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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 04 Jan '15

04 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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Steps in presentation
by pol stra 03 Jan '15

03 Jan '15

Hello, I tried to use some steps in a presentation. In the following conversation http://www.mail-archive.com/ntg-context@ntg.nl/msg53524.html, Wolfgang says that we can use the pre-60 module. So I tried this snippet: \usemodule[pre-stepwise] \starttext \StartSteps \startitemize \item one \FlushStep \item two \FlushStep \item three \FlushStep \stopitemize \StopSteps \stoptext But it does not compile: ConTeXt ver: 2012.09.11 20:36 MKIV fmt: 2012.9.12 int: english/english system > cont-new.mkiv loaded (/opt/context-minimals/texmf-context/tex/context/base/cont-new.mkiv system > beware: some patches loaded from cont-new.mkiv ) fonts > latin modern fonts are not preloaded languages > language en is active (pre60.tex resolvers > modules > loaded: 'pre-stepwise' (/opt/context-minimals/texmf-context/tex/context/base/s-pre-60.mkiv fonts > beware: no fonts are loaded yet, using 'lm mono' in box (/opt/context-minimals/texmf-context/tex/context/base/java-imp-stp.mkiv) interactions > javascripts > loaded: library 'stp' metapost > loaded: library 'nav' (/opt/context-minimals/texmf-context/tex/context/base/meta-imp-nav.mkiv)){/opt/context-minimals/texmf-fonts/fonts/map/pdftex/context/mkiv-base.map} fonts > preloading latin modern fonts (second stage) fonts > typescripts > unknown: library 'loc' {/opt/context-minimals/texmf-fonts/fonts/map/dvips/lm/lm-math.map}{/opt/context-minimals/texmf-fonts/fonts/map/dvips/lm/lm-rm.map} fonts > virtual math > unable to resolve name mapsfromchar fonts > fallback modern rm 12pt is loaded !LuaTeX error: There should have been a lua <node> here, not an object with type string! ==> Fatal error occurred, no output PDF file produced! Is there something broken in recent release of conteXt? By the way It seems there is no Rawsteps module anymore but it still is in the wiki. Is there is something like a bugtracker for conteXt, in order to signal when a feature is not working or outdated and signal when it is back (or definitly depreciate)? (it would be a complementary tool for the mailing list)

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Re: [NTG-context] Start an itemized list with a given number
by Eric Gerard 02 Jan '15

02 Jan '15

Vielen dank für die Antwort und Ich wünsche Ihnen ein glückliches neues jahr. Thanks for the answer, it works perfectly . Happy new year to every people in the list Eric Gerard

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bug in beta from 2014.12.29 10:01
by Akira Kakuto 02 Jan '15

02 Jan '15

> $ contextjit --version > > mtxrun | unknown script 'context.lua' or 'mtx-context.lua' I have reproduced it, after some trials, by removing files in "trees" in cache. So try mtxrun --generate Best, Akira

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bug in beta from 2014.12.29 10:01
by Pablo Rodriguez 02 Jan '15

02 Jan '15

Hans, I have just updated ConTeXt Standalone to beta from 2014.12.29 10:01 and I get the following error: $ contextjit --version mtxrun | unknown script 'context.lua' or 'mtx-context.lua' I’m afraid this seems to be a bug. Many thanks for your help, Pablo -- http://www.ousia.tk

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