[NTG-context] MetaPost circular_shade Command
The command circular_shade(fullcircle scaled 4in,0,white,red); in MetaPost does not act as I think it should. It performs a gradient fill starting at the center of the circle by filling this center in white (which is expected), and changing the color as the radius/diameter changes (which is also expected), but the final radius appears to have a RGB color of about (1,0.29,0.29) which is not red (thus is unexpected) since red = (1,0,0). However, the command circular_shade(unitsquare shifted (-0.5,-0.5) scaled 4in,0,white,red); creates a gradient filled square whose center is white and whose northeast, northwest, southwest, and southeast corner are red (as somewhat expected) and thus whose east, north, west, and south tip are about (1,0.29,0.29) like the circle. I would appreciate an explanation of why this acts like it does, and (more importantly), let me know how I can get a gradient filled circle whose center gets filled with a RGB color c and outer radius color d. Clearly, circular_shade(fullcircle scaled 4in,0,c,d); does not do this. Thanks in advance, Troy Henderson ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Font for MetaPost graphics
The wiki claims setting up an MPenvironment is enough to change the font in MetaPost graphics: \startMPenvironment%[global] \switchtobodyfont [sans] \stopMPenvironment \starttext This should be serif. \startMPcode draw textext(This should be in sans.); \stopMPcode \stoptext However, this has no effect. All text is in default serif font. If [global] is provided, all text is in sans font. I am aware of a similar issue in a thread last year¹, but the solution didn't really address the problem. textext(\sans This should be sans.) works here, but the point is that the MPenvironment fails. Why is that? Marco [1] http://thread.gmane.org/gmane.comp.tex.context/69044 ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Font for MetaPost graphics
On Thu, 3 May 2012, Marco wrote: The wiki claims setting up an MPenvironment is enough to change the font in MetaPost graphics: \startMPenvironment%[global] \switchtobodyfont [sans] \stopMPenvironment \starttext This should be serif. \startMPcode draw textext(This should be in sans.); \stopMPcode \stoptext However, this has no effect. All text is in default serif font. If [global] is provided, all text is in sans font. I am aware of a similar issue in a thread last year¹, but the solution didn't really address the problem. textext(\sans This should be sans.) works here, but the point is that the MPenvironment fails. Why is that? Metapost now runs as a library. All the text is first typeset by ConTeXt and metapost only knows the bounding box of the labels. You can try (untested): \starttext This is serif \switchtobodyfont[sans] \startMPcode draw textext(This should be sans); \stopMPcode \stoptext Aditya___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] MetaPost circular_shade Command
It seems that I should do something like fill fullcircle scaled 4in withshade define_circular_shade(origin,origin,0 ,2in,white,red); Sorry for the premature question. Troy ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Font for MetaPost graphics
On 2012-05-02 Aditya Mahajan adit...@umich.edu wrote: Metapost now runs as a library. All the text is first typeset by ConTeXt and metapost only knows the bounding box of the labels. You can try (untested): \starttext This is serif \switchtobodyfont[sans] \startMPcode draw textext(This should be sans); \stopMPcode \stoptext This works, of course. However it continues with sans font even after \stopMPcode. This is better (but clumsy): \start \switchtobodyfont[sans] \startMPcode draw textext(This should be sans); \stopMPcode \stop Here serif again. The text in Metapost adapts to the text set in ConTeXt. But the font setup should *only* be set for MetaPost, not regular text. Does that mean, that MPenvironment is deprecated and does not work at all? Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost/Metafun Q: using variables and building blocks?
Hi Mari, Am 30.04.2012 23:40, schrieb Mari Voipio: On Mon, Apr 23, 2012 at 20:34, Mari Voipio mari.voi...@iki.fi wrote: a) I need to be able to stack four of these on top of each other and then four mirrored ones next to them OK, I really was being stupid - I had already managed to do a shift inside a single 'block', somehow I just didn't see that I could do the same to the blocks: \startMPpage picture ll ; % left-hand loop ll := image ( path p, q, r ; p := fullcircle scaled 4mm ; q := p shifted (0mm,10mm) ; r := center p .. (5mm,5mm) .. center q ; pair pr, qr ; pr := p intersectionpoint r ; qr := q intersectionpoint r ; r := r cutbefore pr cutafter qr ; r := r cutends 0.2mm ; draw r withpen pencircle scaled 0.2mm withcolor black ; % the connecting curve draw p withpen pencircle scaled 0.2mm withcolor black ; fill p withcolor black ; % upper shank draw q withpen pencircle scaled 0.2mm withcolor black ; fill q withcolor black ; % lower shank ); draw ll ; draw ll shifted (0mm,20mm) ; draw ll shifted (0mm,40mm) ; draw ll shifted (0mm,60mm) ; \stopMPpage Keeping in mind that I will have to be able to draw a path/arrow on top, so I need to know where they are. My little brain got an overflow from all this abstract thinking, but then it dawned on me that I could use the millimeter grid recipe in the MetaFun manual (p. 214) to draw a grid behind my pattern drawing. Now placing the arrows should be a walk in the park... b) The circles p and q can be filled with the same colour or two different colours, and each of the blocks in a pattern can have different fill colour I assume the answer is use variables, but how? Gaah, I still cannot figure it out! A real example: one of my own patterns has white up and down on first loop, black up white down on second, white up and down on third and blue up and down on fourth. So I'd need draw ll ; % and fill both circles with white draw ll shifted (0mm,20mm) ; % and fill lower circle with white, shifted/upper circle with black draw ll shifted (0mm,40mm) ; % fill both circles with white draw ll shifted (0mm,60mm) ; % fill both circles with blue What is the shortest way of doing this? I don't mind writing definitions earlier in the file, but I'd rather keep this part as short as possible to be able to see the pattern at one glance. The main problem comes from the bicoloured loops as I can't just apply the same fill on both. And on the whole I'd prefer to make sure I apply the fill only locally per each half-loop and not all over the place... donno what is the shortest way, but this looks at least handy... \startMPinclusions patternsize:= 20mm; def lhl(expr ca,cb,sx,sy) = picture lefthandloop; lefthandloop := image ( path p, q, r ; p := fullcircle scaled 4mm ; q := p shifted (0mm,10mm) ; r := center p .. (5mm,5mm) .. center q ; r := r cutbefore (p intersectionpoint r) cutafter (q intersectionpoint r) ; draw r withpen pencircle scaled 0.2mm withcolor black ; % the connecting curve fill p withcolor ca; draw p withpen pencircle scaled 0.2mm withcolor black ; % upper shank fill q withcolor cb; draw q withpen pencircle scaled 0.2mm withcolor black ; % lower shank ); draw lefthandloop shifted (sx*patternsize,sy*patternsize); enddef; \stopMPinclusions \startMPpage lhl(white,white,0,0); lhl(white,black,0,1); lhl(white,white,0,2); lhl(blue ,blue ,0,3); \stopMPpage Best wishes, Peter ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost/Metafun Q: using variables and building blocks?
