October 2012 - ntg-context - NTG Mailing Lists

\dorecurse within TABLE
by Alan BRASLAU 26 Oct '12

26 Oct '12

Does anyone have a solution to \dorecurse within TABLE? Alan Minimal example: \starttext \dorecurse{8}{\recurselevel\crlf} \bTABLE \dorecurse{8}{\bTR\bTD\recurselevel\eTD\eTR} \eTABLE \stoptext

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Re: [NTG-context] using variable for subscript in math+lua
by Jeong Dal 26 Oct '12

26 Oct '12

Thanks to all who gave a nice solutions. To write a big matrix of unknowns A=(a_{ij}) is not a frequent case. In math, there are many occasions to write matrices which need some typing work like \NC 2 \NC 3 \NC 4 \NR So if we have a function which write a matrix when the data is given as a form of table in Lua. There are other benefits. Sometimes, we may have to write a series matrices which are the results of the some row operations in matrix. We can also handle it conveniently because we can do some calculations in Lua. If there is a way to convey some table data from ConTeXt to Lua, it would be more convenient. Here is an example which I did by your help. I hope that you experts can make it more useful. Thank you again. Best regards, Dalyoung \starttext \startluacode matrixfunction = matrixfunction or {} -- recommended: use namespace matrixfunction.print_matrixA = function () context.startmatrix{left = "\\left(\\,", right = "\\,\\right)"} local schema1 = "a_{%d%d}" -- %d: prints integer part local schema2 = "a_{%d%s}" local schema3 = "a_{%s%d}" for i=1, 3 do for j=1, 3 do context.NC() context(schema1, i, j) end context.NC() context("\\cdots") context.NC() context(schema2, i, "n") context.NR() end for j = 1, 3 do context.NC() context("\\vdots") end context.NC() context("\\ddots") context.NC() context("\\vdots") context.NR() for i=1, 3 do context.NC() context(schema3, "m", i) end context.NC() context("\\cdots") context.NC() context("a_{mn}") context.NR() context.stopmatrix() end matrixfunction.print_matrix = function (t) context.startmatrix{left = "\\left(\\,", right = "\\,\\right)"} for _, r in ipairs(t) do for _, c in ipairs(r) do context.NC(c) end context.NR() end context.stopmatrix() end matrixfunction.rowChange = function(t, i, j) -- interchange two rows(i-th, j-th) t[i] , t[j]= t[j], t[i] end matrixfunction.rowMult = function(t, i, m) -- replace i-th row with m*(i-th row) local len len = #(t[i]) for k = 1, len do t[i][k] = m*t[i][k] end end matrixfunction.rowMultSum = function(t, i, j, m) -- replace i-th row with i-th row + m*(j-th row) local len len = #(t[1]) for k = 1, len do t[i][k] = t[i][k] + m*t[j][k] end end \stopluacode \startformula\startluacode matrixfunction.print_matrixA() \stopluacode\stopformula \startformula\startalign \startluacode local mat = {{0, 2, 4, -4, 1},{0, 0, 2, 3 , 4}, {2, 2, -6, 2, 4 }, {2,0 , -6, 9, 7}} context.NC("\\text{Given matrix}\\quad\\Rightarrow\\quad") context.NC() matrixfunction.print_matrix(mat) context.NR() context.NC() context("{\\bf r}_1 \\leftrightarrow {\\bf r}_3 \\quad\\Rightarrow\\quad") matrixfunction.rowChange(mat, 1, 3) context.NC() matrixfunction.print_matrix(mat) context.NR() context.NC() context("\\frac{1}{2}{\\bf r}_1 \\rightarrow {\\bf r}_1 \\quad\\Rightarrow\\quad") matrixfunction.rowMult(mat, 1, 1/2) context.NC() matrixfunction.print_matrix(mat) context.NR() context.NC() context("-2{\\bf r}_1 + {\\bf r}_4 \\rightarrow {\\bf r}_4 \\quad\\Rightarrow\\quad") matrixfunction.rowMultSum(mat, 4, 1, -2) context.NC() matrixfunction.print_matrix(mat) context.NR() context.NC() context("{\\bf r}_2 \\leftrightarrow {\\bf r}_3 \\quad\\Rightarrow\\quad") matrixfunction.rowChange(mat, 2, 3) context.NC() matrixfunction.print_matrix(mat) context.NR() \stopluacode \stopalign\stopformula \stoptext

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A problem with \blank
by Marcin Borkowski 25 Oct '12

