January 2015 - ntg-context - NTG Mailing Lists

Re: [NTG-context] Define a new command from the command \periods[n]
by Couvreur Fabrice 06 Jan '15

06 Jan '15

Hi Alan, What should I include ? Fabrice Envoyé de mon iPad

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Re: [NTG-context] Define a new command from the command \periods[n]
by Couvreur Fabrice 06 Jan '15

06 Jan '15

I am impressed ! Best regards, Fabriçe Envoyé de mon iPad

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Nested \startitemize[columns] breaks tagging
by Christoph Reller 06 Jan '15

06 Jan '15

Hi, Another MWE that breaks tagging: \setuptagging[state=start] \starttext \startchapter[title=Chapter] \startitemize \item Text \startitemize[columns] \item Text \stopitemize \stopitemize \stopchapter \startchapter[title=Next Chapter] Text \stopchapter \stoptext This time the structure tree is affected. The resulting tree (roughly) is the following: /document /section (chapter) /sectionnumber 1 /sectiontitle Chapter /sectioncontent /itemgroup (itemize) /item /itemtag/math/mrow/mo • /itemcontent Text /itemgroup (itemize) /itemgroup (itemize) /item /itemtag/math/mrow/mo − /itemcontent Text /section (chapter) /sectionnumber 2 /sectiontitle Next Chapter /sectioncontent Text Note that the second chapter is located within the first chapter. I hope that this can be fixed easily. Thank you for any effort, Christoph

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Re: [NTG-context] Footnote breaks tagging
by Christoph Reller 06 Jan '15

06 Jan '15

On 31/12/2014 09:18:24 +0100, Hans Hagen wrote: > > On 12/29/2014 3:38 PM, Christoph Reller wrote: > > Hi, > > > > ConTeXt mkiv is the only TeX-based typesetting system that can produce > > tagged PDFs and this is a really useful feature. Unfortunately, > > footnotes seem to upset tagging. MWE: > > should be better now > Thank you very much, Hans. This bug is fixed.

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Re: [NTG-context] plot data from file: cld
by John Kitzmiller 05 Jan '15

05 Jan '15

On Jan 5, 2015, at 5:51 AM, Hans Hagen <pragmz(a)wxs.nl <mailto:pragmz@wxs.nl>> wrote: >> On 1/4/2015 6:04 AM, Akira Kakuto wrote: >> Dear John, >> >>> How to make this a polygon? >> >> An example: >> >> \starttext >> \startluacode >> local metafun = context.metafun >> metafun.start() >> io.input("DATA") >> local i, j >> local x, y, s, t1, t2 >> i = 1 >> x={} >> y={} >> s="draw " >> while true do >> x[i], y[i] = io.read("*n", "*n") >> if not x[i] then break end >> metafun("filldraw fullcircle scaled 2mm shifted(%dcm,%dcm);",x[i],y[i]) >> i = i + 1 >> end >> i = i - 1 >> for j = 1, i do >> t1 = tostring(x[j]) >> t2 = tostring(y[j]) >> s = s.."("..t1.."cm,"..t2.."cm)--" >> end >> t1 = tostring(x[1]) >> t2 = tostring(y[1]) >> s = s.."("..t1.."cm,"..t2.."cm)" >> s = s.." withpen pencircle scaled 1bp;" >> metafun(s) >> metafun.stop() >> \stopluacode >> \stoptext > > Here is a bit more compact version. A path can normally nicely be concat > using "--" or ".." and we have a metafun helper drawpoints. > > \starttext > \startluacode > context.metafun.start() > local split = utilities.parsers.csvsplitter { separator = " " } > local data = split(io.loaddata("data.txt")) > for i=1,#data do > data[i] = string.formatters["(%s,%s)"](unpack(data[i])) > end > context.metafun("path p ; p := (%s -- cycle) scaled cm > ;",table.concat(data,"--")) > context.metafun("draw p withpen pencircle scaled 0.25mm ;") > context.metafun("drawpoints p withpen pencircle scaled 2.00mm ;") > context.metafun.stop() > \stopluacode > \stoptext Thank you Hans. A few tools new to me in there! I am wondering (and will try to find) if multiple paths could be contained in the external file— a marker and test structure? Thanks again, John