On Mon, Apr 23, 2012 at 20:34, Mari Voipio mari.voi...@iki.fi wrote: a) I need to be able to stack four of these on top of each other and then four mirrored ones next to them OK, I really was being stupid - I had already managed to do a shift inside a single 'block', somehow I just didn't see that I could do the same to the blocks: \startMPpage picture ll ; % left-hand loop ll := image ( path p, q, r ; p := fullcircle scaled 4mm ; q := p shifted (0mm,10mm) ; r := center p .. (5mm,5mm) .. center q ; pair pr, qr ; pr := p intersectionpoint r ; qr := q intersectionpoint r ; r := r cutbefore pr cutafter qr ; r := r cutends 0.2mm ; draw r withpen pencircle scaled 0.2mm withcolor black ; % the connecting curve draw p withpen pencircle scaled 0.2mm withcolor black ; fill p withcolor black ; % upper shank draw q withpen pencircle scaled 0.2mm withcolor black ; fill q withcolor black ; % lower shank ); draw ll ; draw ll shifted (0mm,20mm) ; draw ll shifted (0mm,40mm) ; draw ll shifted (0mm,60mm) ; \stopMPpage Keeping in mind that I will have to be able to draw a path/arrow on top, so I need to know where they are. My little brain got an overflow from all this abstract thinking, but then it dawned on me that I could use the millimeter grid recipe in the MetaFun manual (p. 214) to draw a grid behind my pattern drawing. Now placing the arrows should be a walk in the park... b) The circles p and q can be filled with the same colour or two different colours, and each of the blocks in a pattern can have different fill colour I assume the answer is use variables, but how? Gaah, I still cannot figure it out! A real example: one of my own patterns has white up and down on first loop, black up white down on second, white up and down on third and blue up and down on fourth. So I'd need draw ll ; % and fill both circles with white draw ll shifted (0mm,20mm) ; % and fill lower circle with white, shifted/upper circle with black draw ll shifted (0mm,40mm) ; % fill both circles with white draw ll shifted (0mm,60mm) ; % fill both circles with blue What is the shortest way of doing this? I don't mind writing definitions earlier in the file, but I'd rather keep this part as short as possible to be able to see the pattern at one glance. The main problem comes from the bicoloured loops as I can't just apply the same fill on both. And on the whole I'd prefer to make sure I apply the fill only locally per each half-loop and not all over the place... Getting closer, Mari PS. I don't have any photos of the above braid, but here's a typical fingerloop braid that I did and need to document: http://www.lucet.fi/2012/04/sydamellista-hearty/ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Commands with arguments with MetaPost
I would like to be able to do something like this
\def\foo#1{
\startMPcode
fill (0,0)--(598,0)--(598,50)--(0,50)--cycle withcolor green;
label.rt(btex #1 etex),(50,25);
\stopMPcode
}
and then use this in my ConTeXt document by
\foo{Some text}
However, my syntax seems to be incorrect, and I would appreciate any
help in fixing it.
Thanks,
Troy Henderson
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Re: [NTG-context] Commands with arguments with MetaPost
On Wed, 25 Apr 2012 11:15:10 -0500
Troy Henderson thend...@gmail.com wrote:
I would like to be able to do something like this
\def\foo#1{
\startMPcode
fill (0,0)--(598,0)--(598,50)--(0,50)--cycle withcolor green;
label.rt(btex #1 etex),(50,25);
\stopMPcode
}
and then use this in my ConTeXt document by
\foo{Some text}
However, my syntax seems to be incorrect, and I would appreciate any
help in fixing it.
\framed [frame=off,background=color,backgroundcolor=green,width=598,height=50]
{Some text}
(Of course, you need to put correct dimensions for the width and height
and also set an offset.)
Untested, so the syntax may be not quite correct.
You might want to use
\setupframedtext
and
\startframedtext
\stopframedtext
if you will be doing this often.
There is probably also a way to define a named framed text.
Alan
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Re: [NTG-context] Commands with arguments with MetaPost
On Apr 25, 2012, at 12:15 PM, Troy Henderson wrote:
I would like to be able to do something like this
\def\foo#1{
\startMPcode
fill (0,0)--(598,0)--(598,50)--(0,50)--cycle withcolor green;
label.rt(btex #1 etex),(50,25);
\stopMPcode
}
Looks like a misplaced parenthesis:
label.rt(btex #1 etex,(50,25));
- Michael
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[NTG-context] Metapost/Metafun Q: using variables and building blocks?
Hello all, any graphic experts around who can bump me past a stupid hinder on my way to understanding MPgraphics? I'm trying to create a system of describing certain type of braiding patterns (fingerloop braiding), based on what has been used in the field before me - but they did it all manually either by pen or computer, and I just do not fancy doing 40+ patterns by hand in Inkscape, especially as my pattern recipe book keeps expanding and I'm planning on that, too. I think Metapost could be the solution, because I need simple shapes and sometimes complicated but well-regulated paths/arrows to go between them; I'm just being a clueless newbie, too much in the WYSIWYG vector graphics mode to really know what to do. Mostly with the examples in the Metafun manual I've managed to get as far as to my basic building block, two circles joined by a curve: \startMPpage path p, q, r ; p := fullcircle scaled 8mm ; q := p shifted (0cm,24mm) ; r := center p .. (12mm,12mm) .. center q ; pair pr, qr ; pr := p intersectionpoint r ; qr := q intersectionpoint r ; r := r cutbefore pr cutafter qr ; r := r cutends 0.2mm ; draw r withpen pencircle scaled 0.2mm withcolor black ; draw p withpen pencircle scaled 0.2mm withcolor black ; fill p withcolor white; draw q withpen pencircle scaled 0.2mm withcolor black ; fill q withcolor black; \stopMPpage However, I don't seem to be able to find the answers to the next questions: a) I need to be able to stack four of these on top of each other and then four mirrored ones next to them (all-in-all a 2 x 4 grid/block), and probably a 1-block space between the two columns. I realize I can do that with shift, but should I make my single 'building block' a group, a buffer or overlay or something else? Keeping in mind that I will have to be able to draw a path/arrow on top, so I need to know where they are. (At some point I need to expand to more columns, but the number of rows is still 4 as we have humans have just four aligned fingers per hand - thumbs aren't counted - but one can add hands i.e. people to work wider braids.) b) The circles p and q can be filled with the same colour or two different colours, and each of the blocks in a pattern can have different fill colour (e.g. two totally black, two totally white, two half-and-half with either black or white on top). The pen/outline colour should stay as black, which means that I can't implement the symbol example in the Metafun manual (the smiley that is totally switched from black to red). I don't mind having different blocks for monocoloured and bicoloured versions, but it would be nice to be able to say something like \usesloop[lh,blue] for 'take a single-coloured left-hand loop in blue' instead of having to dig deeper into the MP code every time. I assume the answer is use variables, but how? I used millimeters here because it just feels more natural to me, that's what textile crafts does (when not based on inches like quilting and scrapbooking...). The measurements won't be shown anywhere - these are graphs or pictograms, not real pictures - so I can still switch to using something else. Besides, if the building block approach works, there isn't that much to be changed, get the first block right and the rest can be calculated from there. Any ideas on how I can achieve the ease that surely exists somewhere there? I'll take plain Metapost or a combination of Metapost and Metafun + ConTeXt as I'll use ConTeXt anyway to achieve multi-format output with a minimum of fuss. Help thankfully received, as always, Mari PS. Today's craft related metaphor: I feel just like I was staring at a messed up skein of yarn: I know that I'm now holding one of the ends, I thus can start to untangle the knot - and the more I pry loose, the less there's left to sort out. However, in the beginning the process tends to be very slow and awkward... ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost/Metafun Q: using variables and building blocks?
