July 2017 - ntg-context - NTG Mailing Lists

Creating SVG: using MetaFun, exporting proper units, conversion to DXF
by Mojca Miklavec 27 Jul '17

27 Jul '17

Hi, I want to play with CNC and don't yet have any experience with CAD software (nor the licence for the expensive ones) other than perhaps some Blender, so I decided to try to use the super ugly route with metapost -> svg -> dxf -> g-code for the first time. I have a few questions. (1) I love Hans' shortcuts in metafun, but I seem to remember that things like input metafun; or perhaps input mp-tool; used to work, so that I don't have to remember to use mpost -mem=metafun my-drawings.mp when compiling the graphics. Did the method with "input" ever work (or is it supposed to work)? Now I'm getting a bunch of weird errors. I would love to specify everything in the source file and then just call mpost. If that doesn't work, that's fine, I can still add "-mem=metafun", but ... (2) I guess that using "raw metapost" is the only sane way to generate SVG. If I use metapost inside ConTeXt that's probably not going to work, right? (3) Is there any way to convince the SVG output mode to generate something like <svg ... width="100.0mm" height="100.0mm" ... > rather than <svg ... width="283.46456692913387" height="283.46456692913387" ... > because the program I use to convert SVG to DXF has troubles interpreting "points" properly. I read somewhere that they assume 90 points per inch because that's Inkskape's default. (4) Does anyone have a better proposal for conversion into DXF (or G-code)? I'm currently playing with FreeCAD and I've seen some tutorials showing that AutoCAD can open PDF directly, but I don't want to buy AudoCAD just for the sake of converting files. (Not to mention that FreeCAD's SVG importer crashes when reading output from MetaPost unless I manually remove parts of the SVG, but that's an unrelated problem that I'm somehow able to overcome.) Thank you, Mojca

4 9

context-2011-mathml-update.pdf FlushStep and mupdf
by Damien Thiriet 26 Jul '17

26 Jul '17

Hi, As suggested a few months ago in thread "which command would give the same effect as \pause in beamer ?", I am digging in context example to use the step mecanism for presentation. I grepped the example folder and founded files using \FlushStep, for example : context-2011-mathml-update.tex The trouble is that when opening context-2011-mathml-update.pdf with mupdf I do not see anything similar to beamer \pause. The whole slides are shown in one piece. I tried several other pdf with Steps mecanism (context-2011-ebook-export, context-2012-thescript, context/2013/context-2013-speed.pdf). Steps weren't displayed in any case. Did I miss something or is it a viewer issue? Thanks, Damien

2 1

Hyphens missing (again) with setupbackend[export
by Rik Kabel 26 Jul '17

26 Jul '17

Aditya came across this in 2011 ([NTG-context] export kills hyphen symbol <https://www.mail-archive.com/ntg-context@ntg.nl/msg58460.html>)[1] with the Fontin font. It wasn’t answered then. It is back if it ever left. Here is an example: \definefontfamily [TestFont] [rm] [Antykwa Torunska Cond] \setupbodyfont [TestFont] \setupbackend [export=maybe]% or yes, or no, or ... \setuppapersize [A7] \starttext \input ward \stoptext If the \setupbackend statement is removed, or an invalid key is used, all is well. It fails with a valid key and any value for that key. I am experiencing the problem of missing hyphens with this font even without \setupbackend, but cannot yet construct a working example. -- Rik [1] https://www.mail-archive.com/ntg-context@ntg.nl/msg58460.html