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Maximum width of a caption
by Mojca Miklavec 05 Jan '15

05 Jan '15

Hi, Is there any way to set the maximum width of a caption? I would like to make sure that no figure caption exceeds, say, 75% of text width. Here's an example of "bad behaviour" in the second figure: \starttext \reservefigure [width=5cm,height=2cm,frame=on][force] {Some very small figure with not too much text: OK} \input tufte This can hardly be distinguished from the main text: \reservefigure [width=\textwidth,height=.2\textwidth,frame=on][force] {\input tufte} \input tufte Desired behaviour: \placefigure[force]{\input tufte} {\hbox to .75\textwidth{\hss\framed[width=\textwidth,height=.2\textwidth]{}\hss}} \input tufte \stoptext I've seen an option maxwidth, but only in connection to \externalfigure[...][maxwidth=...]. I can cheat as on the third figure above, but that seems like an ugly approach to me. Thank you, Mojca

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Re: [NTG-context] plot data from file: cld
by John Kitzmiller 04 Jan '15

04 Jan '15

On Jan 4, 2015, at 6:00 AM, ntg-context-request(a)ntg.nl wrote: > Dear John, > >> How to make this a polygon? > > An example: Many thanks to you Akira. Reading the file into lua tables is good sense, and thank you for the string manipulations to pass to metafun(). From your teaching I changed this assignment: > t1 = tostring(x[1]) > t2 = tostring(y[1]) > s = s.."("..t1.."cm,"..t2.."cm)" > s = s.." withpen pencircle scaled 1bp;" to: s = s.."cycle withpen pencircle scaled 1bp;” to close the polygon. With respect, John

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plot data from file: cld
by Akira Kakuto 04 Jan '15

04 Jan '15

Dear John, > How to make this a polygon? An example: \starttext \startluacode local metafun = context.metafun metafun.start() io.input("DATA") local i, j local x, y, s, t1, t2 i = 1 x={} y={} s="draw " while true do x[i], y[i] = io.read("*n", "*n") if not x[i] then break end metafun("filldraw fullcircle scaled 2mm shifted(%dcm,%dcm);",x[i],y[i]) i = i + 1 end i = i - 1 for j = 1, i do t1 = tostring(x[j]) t2 = tostring(y[j]) s = s.."("..t1.."cm,"..t2.."cm)--" end t1 = tostring(x[1]) t2 = tostring(y[1]) s = s.."("..t1.."cm,"..t2.."cm)" s = s.." withpen pencircle scaled 1bp;" metafun(s) metafun.stop() \stopluacode \stoptext Best, Akira

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plot data from file: cld
by John Kitzmiller 03 Jan '15

03 Jan '15

I seek how to use context-lua to draw a path from ‘points’ in an external file. Below is one way to plot points from an external file, call the file DATA with contents: 1 3 -2 2 -3 -1 3 -2 \starttext \startluacode local metafun = context.metafun metafun.start() io.input(“DATA") while true do local x, y = io.read("*n", "*n") if not x then break end metafun("filldraw fullcircle scaled 2mm shifted(%dcm,%dcm);",x,y) end metafun.stop() \stopluacode \stoptext How to make this a polygon? I know other ways to read and manipulate DATA with Lua—it is the drawing part where I most look for help. Thanks, John

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Re: [NTG-context] Steps in presentation
by Jeong Dal 03 Jan '15

03 Jan '15

Dear Fabrice, The following code is working in my mac. I tried your first code and it is working after adding \setupinteraction[]. Since I didn’t use ‘rsteps’ module, I could’t test the second code. My ConTeXt version is as following. ConTeXt ver: 2014.12.21 22:25 MKIV beta fmt: 2014.12.26 int: english/english \setupinteraction[state=start] \setupcolors[state=start] \usemodule[pre-60] \setuppapersize[S4][S4] \starttext \StartSteps \startformula \startalign \NC x^2 + y^2 \NC = z^2 \NR \FlushStep \NC x^2 + y^2 \NC = z^2 \NR \FlushStep \stopalign\stopformula \StopSteps \stoptext I hope that this helps. Best regards, Dalyoung

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