On 23-4-2012 19:34, Mari Voipio wrote: Hello all, any graphic experts around who can bump me past a stupid hinder on my way to understanding MPgraphics? I'm trying to create a system of describing certain type of braiding patterns (fingerloop braiding), based on what has been used in the field before me - but they did it all manually either by pen or computer, and I just do not fancy doing 40+ patterns by hand in Inkscape, especially as my pattern recipe book keeps expanding and I'm planning on that, too. I think Metapost could be the solution, because I need simple shapes and sometimes complicated but well-regulated paths/arrows to go between them; I'm just being a clueless newbie, too much in the WYSIWYG vector graphics mode to really know what to do. Mostly with the examples in the Metafun manual I've managed to get as far as to my basic building block, two circles joined by a curve: \startMPpage path p, q, r ; p := fullcircle scaled 8mm ; q := p shifted (0cm,24mm) ; r := center p .. (12mm,12mm) .. center q ; pair pr, qr ; pr := p intersectionpoint r ; qr := q intersectionpoint r ; r := r cutbefore pr cutafter qr ; r := r cutends 0.2mm ; draw r withpen pencircle scaled 0.2mm withcolor black ; draw p withpen pencircle scaled 0.2mm withcolor black ; fill p withcolor white; draw q withpen pencircle scaled 0.2mm withcolor black ; fill q withcolor black; \stopMPpage However, I don't seem to be able to find the answers to the next questions: a) I need to be able to stack four of these on top of each other and then four mirrored ones next to them (all-in-all a 2 x 4 grid/block), and probably a 1-block space between the two columns. I realize I can do that with shift, but should I make my single 'building block' a group, a buffer or overlay or something else? Keeping in mind that I will have to be able to draw a path/arrow on top, so I need to know where they are. (At some point I need to expand to more columns, but the number of rows is still 4 as we have humans have just four aligned fingers per hand - thumbs aren't counted - but one can add hands i.e. people to work wider braids.) b) The circles p and q can be filled with the same colour or two different colours, and each of the blocks in a pattern can have different fill colour (e.g. two totally black, two totally white, two half-and-half with either black or white on top). The pen/outline colour should stay as black, which means that I can't implement the symbol example in the Metafun manual (the smiley that is totally switched from black to red). I don't mind having different blocks for monocoloured and bicoloured versions, but it would be nice to be able to say something like \usesloop[lh,blue] for 'take a single-coloured left-hand loop in blue' instead of having to dig deeper into the MP code every time. I assume the answer is use variables, but how? something: \startMPpage def MyShape = image ( path p, q, r ; p := fullcircle scaled 8mm ; q := p shifted (0cm,24mm) ; r := center p .. (12mm,12mm) .. center q ; pair pr, qr ; pr := p intersectionpoint r ; qr := q intersectionpoint r ; r := r cutbefore pr cutafter qr ; r := r cutends 0.2mm ; draw r withpen pencircle scaled 0.2mm withcolor black ; draw p withpen pencircle scaled 0.2mm withcolor black ; fill p withcolor white; draw q withpen pencircle scaled 0.2mm withcolor black ; fill q withcolor black; ) enddef ; for i=0 step 2cm until 8cm : for j=0 step 4cm until 12cm : draw MyShape shifted (i,j) ; endfor ; endfor ; \stopMPpage there are picture variables, so picture pp ; pp := image(...) ; can be used I used millimeters here because it just feels more natural to me, that's what textile crafts does (when not based on inches like quilting and scrapbooking...). The measurements won't be shown anywhere - these are graphs or pictograms, not real pictures - so I can still switch to using something else. Besides, if the building block approach works, there isn't that much to be changed, get the first block right and the rest can be calculated from there. mm are okay, alternative use no dimension, just numbers and scale afterwards: currentpicture := currentpicture xsized 10cm ; or so. PS. Today's craft related metaphor: I feel just like I was staring at a messed up skein of yarn: I know that I'm now holding one of the ends, I thus can start to untangle the knot - and the more I pry loose, the less there's left to sort out. However, in the beginning the process tends to be very slow and awkward... beware, metapost is addictive once you get better in it, (btw, a talk about this will fit nicely in the upcoming eurotex theme) Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477
[NTG-context] metapost fonts
Hello, In a document I'm writing I'm using urw-garamond font successfully. However I also use metaUML library for metapost where I'd like to have helvetica (or nimbus, heros, etc.). For latin modern sans, I can use this: string metauml_defaultFont; metauml_defaultFont:=ec-lmss10; But this only works for latin modern sans (which I don't like combined with urwgaramond) but not helvetica. I've tried to use some of txfonts and tex-gyre fonts (which use helvetica/heros/nimbus for their sans-serif) by writing metauml_defaultFont:=txss and metauml_defaultFont:=ec-qhvcb but I get an error pdftex (file rtxss): Font rtxss at 600 not found. I've installed the latest context standalone. Is there any other way to use helvetica in metapost/metauml or how to troubleshoot this error? Thanks, matej ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost fonts
On Fri, Mar 16, 2012 at 10:17, Matej Barič wrote: Hello, In a document I'm writing I'm using urw-garamond font successfully. However I also use metaUML library for metapost where I'd like to have helvetica (or nimbus, heros, etc.). For latin modern sans, I can use this: string metauml_defaultFont; metauml_defaultFont:=ec-lmss10; But this only works for latin modern sans (which I don't like combined with urwgaramond) but not helvetica. I've tried to use some of txfonts and tex-gyre fonts (which use helvetica/heros/nimbus for their sans-serif) by writing metauml_defaultFont:=txss and metauml_defaultFont:=ec-qhvcb but I get an error pdftex (file rtxss): Font rtxss at 600 not found. I've installed the latest context standalone. Is there any other way to use helvetica in metapost/metauml or how to troubleshoot this error? I'm almost sure that the reason are missing lines describing those fonts in pdftex.map. It might be that your example would work fine with TeX Live or MikTeX out of the box. I have never used metauml and I'm not sure what it does. Another reason could be lack of fonts that you desire to use (but txfonts are present). Does including original-youngryu-tx.map with command fontmapfile (or command fontmapline) help you to get rtxss working? If not, can you please send a minimal example? ConTeXt uses different mechanisms to get the fonts inside metapost code working, but metauml is most certainly not aware of any of those, so it cannot take any advantage of that. Mojca ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] MetaFun: MetaPost example works with `mpost` but not embedded in ConTeXt: `! Redundant equation.`
Dear ConTeXt folks,
looking for graphics example and therefore searching the list I found
the answer from David Arnold in the ntg-context list thread »OT: looking
for metapost/fun examples« [1].
It is for plain MetaPost and works fine with `mpost` after making sure
to remove the line breaks inserted by the mail program.
I then copied it into `\{start,stop}useMPgraphic`, removed the `end ;`
and `{begin,end}fig` and replaced `{e,b}tex` by `textext()` but still
get the following error.
! terminal: ! Redundant equation.
to be read again
;
* ...500; dt:=(tstop-tstart)/N; (b-a)*ux=1.75in;
(d-c)*uy=1.75in;
q=(a,c)-...
! Redundant equation.
to be read again
;
* ...start)/N; (b-a)*ux=1.75in; (d-c)*uy=1.75in;
q=(a,c)--(b,c)--(b,d)--(a...
.
system tex error on line 39 in file arnold-2005.tex:
terminal: ! Redundant equation.
to be read again
;
* ...500; dt:=(tstop-tstart)/N; (b-a)*ux=1.75in;
(d-c)*uy=1.75in;
q=(a,c)-...
! Redundant equation.
to be read again
;
* ...start)/N; (b-a)*ux=1.75in; (d-c)*uy=1.75in;
q=(a,c)--(b,c)--(b,d)--(a...
Does someone have an idea why this fails and how to fix it?
Thanks,
Paul
[1] http://www.ntg.nl/pipermail/ntg-context/2005/009928.html
%This file creates two figures associated with the
%system x'=f(x,y), y'=g(x,y)
%1. Plots the graphs of x(t) and y(t)
%2. Plots the graph of (x(t),y(t)) in the phase plane.