4 4

t-bnf module with MKIV
by Antoine Cailliau 26 Jul '17

26 Jul '17

Hi, I'm trying to typeset a BNF grammar. The module t-bnf appears to not work with mkiv. http://ctan.math.washington.edu/tex-archive/macros/context/contrib/context-… tex error > tex error on line 157 in file /Users/acailliau/context/tex/texmf-modules/tex/context/third/bnf/t-bnf.tex: ! Undefined control sequence \c!terminalstart =\tttf \syst_helpers_process_comma_item #1,#2->\if ,#1 ,\expandafter \syst_helpers_p... \c!terminalstart =\tttf , \c!terminalstop =, \c!nonterminalstart =\mathematics \syst_helpers_get_parameters ...cess_comma_item #1 ,],\_e_o_p_ l.157 \c!indentnext=\v!no] 147 \def\setupbnfgrammar% 148 {\dosingleargument\dosetupbnfgrammar} 149 150 \setupbnfgrammar 151 [\c!terminalstart=\tttf, 152 \c!terminalstop=, 153 \c!nonterminalstart=\mathematics{\langle}, 154 \c!nonterminalstop=\mathematics{\rangle}, 155 \c!is={ \mathematics{\longrightarrow}}, 156 \c!option=\mathematics{\vert}, 157 >> \c!indentnext=\v!no] 158 159 %D \macros 160 %D {BNF} 161 %D 162 %D We also define a useful abbreviation to be used for header texts and labels. 163 164 \logo[BNF]{bnf} 165 166 %D And we use it here: 167 Can anyone provides me clues on how to make it work ? Here is a minimal example: \usemodule[t-bnf] \starttext \startbnfgrammar[] <exp>: <num> | <num> "+" <num> <num>: "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" \stopbnfgrammar \stoptext Thanks in advance, Antoine

1 0

Get number of chapter and section
by Gerion Entrup 25 Jul '17

25 Jul '17

Hi, I've another question. Currently I'm experimenting with the header and can retrieve the chapter name with \getmarkin[chapter]. How can I get the current number of the chapter (\getnumber[chapter] does not work) and the section? Regards, Gerion

2 1

Bug in wiki \doifsamestringselse vs \doifsamestringelse
by Jaroslav Hajtmar 25 Jul '17

25 Jul '17

Hello ConTeXist I add wiki information. In wiki on page http://wiki.contextgarden.net/System_Macros/Branches_and_Decisions is bug (I think) in caption \doifsamestringselse,\doifsamestring,\doifnotsamestring. Right information is \doifsamestringelse,\doifsamestring,\doifnotsamestring (without s in first keyword). Macro \doifsamestringselse not work. Is there anybody, that fix this bug? Jaroslav Hajtmar

2 2

Metafun: setting pen size in properties
by Aditya Mahajan 25 Jul '17

25 Jul '17

Hi, Is it possible to set pen width using properties(...)? The following does not work (the color is set, but not the pen width): \starttext \startMPcode property p[] ; p[1] := properties(withcolor red withpen pencircle scaled 1bp); p[2] := properties(withcolor blue withpen pencircle scaled 10bp); draw fullcircle scaled 1cm withproperties p[1]; draw fullcircle scaled 2cm withproperties p[2]; \stopMPcode \stoptext Also, what is the advantage of using properties over a simple def? (except that I cannot def a suffixed variable). For example: \starttext \startMPcode def qA = withcolor red withpen pencircle scaled 1bp enddef; def qB = withcolor blue withpen pencircle scaled 10bp enddef; draw fullcircle scaled 1cm qA; draw fullcircle scaled 2cm qB; \stopMPcode \stoptext Thanks, Aditya

3 4

Unable to switch math fonts
by Kumar Appaiah 25 Jul '17

25 Jul '17

Hi. I'm using the Debian packaged ConTeXt, version 2017.05.15.20170613-2. I have the Neo Euler OTF font and mtxrun --script fonts finds it. I am unable to get the following to work: \definefontfamily [myfamily] [math] [Neo Euler] \setupbodyfont[myfamily] \starttext This is plain text. \startformula x + y = z \stopformula \stoptext The above code doesn't build for me with errors in the formula portion. However, removing the Neo Euler line makes it work. Moreover, this works: \definefontfamily [myfamily] [serif] [Neo Euler] \setupbodyfont[myfamily] \starttext This is plain text. \startformula x + y = z \stopformula \stoptext But this makes everything, including math, Euler. Could you please help me out? Thanks. Kumar

