \definestartstop[verse] [command={\setupwhitespace[1.2em]}% % follow the grid ,before={\setupindenting[-2em,yes]% % trial to construct \startnarrower[2em]% % hanging indent \startalignment[flushleft]% % even inter-word-dist. \startlines% % no justification \indenting[first]}% ,after={\stoplines% \stopalignment% \stopnarrower% \endgraf}] \starttext Three lines, first should be broken: \startverse FIRST---this should be one line, please remove linebreaks made by the mail programms or similiar possibly until HERE. SECOND---next line without carriage return or line feed, THIRD---because startstoplines accept linebreaks. FOURTH---is also one who don't make much words. \stopverse \stoptext %<-------------- snap --------------------------------------- Any idea how to do that? Thanks for help Torsten

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ggplot2: Adding points to a density plot
by Johannes Graumann 31 Mar '10

31 Mar '10

Hi, Consider something like > library(ggplot2) > movies$decade <- round_any(movies$year, 10) > m <- qplot(rating,data=movies,colour=factor(decade),geom="density") > m (modified from "?stat_density"). I'd like to add on the line y=0 a dot for the median of each "decade" category (using the same colour coding as the "fill"). I'm failing miserably at all my > m + geom_point based approaches and would appreciate if someone could show me the ggplot2 way of achieving this. Thanks, Joh

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arguments to ctxlua
by Hans van der Meer 30 Mar '10

30 Mar '10

When I have a Lua function with 2 arguments: \startluacode function f(a,b) ... \stopluacode called through: \def\callf#1#2{\ctxlua{f("#1","#2")}} and do this actually with one argument: \callf{one} then I find that the absent argument b in f(a,b) is not nil but a string of length 1. That is a bit of a nuisance because I would like to use the Lua idiom: function f(a,b) local b = b or default but that is frustrated by the behaviour shown. Is this an artifact of either luatex or ConTeXt? Can it be avoided such that in this case b will be nil? Hans van der Meer

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Beta 2010.03.30: mkiv and \dots
by Otared Kavian 30 Mar '10

30 Mar '10

Hi Hans, Thanks for fixing so quickly the issue with the release 2010.03.29. Now with the latest release, that is ConTeXt ver: 2010.03.30 12:47 MKIV fmt: 2010.3.30 int: english/english there is an issue with \dots: mkiv considers that this should be in mathmode, while until yesterday it didn't complain at all. Minimal example: %%%%%%% \starttext Hello Hans\dots \stoptext %%%%%%% ConTeXt complains and stops by saying: ! Math error: parameter \Umathquad\displaystyle is not set. \dots ...else $\mathsurround \zeropoint \ldots \,$ \fi The same example works fine with mkii. Thanks again for your attention: OK

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beta: math problem (mkiv)
by Peter Rolf 30 Mar '10

30 Mar '10

Hi, I just tried the latest beta and run into this error... [..] (C:/tmp/context/tex/texmf-context/tex/context/user/cont-sys.rme (C:/tmp/context/ tex/texmf-context/tex/context/base/type-def.mkiv) (C:/tmp/context/tex/texmf-cont ext/tex/context/base/type-lua.tex) (C:/tmp/context/tex/texmf-context/tex/context /base/type-siz.tex (C:/tmp/context/tex/texmf-context/tex/context/base/type-siz.m kiv)) (C:/tmp/context/tex/texmf-context/tex/context/base/type-otf.tex (C:/tmp/co ntext/tex/texmf-context/tex/context/base/type-otf.mkiv))) system : math.top loaded (math.top) fonts : preloading latin modern fonts !fonts : goodie file 'lm-math.lfg' is not found !define font : font with name LMMath7-Regular is not found !define font : unknown font LMMath7-Regular, loading aborted !define font : unable to define LMMath7-Regular as \*modern7ptmmmr33* !define font : font with name LMMath9-Regular is not found !define font : unknown font LMMath9-Regular, loading aborted !define font : unable to define LMMath9-Regular as \*modern9ptmmmr22* !define font : font with name LMMath12-Regular is not found !define font : unknown font LMMath12-Regular, loading aborted !define font : unable to define LMMath12-Regular as \*modern12ptmmmr11* bodyfont : 12pt rm is loaded language : language en is active {C:/tmp/context/tex/texmf-context/fonts/map/pdftex/context/mkiv-base.map} systems : begin file math at line 1 ! Math error: parameter \Umathquad\displaystyle is not set. l.3 $\downarrow$ ? test is simply \starttext $\downarrow$ \stoptext Peter

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luacode inside xmlsetups
by Hans van der Meer 30 Mar '10

30 Mar '10

The following works outside xmlsetups but not inside it. It seems to bolt on the % with: ! LuaTeX error <main ctx instance>:1: ')' expected near '<eof>'. <inserted text> ....pitex.print("pi = " .. (x - x} This in spite of the wiki telling me: To circumvent this problem, ConTeXt defines a environment called \startluacode ... \stopluacode. This sets the catcodes to what one would expect in lua. Basically only \ has its usual TeX meaning, the catcode of everything else is set to other. So, for all practical purposes, we can forget about catcodes inside \startluacode ... \stopluacode. The code is: \startxmlsetups xml:mycommand \startluacode local x = math.pi tex.print("pi = " .. (x - x\%0.01)) \stopluacode \stopxmlsetups When I try to escape the % with \% the result is no better: ! LuaTeX error <main ctx instance>:1: ')' expected near '\'. <inserted text> ...rint("pi = " .. (x - x\%0.01))} Is it not possible to directly use Lua inside these setups? If do, why the nonconforming behaviour? Hans van der Meer

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'#' sign in hyphenatedurl
by Vyatcheslav Yatskovsky 30 Mar '10

30 Mar '10

Hello, I noticed that in \hyphenatedurl the '#' sign should be escaped, otherwise strange result occurs. \startext \hyphenatedurl{http://en.wikipedia.org/wiki/Differential_algebraic_equation#Numerical_solution_of_DAEs} \hyphenatedurl{http://en.wikipedia.org/wiki/Differential_algebraic_equation\#Numerical_solution_of_DAEs} \stoptext is it intended to be so? Vyatcheslav

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