%verbatimtex
%\input mtplain
%etex
%Generate standard eps
prologues:=2;
beginfig(0);
%Place RHS of x'=f(t,x,y) here
def fxy(expr t, x, y)=
(0.4-0.01*y)*x
enddef;
%Place RHS of y'=g(t,x,y) here
def gxy(expr t, x, y)=
(-0.3+0.005*x)*y
enddef;
%Declare some variables
path q, trajx, trajy;
pair L, R, B, T, xt, yt;
numeric sx[], sy[];
%Initialize clipping window
a:=0; b:=40; %left and right of viewing rectangle
c:=0; d:=150; %bottom and top of viewing rectangle
%Initialize timespan
tstart:=a;
tstop:=b;
%Initialize number of points to be plotted
N:=500;
%Calculate time increment dt for Euler's method
dt:=(tstop-tstart)/N;
%Scaling factors for horizontal and vertical axes. Note that this produces
%an image that is 2 inches by 2 inches.
(b-a)*ux=1.75in;
(d-c)*uy=1.75in;
%Clipping boundary
q=(a,c)--(b,c)--(b,d)--(a,d)--cycle;
%Use Runge-Kutta4 to create path (t,x(t))
%Choose initial condition
t:=tstart;
x:=40;
y:=20;
trajx:=(t,x);
forever:
sx1:=fxy(t,x,y);
sy1:=gxy(t,x,y);
sx2:=fxy((t+dt/2),(x+dt*sx1/2),(y+dt*sy1/2));
sy2:=gxy((t+dt/2),(x+dt*sx1/2),(y+dt*sy1/2));
sx3:=fxy((t+dt/2),(x+dt*sx2/2),(y+dt*sy2/2));
sy3:=gxy((t+dt/2),(x+dt*sx2/2),(y+dt*sy2/2));
sx4:=fxy((t+dt),(x+dt*sx3),(y+dt*sy3));
sy4:=gxy((t+dt),(x+dt*sx3),(y+dt*sy3));
x:=x+dt*(sx1+2*sx2+2*sx3+sx4)/6;
y:=y+dt*(sy1+2*sy2+2*sy3+sy4)/6;
t:=t+dt;
trajx:=trajx..(t,x);
exitif ((ttstop) or (tb) or (xc) or (xd));
endfor;
%Use Runge-Kutta4 to create path (t,y(t))
%Choose initial condition
t:=tstart;
x:=40;
y:=20;
trajy:=(t,y);
forever:
sx1:=fxy(t,x,y);
sy1:=gxy(t,x,y);
sx2:=fxy((t+dt/2),(x+dt*sx1/2),(y+dt*sy1/2));
sy2:=gxy((t+dt/2),(x+dt*sx1/2),(y+dt*sy1/2));
sx3:=fxy((t+dt/2),(x+dt*sx2/2),(y+dt*sy2/2));
sy3:=gxy((t+dt/2),(x+dt*sx2/2),(y+dt*sy2/2));
sx4:=fxy((t+dt),(x+dt*sx3),(y+dt*sy3));
sy4:=gxy((t+dt),(x+dt*sx3),(y+dt*sy3));
x:=x+dt*(sx1+2*sx2+2*sx3+sx4)/6;
y:=y+dt*(sy1+2*sy2+2*sy3+sy4)/6;
t:=t+dt;
trajy:=trajy..(t,y);
exitif ((ttstop) or (tb) or (yc) or (yd));
endfor;
%Draw the paths x(t) and y(t) and clip them to bounding box
draw trajx xscaled ux yscaled uy withcolor red;
draw trajy xscaled ux yscaled uy withcolor red dashed evenly;
clip currentpicture to (q xscaled ux yscaled uy);
%Label graph x(t) and initial condition
len:= 0.65*(length trajx);
xt:=point len of trajx;
label.urt(btex $\scriptstyle x(t)$ etex, (xt xscaled ux yscaled uy));
%Label graph y(t) and initial condition
len:= 0.5*(length trajy);
yt:=point len of trajy;
label.lrt(btex $\scriptstyle y(t)$ etex, (yt xscaled ux yscaled uy));
%Initialize left and right endpoints on time-axis
L=(a*ux,0);R=(b*ux,0);
%Draw and label t-axis
drawarrow L--R;
label.rt(btex $\scriptstyle t$ etex,(b*ux,0));
%Initialize bottom and top endpoints on time-axis
B=(0,c*uy);T=(0,d*uy);
%Draw and label vertical axis
drawarrow B--T;
label.lft(btex $\scriptstyle 0$ etex, B);
label.lft(btex $\scriptstyle 150$ etex, T);
endfig;
beginfig(2);
%Make some variables local
save ux, uy
Re: [NTG-context] MetaFun: MetaPost example works with `mpost` but not embedded in ConTeXt: `! Redundant equation.`
On 2011-12-11 Paul Menzel paulepan...@users.sourceforge.net wrote:
[…]
I then copied it into `\{start,stop}useMPgraphic`,
removed the `end ;` and `{begin,end}fig` and replaced
`{e,b}tex` by `textext()` but still get the following
error.
I didn't check you code (try to make a minimal example
next time), but the problem seems to be the combination of
equations and labels. When labels are present, the file is
processed twice and the equations are also read twice (in
MkIV). It hasn't been fixed for ages, that probably means
it will stay.
One workaround is to substitute the equations with
assignments or to “save” the values beforehand.
See also:
http://archive.contextgarden.net/message/20101205.035356.1b7bfb72.en.html
Marco
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Re: [NTG-context] `\{start, stop}MPpage`: MetaPost figure does not fit canvas(?) in resulting PDF file
On 7-12-2011 20:36, Paul Menzel wrote: Dear ConTeXt folks, using the following example \starttext \startMPpage draw (0,0)--(10,10)--(15,5)--(20,10); draw (0,0)--(0,10)--(10,10)--(10,5)--(15,5)--(15,10)--(20,10) withcolor blue; \stopMPpage \stoptext it looks like the bottom is not included in the resulting PDF file and at the top there is too much room. (So it looks like the figure is moved too far to the bottom.) Using the examples from the Wiki [1] with circles works though. it has to do with the size and topskip interference .. somewhat bigger images work ok (hopefully fixed in next beta) - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] `\{start, stop}MPpage`: MetaPost figure does not fit canvas(?) in resulting PDF file
Dear ConTeXt folks, using the following example \starttext \startMPpage draw (0,0)--(10,10)--(15,5)--(20,10); draw (0,0)--(0,10)--(10,10)--(10,5)--(15,5)--(15,10)--(20,10) withcolor blue; \stopMPpage \stoptext it looks like the bottom is not included in the resulting PDF file and at the top there is too much room. (So it looks like the figure is moved too far to the bottom.) Using the examples from the Wiki [1] with circles works though. I am using ConTeXt Standalone. ConTeXt ver: 2011.11.25 21:29 MKIV fmt: 2011.11.25 int: english/english Thanks, Paul [1] http://wiki.contextgarden.net/Mpgraphic test.pdf Description: Adobe PDF document \starttext \startMPpage draw (0,0)--(10,10)--(15,5)--(20,10); draw (0,0)--(0,10)--(10,10)--(10,5)--(15,5)--(15,10)--(20,10) withcolor blue; \stopMPpage \startMPpage draw fullcircle scaled 2cm; dotlabel.bot(textext((0,0)),origin); \stopMPpage \startMPpage draw fullcircle scaled 2cm; drawarrow (0,0)--(1cm,0); label.bot(textext($r$),(5mm,0)); \stopMPpage \stoptext signature.asc Description: This is a digitally signed message part ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Escaping a special character in a MetaPost figure within a ConTeXt document fails
Thanks for the reply!
Found I needed to use \letterbackslash\letterhash for this to work. Does that
make sense?
