- ntg-context - Mailing Lists

ConTeXt mathematics macros
by Shuxian Wang 16 Oct '18

16 Oct '18

Hello list, As a new user of ConTeXt, I have some trouble on trying out various mathematics modules. I tried to use the nath module by directly including `\usemodule[nath]` in my source file. It seems that the module is not loaded. I read through the wiki page and found that nath is not included in the TeX Live distribution, but I failed to find a way to install it. Also, when I hunted through the wiki articles, it stated that the newmat module is included by default, but I never find it in my TeX Live 2018. Am I missing something or is the wiki outdated? By the way, I am looking for a "battery included" math module, which provides predefined macros like the absolute value symbol, derivative, and partial derivative. Any recommendation or advice on this? Thanks! Shuxian Wang

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insert natural table at the top left of some png
by Damien Thiriet 16 Oct '18

16 Oct '18

Hello, I am still working on maps and facing some new issue. The program I used to design one map is not convenient for writing key to symbols, and what I have is a map.png file with big spare space on its upper left corner. So I have either to write on the png with ImageMagick or GIMP, or have a nicer output with ConTeXt. I wrote this legend file. \definecolor[canaux][h=81b3e0] \startreusableMPgraphic{voies} path p; p:= (0,0) -- (20,0) ; drawarrow p withcolor black ; \stopreusableMPgraphic \startreusableMPgraphic{canaux} path p; p:= (0,0) -- (20,0) ; drawarrow p withcolor \MPcolor{canaux} withpen pencircle scaled 2pt; \stopreusableMPgraphic \startbuffer \bTABLE[frame=off] \setupTABLE[column][1,3][align={middle,lohi}] \bTR \bTH 1) \eTH \bTH Le milieu \eTH \bTH 2) \eTH \bTH Les activités \eTH \eTR \bTR \bTD \externalfigure[illustrations/zone_urbaine][height=12bp] \eTD \bTD zones urbaines \eTD \eTR \bTR \bTD \leavevmode \reuseMPgraphic{voies} \eTD \bTD infrastructures~: voies ferrées \eTD \eTR \bTR \bTD \leavevmode \reuseMPgraphic{canaux} \eTD \bTD infrastructures~: canaux \eTD \eTR eTR \eTABLE \stopbuffer The idea was to make some \hbox{ \externalfigure[map][width=0.9 \textwidth] \vbox{\hfill -0.9 \textwidth \getbuffer } } to put the boxed legend at this upper left corner. Of course I couldn't succeed, since I do not understand so much boxes. ConTeXt complains with a missing number. How could I achieve such boxing ? Thanks, Damien Thiriet

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weird spacing after command type
by Pablo Rodriguez 14 Oct '18

14 Oct '18

Dear list, I have the following sample: \define[1]\slide{\startmakeup[standard]#1\stopmakeup} \definetype[texcode][style=\ttd, option=TEX] \starttext \slide{\texcode{\ifodd\pageno impar\else par\fi}} \startmakeup[standard] \texcode{\ifodd\pageno impar\else par\fi} \stopmakeup \stoptext I wonder why \slide introduces a space after each command. Am I missing something or have I hit a bug? Many thanks for your help, Pablo -- http://www.ousia.tk

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Re: [NTG-context] Construct a matrix with Metafun
by Wolfgang Schuster 14 Oct '18

14 Oct '18

It works for me when I add a space after each \MPcode{…} block. \math{\MATRIX{\MPcode{...} ;\MPcode{...} }} Wolfgang Fabrice Couvreur schrieb am 14.10.18 um 12:18: > Hi Wolfgang, > Thank you for your solution.The space came from copy-paste because if > I do this, it does not work : > > \definemathmatrix [pmatrix][matrix:parentheses][simplecommand=MATRIX] > > \starttext > > \math{\MATRIX{\MPcode{draw (0,0) -- (1cm,0);} ;\MPcode{draw (0,0) -- > (1cm,0);}}} > > \stoptext > > Fabrice > > Le dim. 14 oct. 2018 à 11:08, Wolfgang Schuster > <wolfgang.schuster.lists(a)gmail.com > <mailto:wolfgang.schuster.lists@gmail.com>> a écrit : > > > > Fabrice Couvreur schrieb am 14.10.18 um 10:46: >> Hi, >> I tried to use Metafun and \definemathmatrix [pmatrix] [matrix: >> parentheses] [simplecommand = MATRIX] to create two matrices, but >> that does not work. > > 1. You have a space in [matrix: parentheses] > > 2. When you have only simple graphics like in your example you can > use framed. > > \starttext > > \startformula > A\, > \startmathmatrix[left=\left(,right=\right)] > \NC \framed[width=1em,height=1em,frame=off,bottomframe=on]{} \NC > \framed[width=1em,height=1em,frame=off,bottomframe=on,leftframe=on]{} > \NR > \NC \framed[width=1em,height=1em,frame=off,rightframe=on]{} \NC > \framed[width=1em,height=1em]{} \NR > \stopmathmatrix > \stopformula > > \stoptext > > Wolfgang >