25 Oct '12

Good evening, I have something like this in my document: \startalignment[middle] ... \stopalignment \startitemize ... \stopitemize and I want some (more) vertical space in between them. Adding a \blank[big] (and even a \blank[big,force]) didn't help. Interestingly, \leavevmode\blank[big] did. What is going on? What is the "canonical" way to achieve what I want to have? Regards, -- Marcin Borkowski http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski Adam Mickiewicz University

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Making math smaller
by Marcin Borkowski 25 Oct '12

25 Oct '12

Hi again, I promise this is my last question now - it's 1:00 AM here, I'm starting to sleep;). But how do I make my math smaller? {\tfx\math{a^2+b^2=c^2}} won't work. Best, -- Marcin Borkowski http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski Adam Mickiewicz University

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using variable for subscript in math+lua
by Jeong Dal 25 Oct '12

25 Oct '12

Dear Hans, Lucas, Wolfgang, Aditya Now, I write a matrix using \startluacode by the helps of you. Also, I can do some operations in matrices which reduced my typing job. In this code, I have to give all the entries of a matrix as a table. It is good to use in many cases. I have one more question. If the given array is as the following and it works well. %%%%%%%% \starttext \startluacode printMatrix = function (t) context.startmatrix{left = "\\left(\\,", right = "\\,\\right)"} for _, r in ipairs(t) do for _, c in ipairs(r) do context.NC(c) end context.NR() end context.stopmatrix() end \stopluacode \startformula \startluacode local mat={{"a_{11}","a_{12}","a_{13}"},{"a_{21}","a_{22}","a_{23}"},{"a_{31}","a_{32}","a_{33}"}} printMatrix(mat) \stopluacode \stopformula \stoptext %%%%%%%%%%%%% However, there might be a better way to do job using "for" iteration. I tired to use "i, j" in several ways but it doesn't work. function printMatrixA() context.startmatrix{left = "\\left(\\,", right = "\\,\\right)"} for i=1,3 do for j=1, 3 do context.NC("a_{ij}") end context.NR() end context.stopmatrix() end %%%%%%%%%%%%%%% Is there a way to do such a job using "for" iteration? Thank you for reading. Best regards, Dalyoung

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A few questions about itemizations
by Marcin Borkowski 25 Oct '12

25 Oct '12

Hi all, this code: %%%%%%%%%%%%%%%%%%%% \defineitemgroup[subitems] \setupitemgroup[subitems][each][a,packed][left=(,stopper=)] \starttext \startitemize[n] \startitem Lorem ipsum \startsubitems \startitem dolor \stopitem \startitem sit \stopitem \startitem amet. \stopitem \stopsubitems \stopitem \stopitemize \stoptext %%%%%%%%%%%%%%%%%%%% behaves differently if I change \startsubitems into \startitemize[a,packed][left=(,stopper=)]. Namely, the vertical space before (a) ... does not appear when using \startsubitems. Why is that so? When I want to put the vertical space before the first subitem by means of before={\blank[small]}, nothing happens. Also, is \startitem ... \stopitem really better than \item ...? (Apart from the case when I use the [random] option.) And finally: what is the difference between "right=)" and "stopper=)"? TIA, -- Marcin Borkowski http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski Adam Mickiewicz University

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Section/head with separate numbering and references
by Jason Brown 25 Oct '12

25 Oct '12

Hello, I'm working on a document with both chapter/section numbering, and a 'topic' whose numbers are sequential across the entire document. I found a solution to enable this from a 2003 thread in the archives ("Creating list with separate numbering", 15 April 2003), but I can't seem to get references to work. I've looked through the archives, read The TeXbook, and browsed the ConTeXt source but can't quite figure out how to make this work. I'm using ConTeXt ver: 2011.05.18 18:04 MKII fmt: 2011.7.3 int: english/english Example below: ----------------------------------- % "topic" numbering \definehead [Topic] [subsection] \setuphead [Topic] [ownnumber=yes,number=yes,numberstyle=normal,numbercolor=darkgray,textstyle=\it,alternative=inmargin,header=empty,inbetween=,after=] % use a label text \setuplabeltext[Topic=\S] % increment and feed \newcounter\TopicNumber \def\topic[#1]#2 {\doglobal\increment\TopicNumber \Topic{\TopicNumber}{#2}} \starttext \section{Tufte} \input tufte \topic[topic:SomeTopic]{Some topic.} Here we will discuss a particular topic. \topic[topic:AnotherTopic]{Another topic.} Let's expand on the previous topic. \topic[topic:AGreatTopic]{A great topic.} I can go on like this all day. \section{Another Tufte} \input tufte \topic[topic:SomeOtherTopic]{Some other topic.} Recall in \in{\S}[topic:AnotherTopic] that we extended blah blah from \in{\S}[topic:SomeTopic] and noted that... \stoptext ----------------------------------- Thanks, Jason