On Nov 30, 2011, at 10:37 AM, Aditya Mahajan wrote:
Try:
using \letterhash instead of \#
or
\startasciimode
\def \FrontMatterTitle {
\startreusableMPgraphic{frontmattertitle:\overlaywidth:\overlayheight}
matter_paper_width := 4.25in;
matter_paper_height := 6.875in;
front_left_margin := 0.3889in;
top_margin := 0.3472in;
draw (0, 0)--(matter_paper_width, matter_paper_height)
withpen pencircle scaled 1bp withcolor white;
picture titleText;
%% == HERE IS THE SOURCE OF THE PROBLEM ==
titleText := btex {\vbox{\hsize 2.7291667in \baselineskip 38.0pt
\setupalign[flushleft,hyphenated,verytolerant]
\TitleFont THE BEGINNINGS OF #BOOM}} etex;
%% NOTE I changed \# to # and % to %%
labeloffset := 0bp;
label.lrt(titleText, (front_left_margin,
matter_paper_height - top_margin));
\stopreusableMPgraphic
\reuseMPgraphic{frontmattertitle:\overlaywidth:\overlayheight}
}
\stopasciimode
You can also use \framed[width=2.73in,
foregroundstyle={\TitleFont\setupinterlinespace[38pt],
align={flushleft, }]{The } instead of explicit \vbox.
Aditya
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[NTG-context] metapost question
In MetaPost: After putting something in a picture, one can draw its boundaries with draw boundingbox thepicture. Is it possible to obtain at that point the dimensions of this boudingbox in order to do some calculations with them? Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question
Am 01.12.2011 23:25, schrieb Hans van der Meer: In MetaPost: After putting something in a picture, one can draw its boundaries with draw boundingbox thepicture. Is it possible to obtain at that point the dimensions of this boudingbox in order to do some calculations with them? urcorner boundingbox currentpicture should hold the wanted values (untested); maybe you have to take 'llcorner' into account too. Best wishes, Peter Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Escaping a special character in a MetaPost figure within a ConTeXt document fails
I have escaped the '#' character in the usual way, using a backslash, as '\#'
in a btex...etex picture as part of a MetaPost figure created within a ConTeXt
document, but the escaped character still causes the ConTeXt processing to fail.
Here is an example...
\pdfminorversion=5
\definepapersize[LG1][width=4.25in,height=6.875in]
\definepapersize[LP1][width=4.25in,height=6.875in]
\setuppapersize[LG1][LP1]
\definelayout[frontmatter]
[topspace=0.in,header=0.5556in,height=6.4305556in,footer=0.6944in,
backspace=1.056in,width=2.861in,location=middle,
leftmargindistance=0.in,rightmargindistance=0.in,
leftmargin=0.8333in,rightmargin=0.in]
\definefont[TitleFont][Serif sa 3.5]
\definecolor[TransparentWhite][b=1,t=0,a=1]
\def \FrontMatterTitle {
\startreusableMPgraphic{frontmattertitle:\overlaywidth:\overlayheight}
matter_paper_width := 4.25in;
matter_paper_height := 6.875in;
front_left_margin := 0.3889in;
top_margin := 0.3472in;
draw (0, 0)--(matter_paper_width, matter_paper_height)
withpen pencircle scaled 1bp withcolor white;
picture titleText;
% == HERE IS THE SOURCE OF THE PROBLEM ==
titleText := btex {\vbox{\hsize 2.7291667in \baselineskip 38.0pt
\setupalign[flushleft,hyphenated,verytolerant]
\TitleFont THE BEGINNINGS OF \#BOOM}} etex;
labeloffset := 0bp;
label.lrt(titleText, (front_left_margin,
matter_paper_height - top_margin));
\stopreusableMPgraphic
\reuseMPgraphic{frontmattertitle:\overlaywidth:\overlayheight}
}
\defineoverlay[frontmattertitle][\FrontMatterTitle]
\starttext
\setuplayout[frontmatter]
{\TransparentWhite\title{...}}
\setupbackgrounds[page][background={{frontmattertitle}},state=repeat]
{\TransparentWhite\midaligned{...}}
\stoptext
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Re: [NTG-context] Escaping a special character in a MetaPost figure within a ConTeXt document fails
Try:
using \letterhash instead of \#
or
\startasciimode
\def \FrontMatterTitle {
\startreusableMPgraphic{frontmattertitle:\overlaywidth:\overlayheight}
matter_paper_width := 4.25in;
matter_paper_height := 6.875in;
front_left_margin := 0.3889in;
top_margin := 0.3472in;
draw (0, 0)--(matter_paper_width, matter_paper_height)
withpen pencircle scaled 1bp withcolor white;
picture titleText;
%% == HERE IS THE SOURCE OF THE PROBLEM ==
titleText := btex {\vbox{\hsize 2.7291667in \baselineskip 38.0pt
\setupalign[flushleft,hyphenated,verytolerant]
\TitleFont THE BEGINNINGS OF #BOOM}} etex;
%% NOTE I changed \# to # and % to %%
labeloffset := 0bp;
label.lrt(titleText, (front_left_margin,
matter_paper_height - top_margin));
\stopreusableMPgraphic
\reuseMPgraphic{frontmattertitle:\overlaywidth:\overlayheight}
}
\stopasciimode
You can also use \framed[width=2.73in,
foregroundstyle={\TitleFont\setupinterlinespace[38pt],
align={flushleft, }]{The } instead of explicit \vbox.
Aditya
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[NTG-context] Math in metapost
I would like to put some math in metapost pictures. For the moment I am using
textext for the typesetting in my metapost macro: pic :=
textext(\setbox0=\hbox{\color[textcolor]labeltext}\dp0=0pt\box0);
picture pic will be placed in the metapost figure.
Simple math like $p=2$ works fine, but the system chokes on something like the
following matrix:
$\pmatrix{p_{0|0}\cr}$ (it does fine in ConTeXt itself).
The error is: ! Only one # is allowed per tab.
system tex error on line 6 in file Info/kanaalmatrix.tex: Only one # is
allowed per tab ...
Perhaps I am too optimistic about textext's possibilities. But how can I
accomplish the placement of these and more elaborate formulae in metapost
pictures using ConTeXt? It is of the essence for a series of Powerpoint slides
I am preparing, wheein these formulae must be placed as individual pictures.
Hans van der Meer
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Re: [NTG-context] Math in metapost
Hi,
I am not a specialist, but I use the « btex etex » commands, such as
dotlabel.bot (btex \switchtobodyfont[10pt] \strut $R$ etex, z1)
I just tested with the latest beta, and everything works fine, but not the
\pmatrix construct (I tried also with ${k}\choose{n}$, which works fine too.
I put my test file in which some maths is used in a MetaPost graphic here:
http://dl.dropbox.com/u/4316076/test-graphique.tex
http://dl.dropbox.com/u/4316076/test-graphique.pdf
Best regards: OK
On 30 nov. 2011, at 20:59, Hans van der Meer wrote:
I would like to put some math in metapost pictures. For the moment I am using
textext for the typesetting in my metapost macro: pic :=
textext(\setbox0=\hbox{\color[textcolor]labeltext}\dp0=0pt\box0);
picture pic will be placed in the metapost figure.
Simple math like $p=2$ works fine, but the system chokes on something like
the following matrix:
$\pmatrix{p_{0|0}\cr}$ (it does fine in ConTeXt itself).
The error is: ! Only one # is allowed per tab.
system tex error on line 6 in file Info/kanaalmatrix.tex: Only one # is
allowed per tab ...
Perhaps I am too optimistic about textext's possibilities. But how can I
accomplish the placement of these and more elaborate formulae in metapost
pictures using ConTeXt? It is of the essence for a series of Powerpoint
slides I am preparing, wheein these formulae must be placed as individual
pictures.