4 7

letters in context mkiv
by r.ermers＠hccnet.nl 25 Jul '17

25 Jul '17

Dear Contex’ers, I use Context for many things. One of them is letters. I have used the letter module of mkii with an xml database (see example), but now I would like to step forward to mkiv. I have found out how to process the xml data from an xml file (now in the buffer). The recipient’s address neatly shows up in the designed place. (See pdf). So far, everything seems OK. Yet when I add text, only the text appears, and all address data from the xml file disappear. You can try it out by uncommenting the %\input knuth or %tekst lines. I have tried various options, but for now I have no idea how to proceed further. Context Version: 2017.07.17 00:20 Lua 5.2.4, This is LuaTeX, Version 1.05.0. Your help is much appreciated! Kind regards, Robert \usemodule[letter] \setuplanguage[nl][date={year, –, mm, –, dd}] % ISO 8601 date \setupletteroptions[language=netherlands,bodyfont={rm,10pt},whitespace=1.5ex] \startbuffer[participants] <contacts> <contact class='participant' label='Hendriks'> <formalname>Hendriks</formalname> <informalname>Karel</informalname> <prefix>mr.</prefix> <initials>K.</initials> <city>Arnhem</city> <address> <p>Mr. K. Hendriks</p> <p>Grotestraat 5</p> <p>1234 BB Arnhem</p> </address> <kix>1234bb5</kix> </contact> <contact class='participant' label='Janssen'> <formalname>Janssen</formalname> <informalname>Piet</informalname> <initials>P.</initials> <prefix>mr.</prefix> <city>Nijmegen</city> <address> <p>Mr. P. Janssen</p> <p>Kortestraat 8</p> <p>1234 AA Nijmegen</p> </address> <kix>1234aa8</kix> </contact> </contacts> \stopbuffer \startxmlsetups xml:setups \xmlsetsetup{#1}{document|contacts|contact|prefix|initials|address|city|text|kix|p}{xml:*} %\xmlsetsetup{\xmldocument}{text:p}{xml:paragraph} \stopxmlsetups \xmlregistersetup{xml:setups} \startxmlsetups xml:contacts \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:contact \setupletter [toaddress={\xmlall{#1}{/address/p}\par\xmltext{#1}{/kix}}] \defineletterelement[layer][address][example]% {\correspondenceparameter{toname}\\\correspondenceparameter{toaddress}\par} %toname is not used in setupletter because toaddress contains all data. %kix is used for adding a barcode to the address. \setupletterlayer[address][alternative=example,y=6cm,x=12cm,color=red,style=\tfa\sans] \startletter [opening={Dear \xmltext{#1}{/prefix} \xmltext{#1}{/formalname},}, closing={Kind regards,}, subject={subject: your life in \xmltext{#1}{/city}}, signature={X}] \stopletter \stopxmlsetups \startxmlsetups xml:address \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:p \xmlflushtext{#1}\par \stopxmlsetups \starttext %\input knuth %tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst tekst \xmlprocessbuffer{main}{participants}{} \stoptext

1 0

handling code in XML
by Pablo Rodriguez 24 Jul '17

24 Jul '17

Hans, I have the following sample: \startbuffer[demo] <doc> <div> <source>\command[option=value]{text "<&>"}</source> </div> <div class="sourceCode"> <pre class="sourceCode tex"> <code class="sourceCode latex"> <span class="fu">\command</span>[option=value]{text "<&>"} </code> </pre> </div> </doc> \stopbuffer \startxmlsetups xml:initialize \xmlsetsetup{#1}{doc|source|div|span}{xml:*} \xmlsetsetup{\xmldocument} {pre[contains(@class,'sourceCode')]/ code[contains(@class,'sourceCode')]} {xml:pre:code} \stopxmlsetups \xmlregistersetup{xml:initialize} \startxmlsetups xml:doc \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:div \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:source \xmlprettyprint{#1}{tex} \stopxmlsetups \startxmlsetups xml:pre:code \xmlflushspacewise{#1} \stopxmlsetups \startxmlsetups xml:span \bgroup\xmlflush{#1}\egroup \stopxmlsetups The .sourceCode elements are the standard way in which pandoc serves colored code. I have to deal with them. In the sample above, for xml:pre:code, I would need and expanded \xmlprettyprint that also ignores tags inside (anything between < and >, but not the entities). Which is the way to get this expanded \xmlprettyprint? Many thanks for your help, Pablo -- http://www.ousia.tk

2 3