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setuphead and newline
by WolfgangZ 25 Oct '12

25 Oct '12

Hello, I'm trying to insert a newline between the number and the head text (chaper). Where do I have to put the \crlf ? It sohould look like: 1 This is the chapter text Many thanks in advance WolfgangZ

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Re: [NTG-context] using variable for subscript in math+lua (and math+MetaFun)
by Jeong Dal 25 Oct '12

25 Oct '12

Dear Gesang and Hans, Your solution is working nicely. I may use lua to simplify my other work. I'd like to ask you one more thing. I tried to write a matrix using MetaFun to add some graphics as following: label(btex $a_{11}$ etex, ( , )); label(btex $a_{12}$ etex, ( , )); label(btex $a_{13}$ etex, ( , )); … label(btex $a_{3,3}$ etex, ( , )); Since the same command is repeated, I tested to use "for" iteration. But I couldn't succeed. It is OK to use the variable as a text but I couldn't find a way to use a variable as a subscript. For example, for i=1 unto 3: label(btex decimal(i) etex, (x,y)); endfor; is OK. But, for i=1 upto 3: label(btex $a_{i}$ etex, (x,y)); endfor; or for i=1 upto 3: label(btex $a_{deciaml(i)}$ etex, (x,y)); endfor; are not working as I wanted. Is there a way to use variable as a subscript in "label"? Thank you again. Best regards, Dalyoung

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Lua in Ctx: "require()" fails?
by Procházka Lukáš Ing. - Pontex s. r. o. 24 Oct '12

24 Oct '12

Hello, I just renewed ConTeXt and new error when using "require" appears (it worked OK until the update): ---- t-Req.mkiv \startluacode require "Test-U" \stopluacode \starttext A \stoptext ---- " mtx-context | run 1: luatex --fmt="c:/ConTeXt/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/cont-en" --interaction="nonstopmode" --jobname="t-Req" --lua="c:/ConTeXt/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/cont-en.lui" --no-parse-first-line --c:FILE="t-Req.mkiv" --c:currentrun=1 --c:fulljobname="C:/Lukas/ConTeXt/Test/t-Req.mkiv" --c:halt-on-error --c:input="C:/Lukas/ConTeXt/Test/t-Req.mkiv" --c:kindofrun=1 --c:mode="t-Req" --c:nonstopm ode "cont-yes.mkiv" This is LuaTeX, Version beta-0.70.2-2012092822 (TeX Live 2012/W32TeX) \write18 enabled. (c:/ConTeXt/tex/texmf-context/tex/context/base/cont-yes.mkiv ConTeXt ver: 2012.10.02 22:03 MKIV fmt: 2012.10.4 int: english/english system > cont-new.mkiv loaded (c:/ConTeXt/tex/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 (C:/Lukas/ConTeXt/Test/t-Req.mkiv ! LuaTeX error <main ctx instance>:2: module 'Test-U' not found: no field package.preload['Test-U'] no file 'Test-U.dll' no file 'c:\Program Files\Lua\5.1\clibs\Test-U.dll' no file 'C:\Lukas\Lua\Test-U.dll' stack traceback: [C]: in function 'require' <main ctx instance>:2: in main chunk. system > tex > error on line 3 in file C:/Lukas/ConTeXt/Test/t-Req.mkiv: LuaTeX error ... 1 \startluacode 2 require "Test-U" 3 >> \stopluacode 4 5 \starttext 6 A 7 \stoptext 8 } require "Test-U".erocount { \luat_start_lua_code_indeed ...ua \zerocount {#1}} l.3 \stopluacode ... " ---- Test-U.lua print("This is Test-U.") ---- The "Test-U.lua is located at: c:\Lukas\Lua\Test-U.lua And (some) environment variables are: " C:\Lukas\ConTeXt\Test>set lua LUA_CPATH=?.dll;c:\Program Files\Lua\5.1\clibs\?.dll;C:\Lukas\Lua\?.dll LUA_DEV=C:\Program Files\Lua\5.1 LUA_PATH=?.lua;C:\Program Files\Lua\5.1\lua\?.luac;C:\Lukas\Lua\?.lua;C:\Lukas\Common\Statics\?.lua;C:\Lukas\Lua\3rdParty\?.lua;C:\Lukas\Lua\3rdParty\stdlib\modules\?.lua " - So the "Test-U.lua" should be found. So what's wrong? What's been renewed in this matter? How to "require" a Lua file (module) correctly? Personally - I've been using "require <file-name>" so far at many places and there was no problem with it. TIA. Best regards, Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038

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