Hans van der Meer
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%%
Otared Kavian
Département de Mathématiques
Université de Versailles Saint-Quentin
Bâtiment Fermat
45 avenue des Etats Unis
78035 Versailles cedex
Téléphone: +33 1 39 25 46 42
Secrétariat: +33 1 39 25 46 44
Secrétariat: +33 1 39 25 46 46
e-mail: otared.kav...@math.uvsq.fr
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Re: [NTG-context] Math in metapost
On 30-11-2011 20:59, Hans van der Meer wrote:
I would like to put some math in metapost pictures. For the moment I am using textext for the typesetting in my metapost
macro: pic :=
textext(\setbox0=\hbox{\color[textcolor]labeltext}\dp0=0pt\box0);
picture pic will be placed in the metapost figure.
Simple math like $p=2$ works fine, but the system chokes on something like the
following matrix:
$\pmatrix{p_{0|0}\cr}$ (it does fine in ConTeXt itself).
The error is: ! Only one # is allowed per tab.
system tex error on line 6 in file Info/kanaalmatrix.tex: Only one # is
allowed per tab ...
Perhaps I am too optimistic about textext's possibilities. But how can I
accomplish the placement of these and more elaborate formulae in metapost
pictures using ConTeXt? It is of the essence for a series of Powerpoint slides
I am preparing, wheein these formulae must be placed as individual pictures.
you can patch pmatrix:
\unexpanded\def\pmatrix#1%
{\left(\matrix{#1}\right)}
(i'll make the lot unexpandable)
btw, for large chunks you can consider using setups
\startsetups lots-of-math
\stopsetups
... \textext(\setup[lots-of-math])
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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[NTG-context] Metapost graphics in separate file, help needed
Dear List,
I am experiencing a strange problem. I have a project, essentially with the
following structure (desperate attempt to keep track of my stuff):
mainfile.mkiv:
% BOF
...lots of setups and settings...
\starttext
\input metapostgraphics.mkiv
\input chapter1.mkiv
\input chapter2.mkiv
\input chapter3.mkiv
\stoptext
% EOF
I generate the PDF with 'context mainfile.mkiv'
So far for the structure. Now my problem:
metapostgraphics.mkiv contains several (4) metapost graphics with
\startuseMPgraphics{nameX} ... \stopuseMPgraphics.
In chapter2.mkiv I want to use them with \useMPgraphics{nameX}.
It worked well until today, when I added a fifth graphic. Then I suddenly get a
frame with 'undefined' inside instead of the picture.
I tried everything, checked for typos, tried different names, double checked
the MP-code etc. but to no avail.
It only works if I put the exact same MP-code between \startMPcode \stopMPcode
directly in the chapter2.mkiv
What is wrong here? Am I missing something? Did I get the input mechanism all
wrong?
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Re: [NTG-context] Metapost graphics in separate file, help needed
On 23-11-2011 19:23, Christian wrote:
Dear List,
I am experiencing a strange problem. I have a project, essentially with the
following structure (desperate attempt to keep track of my stuff):
mainfile.mkiv:
% BOF
lots of setups and settings...
\starttext
\input metapostgraphics.mkiv
\input chapter1.mkiv
\input chapter2.mkiv
\input chapter3.mkiv
\stoptext
% EOF
I generate the PDF with 'context mainfile.mkiv'
So far for the structure. Now my problem:
metapostgraphics.mkiv contains several (4) metapost graphics with
\startuseMPgraphics{nameX} ... \stopuseMPgraphics.
In chapter2.mkiv I want to use them with \useMPgraphics{nameX}.
It worked well until today, when I added a fifth graphic. Then I suddenly get a
frame with 'undefined' inside instead of the picture.
I tried everything, checked for typos, tried different names, double checked
the MP-code etc. but to no avail.
It only works if I put the exact same MP-code between \startMPcode \stopMPcode
directly in the chapter2.mkiv
What is wrong here? Am I missing something? Did I get the input mechanism all
wrong?
What happens if you make a simple file with the 4 \useMPgraphics in it
.. does that one process? Maybe there is a problem with the graphics in
the sense that you cannto run them all in a row.
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] Metapost graphics in separate file, help needed
It only works if I put the exact same MP-code between \startMPcode \stopMPcode directly in the chapter2.mkiv What is wrong here? Am I missing something? Did I get the input mechanism all wrong? What happens if you make a simple file with the 4 \useMPgraphics in it .. does that one process? Maybe there is a problem with the graphics in the sense that you cannto run them all in a row. You can also try adding begingroup; endgroup; inside each MP figure. I always wished that this was the default behaviour. Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost graphics in separate file, help needed
Thanks for the suggestions so far. I' currently testing Hans' idea and it seems to be a problem with caching. The simple file I made where I just use each graphic runs into an error, but the corresponding code (undefined control sequence '\sb') is definitely not in the current source file of the graphics. How do I clear the cache to force recalculation of the MP-graphics? -Ursprüngliche Nachricht- Von: ntg-context-boun...@ntg.nl [mailto:ntg-context-boun...@ntg.nl] Im Auftrag von Aditya Mahajan Gesendet: Mittwoch, 23. November 2011 20:33 An: mailing list for ConTeXt users Betreff: Re: [NTG-context] Metapost graphics in separate file, help needed It only works if I put the exact same MP-code between \startMPcode \stopMPcode directly in the chapter2.mkiv What is wrong here? Am I missing something? Did I get the input mechanism all wrong? What happens if you make a simple file with the 4 \useMPgraphics in it .. does that one process? Maybe there is a problem with the graphics in the sense that you cannto run them all in a row. You can also try adding begingroup; endgroup; inside each MP figure. I always wished that this was the default behaviour. Aditya __ _ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg- context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net __ _ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost graphics in separate file, help needed
On 23-11-2011 20:32, Aditya Mahajan wrote: It only works if I put the exact same MP-code between \startMPcode \stopMPcode directly in the chapter2.mkiv What is wrong here? Am I missing something? Did I get the input mechanism all wrong? What happens if you make a simple file with the 4 \useMPgraphics in it .. does that one process? Maybe there is a problem with the graphics in the sense that you cannto run them all in a row. You can also try adding begingroup; . endgroup; inside each MP figure. I always wished that this was the default behaviour. Actually, last week I was tempted to do that but I cannot oversee the consequences. It is probably harmless. The interesting thing is that beginfig/endfig have grouping but somehow it does not work out well. Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost graphics in separate file, help needed
Oh boy. This is embarrassing! Turns out the file that was open in notepad++ was not the one in the path of my project, but had the exact same name. And I was editing this sucker instead of the real file. I guess I should reload my files during sessions. insert double face-palm here Problem solved, it's sitting right in front of the screen and is banging his head hard against the wall now. I'm truly sorry that I have wasted your time. -Ursprüngliche Nachricht- Von: ntg-context-boun...@ntg.nl [mailto:ntg-context-boun...@ntg.nl] Im Auftrag von Hans Hagen Gesendet: Mittwoch, 23. November 2011 20:59 An: mailing list for ConTeXt users Betreff: Re: [NTG-context] Metapost graphics in separate file, help needed On 23-11-2011 20:32, Aditya Mahajan wrote: It only works if I put the exact same MP-code between \startMPcode \stopMPcode directly in the chapter2.mkiv What is wrong here? Am I missing something? Did I get the input mechanism all wrong? What happens if you make a simple file with the 4 \useMPgraphics in it .. does that one process? Maybe there is a problem with the graphics in the sense that you cannto run them all in a row. You can also try adding begingroup; . endgroup; inside each MP figure. I always wished that this was the default behaviour. Actually, last week I was tempted to do that but I cannot oversee the consequences. It is probably harmless. The interesting thing is that beginfig/endfig have grouping but somehow it does not work out well. Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - __ _ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg- context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net __ _ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost graphics in separate file, help needed
On 23-11-2011 20:50, Christian wrote: How do I clear the cache to force recalculation of the MP-graphics? fyi: There is no cache in mkiv as mp is run internally, which is why it is so fast (and in mkii caching is clever enough to determine a change). Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Arrows and boxes in metapost.