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Construct a matrix with Metafun
by Fabrice Couvreur 14 Oct '18

14 Oct '18

Hi, I tried to use Metafun and \definemathmatrix [pmatrix] [matrix: parentheses] [simplecommand = MATRIX] to create two matrices, but that does not work. Thank you. Fabrice [image: matrice.jpg]

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Construct a matrice with Metafun and \MATRIX{}
by Fabrice Couvreur 14 Oct '18

14 Oct '18

Hi, I tried to use Metafun and \definemathmatrix [pmatrix] [matrix: parentheses] [simplecommand = MATRIX] to create two matrices, but that does not work. Thank you. http://image.noelshack.com/fichiers/2018/41/7/1539507927-matrice.jpg

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xtables: horizontal splitting
by Tomas Hala 13 Oct '18

13 Oct '18

Hi all, at https://wiki.contextgarden.net/Tables_Overview is mentioned that the xtables can be splitted even horizontally (which will just suit me very well). The command \setupxtable[myxtable][split=yes] will do it only vertically. I would like to ask what is the correct option for the horizonal splitting; neither xtables manual, nor i-context.pdf say anything. Best wishes, Tomáš

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context and sqlite
by Jörg Hofmann 13 Oct '18

13 Oct '18

I've been trying to connect ConTeXt to sqlite for almost a week but I have repeatedly failed. Neither the "internal" variant according to the documentation, nor the attempt on luasql have worked. Above all, the Google request showed me that not alone with this problem - how reassuring. ;-) At the moment, concentrate I am accessing via swiglib and think my problem lies here (from my log file): sql> start loading method 'sqlite' swiglib> unknown: 'swiglib.sqlite.core' swiglib> unknown: 'swiglib.helpers.core' Obviously, the appropriate modules are not found, but where Can I get them and where do they belong? And maybe also someone a working code example for me. I'm working with Texlive 2017 on XUBUNTU 16.04. Best regards Jörg Hofmann

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Unexpected space after hyphen in xml/html export
by Rik Kabel 11 Oct '18

11 Oct '18

List, Occasionally an unexpected and unwanted space is inserted following the hyphen of a compound word in html/xml exports. In a document with about 500 such compounds, this occurs 30 times. The following input: \setupbackend [export=yes,xhtml=yes] \starttext Theocracy, the priest power; monarchy, the one|-|man power; and oligarchy, the few|-|men power|—|are three forms of vicarious government over the people, perhaps for them, not by them. Democracy is direct self|-|government over all the people, for all the people, by all the people. Our institutions are democratic: theocratic, monarchic, oligarchic vicariousness is all gone. We have no Divine vicar who is responsible to God for our politics and religion; only a human attorney, answerable to the people for his official work. The axis of rotation has changed: the equator of the old civilization passes through the poles of the new. This makes some change in the geography of both Church and State. \stopsection \stoptext Produces, in relevant part, the following xml (wrapped for convenience): Theocracy, the priest power; monarchy, the one-man power; and oligarchy, the few- men power—are three forms of vicarious government over the people, perhaps for them, not by them. Democracy is direct self-government over all the people, for all the people, by all the people. Our institutions are democratic: theocratic, monarchic, oligarchic vicariousness is all gone. We have no Divine vicar who is responsible to God for our politics and religion; only a human attorney, answerable to the people for his official work. The axis of rotation has changed: the equator of the old civilization passes through the poles of the new. This makes some change in the geography of both Church and State.</document> Note the space after "few-" in the second line of the output text. (The paragraph is a quotation from Theodore Parker's sermon "The Effect of Slavery on the American People," delivered on July 4, 1858. It is thought by many to be the inspiration for part of Lincoln's Gettysburg Address.) -- Rik

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Implicit plots/level curves possible?
by Mikael P. Sundqvist 11 Oct '18

11 Oct '18

Dear list, Is it possiblet to make implicit plots (i.e. ploting the curves described by equations) in MetaFun? I cannot find anything about them in the MetaFun manual. For example, in Mathematica I can write something like ContourPlot[2 x^5 + x y + y^5 == 0, {x, 0, 2}, {y, -2, 1/2}] to get the attached figure. The closest I have found which is something MetaPost-like, is the levelcurve command in mfpic (see for example this answer https://tex.stackexchange.com/a/405527/52406) If this is not currently possible in MetaFun, what is the simplest way to proceed (I want the same style of the plots as the other ones in my doc)? Is it to 1) somehow run mfpic from within ConTeXt? 2) export points from Mathematica and plot them in ConTeXt (how could that be done?). In the latter case, say I have the points (0,0), (0.4,1), and (0.8,2) exported to a file. What format should it be in to be easily imported and plot in MetaFun? 3) some other way? /Mikael

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