On 14-11-2011 20:31, Christian wrote:
Hello,
I need a simple graphic that shows some boxes (frames) with text in it and has
some arrows pointing to and from these boxes. (examples 267 and 268 on this
page [1])
I was hoping to do this in MetaPost.
Earlier this year this question went un-answered on this list:
How to use boxit MetaPost macros with ConTeXt minimals?
So, is there a solution or do I have to use
label.rt(btex \framed[width=3cm,align=middle]{Text} etex, (1u,1.5u));
draw thetextext.rt(\framed[width=3cm,align=middle]{Text},(1u,1.5u))
I never used the boxit macros but if they are normal mp they should just
work; otherwise post a mininimal example (more change of an answer).
Hans
-
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Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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| www.pragma-pod.nl
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[NTG-context] Arrows and boxes in metapost.
Hello,
I need a simple graphic that shows some boxes (frames) with text in it and has
some arrows pointing to and from these boxes. (examples 267 and 268 on this
page [1])
I was hoping to do this in MetaPost.
Earlier this year this question went un-answered on this list:
How to use boxit MetaPost macros with ConTeXt minimals?
So, is there a solution or do I have to use
label.rt(btex \framed[width=3cm,align=middle]{Text} etex, (1u,1.5u));
Which really feels uncomfortable in this case.
Best regards
Christian
[1] http://tex.loria.fr/prod-graph/zoonekynd/metapost/metapost.html
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Re: [NTG-context] macro string in metapost
On 1-11-2011 23:21, Meer, H. van der wrote:
The goal is to make the following string in metapost:
string s; where s must become \MPcolor{Blue}.
and ultimately execute this at the right moment with: scantokens s;
The following makes s = MPcolor{Blue}:
s := MPcolor char oct134 char oct173 Blue char oct134 char
oct175;
But I seem unable to add a \ in front of it without expanding the string by
TeX. Thus it does not work to put:
s := char oct134 MPcolor char oct134 char oct173 Blue char
oct134 char oct175;
Placing a \noexpand in front does not help.
\MPcolor is expanded when the code is passed to mp so delaying is not
possible and once mp runs it already sees the colors
what you want is something
fill fullcircle scaled 10cm withcolor .5 * namedcolor(gray) ;
fill fullcircle scaled 5cm withcolor namedcolor(red) ;
fill fullcircle scaled 5cm withcolor namedcolor(green) ;
fill fullcircle scaled 5cm withcolor namedcolor(blue) ;
(I have that as experimental code but will move it to the regular code)
Hans
-
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Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
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[NTG-context] macro string in metapost
The goal is to make the following string in metapost:
string s; where s must become \MPcolor{Blue}.
and ultimately execute this at the right moment with: scantokens s;
The following makes s = MPcolor{Blue}:
s := MPcolor char oct134 char oct173 Blue char oct134
char oct175;
But I seem unable to add a \ in front of it without expanding the string by
TeX. Thus it does not work to put:
s := char oct134 MPcolor char oct134 char oct173 Blue
char oct134 char oct175;
Placing a \noexpand in front does not help.
How to?
Hans van der Meer
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Re: [NTG-context] MetaPost: Confusion with `function()` and `xyscaled`
Am Freitag, den 21.10.2011, 18:08 +0200 schrieb Peter Rolf: Am 21.10.2011 17:26, schrieb Paul Menzel: Am Freitag, den 21.10.2011, 17:02 +0200 schrieb Peter Rolf: I agree, this is confusing on the first sight. But scaling is not meant as 'scaling to' a dimension. In fact is is just a simple multiplication. The reason why it seems to work this way with 'fullsquare' and such predefined paths is, that they have a 'neutral' size/scale (bounding box size of filled path is (1pt,1pt)). So how can I find out what the dimension of the path of a function is? Not scaling it, it also looked pretty small, so I am guessing (1pt,1pt). I guess in this case its size is (10,log(10)) + pen size when drawn. That was it kind of. Probably the most of my confusion resulting from the use of the inverse function. So all in all the width is 1 – the x-coordinates seem to be scaled to the width of 1 – and the height is 10, as ten is the highest value. Therefore the width has to be multiplied with 10cm to get it to 10cm and since the height it 10 already multiplying it with 2cm gets it to 20cm. Multiplying such a path with (x,y) gives an object with size (1*x,1*y). In general: if the bounding box of an object has the size (a,b) and you scale it with (x,y), the resulting object has a size of (ax,by). That's all the magic. but if you use numbers with a unit than it should not be multiplied but expanded to that value, should not it? Otherwise I am unsure how multiplication works with a unit. 1pt is the base unit in MP (used if no dimension is given; probably stored as 65536sp (scaled point) units). In the manual I only found bp for »big point«, which equal PostScript points equaling 1/72 of an inch. Now if you use pure numerics for scale, such as 'xscaled 2', this is interpreted as '2pt' (or 2*65536sp). If you use any dimension, it is also converted into scaled points. All the same for MP. If I'm right this should all be the same (untested) xscaled 2 xscaled 2pt This gives the same result. xscaled (2*65536sp) I could not test the above because the numbers got too big and MetaPost complained. 1 = 1pt = 65536sp […] Thanks, Paul signature.asc Description: This is a digitally signed message part ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] MetaPost: Confusion with `function()` and `xyscaled`
Am 23.10.2011 16:12, schrieb Paul Menzel: Am Freitag, den 21.10.2011, 18:08 +0200 schrieb Peter Rolf: Am 21.10.2011 17:26, schrieb Paul Menzel: Am Freitag, den 21.10.2011, 17:02 +0200 schrieb Peter Rolf: I agree, this is confusing on the first sight. But scaling is not meant as 'scaling to' a dimension. In fact is is just a simple multiplication. The reason why it seems to work this way with 'fullsquare' and such predefined paths is, that they have a 'neutral' size/scale (bounding box size of filled path is (1pt,1pt)). So how can I find out what the dimension of the path of a function is? Not scaling it, it also looked pretty small, so I am guessing (1pt,1pt). I guess in this case its size is (10,log(10)) + pen size when drawn. That was it kind of. Probably the most of my confusion resulting from the use of the inverse function. So all in all the width is 1 – the x-coordinates seem to be scaled to the width of 1 – and the height is 10, as ten is the highest value. Therefore the width has to be multiplied with 10cm to get it to 10cm and since the height it 10 already multiplying it with 2cm gets it to 20cm. I see. I must admit that I haven't looked deeper into function (never used it). If I want to test the bounding box of a graphic, I normally use a small debugging macro (last code line of nearly all of my graphics). It simply draws a small red frame at the bounding box borders. You can use the 'Measuring Tool' in Acrobat (also Reader?) or even better the 'Object Inspector' to get the exact size. minlinewidth:= .143pt; def wirepen= pencircle scaled minlinewidth enddef ; def drawbb = drawoptions() ; interim linejoin:= mitered; draw (llcorner currentpicture) shifted ( .5minlinewidth, .5minlinewidth) -- (lrcorner currentpicture) shifted (-.5minlinewidth, .5minlinewidth) -- (urcorner currentpicture) shifted (-.5minlinewidth,-.5minlinewidth) -- (ulcorner currentpicture) shifted ( .5minlinewidth,-.5minlinewidth) -- cycle withpen wirepen withcolor red; % draw boundingbox currentpicture withpen wirepen withcolor red ; % was not neutral! enddef ; Multiplying such a path with (x,y) gives an object with size (1*x,1*y). In general: if the bounding box of an object has the size (a,b) and you scale it with (x,y), the resulting object has a size of (ax,by). That's all the magic. but if you use numbers with a unit than it should not be multiplied but expanded to that value, should not it? Otherwise I am unsure how multiplication works with a unit. 1pt is the base unit in MP (used if no dimension is given; probably stored as 65536sp (scaled point) units). In the manual I only found bp for »big point«, which equal PostScript points equaling 1/72 of an inch. It can't be helped, I always mix this up. :-D It's 'bp' for MP and for Adobe products, and 'pt' for TeX. Ask me in a few weeks and I can't give the correct answer. Now if you use pure numerics for scale, such as 'xscaled 2', this is interpreted as '2pt' (or 2*65536sp). If you use any dimension, it is also converted into scaled points. All the same for MP. If I'm right this should all be the same (untested) xscaled 2 xscaled 2pt This gives the same result. xscaled (2*65536sp) I could not test the above because the numbers got too big and MetaPost complained. My fault. In the meantime I have checked it and 'sp' is not a predefined constant in MP (couldn't find it in the manual). Also never used it in MP. 1 = 1pt = 65536sp […] Thanks, Paul ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] MetaPost: Confusion with `function()` and `xyscaled`
On 23-10-2011 17:17, Peter Rolf wrote: If I want to test the bounding box of a graphic, I normally use a small debugging macro (last code line of nearly all of my graphics). It simply draws a small red frame at the bounding box borders. You can use the 'Measuring Tool' in Acrobat (also Reader?) or even better the 'Object Inspector' to get the exact size. minlinewidth:= .143pt; def wirepen= pencircle scaled minlinewidth enddef ; def drawbb = drawoptions() ; interim linejoin:= mitered; draw (llcorner currentpicture) shifted ( .5minlinewidth, .5minlinewidth) -- (lrcorner currentpicture) shifted (-.5minlinewidth, .5minlinewidth) -- (urcorner currentpicture) shifted (-.5minlinewidth,-.5minlinewidth) -- (ulcorner currentpicture) shifted ( .5minlinewidth,-.5minlinewidth ) -- cycle withpen wirepen withcolor red; % draw boundingbox currentpicture withpen wirepen withcolor red ; % was not neutral! enddef ; draw boundingbox currentpicture enlarged -.5minlinewidth withpen wirepen withcolor red ; My fault. In the meantime I have checked it and 'sp' is not a predefined constant in MP (couldn't find it in the manual). Also never used it in MP. 1 = 1pt = 65536sp sp's would overflow anyway Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] metapost question
I cannot find the answer to the following question in Knuth's Metafont book. The following definition with a trailing text argument: def mydef (expr a, b, c) text modifier = if modifier = empty: else: fi enddef; How can I do the switch on an empty or nonempty modifier argument? It is not a string because calling its length fails with an error. I must do the switch, because fill modifier with an empty modifier gives horrible results. Usage would be calls like: mydef(1,2,3) withcolor green; % with modifier text mydef(1,2,3); % without modifier text Thanks in advance. Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question
Am 21.10.2011 15:05, schrieb Hans van der Meer: I cannot find the answer to the following question in Knuth's Metafont book. The following definition with a trailing text argument: def mydef (expr a, b, c) text modifier = if modifier = empty: Have you already tried if modifier = : else: fi enddef; How can I do the switch on an empty or nonempty modifier argument? It is not a string because calling its length fails with an error. I must do the switch, because fill modifier with an empty modifier gives horrible results. Usage would be calls like: mydef(1,2,3) withcolor green; % with modifier text mydef(1,2,3); % without modifier text Thanks in advance. Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] MetaPost: Confusion with `function()` and `xyscaled`
Dear Peter, thank you for your answer. Am Freitag, den 21.10.2011, 17:02 +0200 schrieb Peter Rolf: I agree, this is confusing on the first sight. But scaling is not meant as 'scaling to' a dimension. In fact is is just a simple multiplication. The reason why it seems to work this way with 'fullsquare' and such predefined paths is, that they have a 'neutral' size/scale (bounding box size of filled path is (1pt,1pt)). So how can I find out what the dimension of the path of a function is? Not scaling it, it also looked pretty small, so I am guessing (1pt,1pt). Multiplying such a path with (x,y) gives an object with size (1*x,1*y). In general: if the bounding box of an object has the size (a,b) and you scale it with (x,y), the resulting object has a size of (ax,by). That's all the magic. but if you use numbers with a unit than it should not be multiplied but expanded to that value, should not it? Otherwise I am unsure how multiplication works with a unit. I must admit that this wasn't clear to me before you came up with your question. So thanks for that. :-) Thank you for your answer. As written above it is still not entirely clear to me. I hope you can remedy my last confusion. Thanks a lot, Paul signature.asc Description: This is a digitally signed message part ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question
On 21 okt. 2011, at 17:13, Peter Rolf wrote: Am 21.10.2011 15:05, schrieb Hans van der Meer: I cannot find the answer to the following question in Knuth's Metafont book. The following definition with a trailing text argument: def mydef (expr a, b, c) text modifier = if modifier = empty: Have you already tried if modifier = : else: fi enddef; I tried it now, but it doesn't work. Something like if(TEXT4) =:;fi in the error log. No, Metapost is not happy with this construct. How can I do the switch on an empty or nonempty modifier argument? It is not a string because calling its length fails with an error. I must do the switch, because fill modifier with an empty modifier gives horrible results. Usage would be calls like: mydef(1,2,3) withcolor green; % with modifier text mydef(1,2,3); % without modifier text Thanks in advance. Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] MetaPost: Confusion with `function()` and `xyscaled`
Am 21.10.2011 17:26, schrieb Paul Menzel: Dear Peter, thank you for your answer. Am Freitag, den 21.10.2011, 17:02 +0200 schrieb Peter Rolf: I agree, this is confusing on the first sight. But scaling is not meant as 'scaling to' a dimension. In fact is is just a simple multiplication. The reason why it seems to work this way with 'fullsquare' and such predefined paths is, that they have a 'neutral' size/scale (bounding box size of filled path is (1pt,1pt)). So how can I find out what the dimension of the path of a function is? Not scaling it, it also looked pretty small, so I am guessing (1pt,1pt). I guess in this case its size is (10,log(10)) + pen size when drawn. Multiplying such a path with (x,y) gives an object with size (1*x,1*y). In general: if the bounding box of an object has the size (a,b) and you scale it with (x,y), the resulting object has a size of (ax,by). That's all the magic. but if you use numbers with a unit than it should not be multiplied but expanded to that value, should not it? Otherwise I am unsure how multiplication works with a unit. 1pt is the base unit in MP (used if no dimension is given; probably stored as 65536sp (scaled point) units). Now if you use pure numerics for scale, such as 'xscaled 2', this is interpreted as '2pt' (or 2*65536sp). If you use any dimension, it is also converted into scaled points. All the same for MP. If I'm right this should all be the same (untested) xscaled 2 xscaled 2pt xscaled (2*65536sp) 1 = 1pt = 65536sp I must admit that this wasn't clear to me before you came up with your question. So thanks for that. :-) Thank you for your answer. As written above it is still not entirely clear to me. I hope you can remedy my last confusion. Thanks a lot, Paul ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question
In article 0e2e620e-1148-41ad-9966-54a594fcc...@xs4all.nl, Hans van der Meer havdm...@xs4all.nl wrote: I cannot find the answer to the following question in Knuth's Metafont book. The following definition with a trailing text argument: def mydef (expr a, b, c) text modifier = if modifier = empty: else: fi enddef; How can I do the switch on an empty or nonempty modifier argument? It is not a string because calling its length fails with an error. A text argument is a (more or less) arbitrary sequence of tokens—that is, loosely speaking, any “chunk” of MetaPost code. I must do the switch, because fill modifier with an empty modifier gives horrible results. Usage would be calls like: mydef(1,2,3) withcolor green; % with modifier text mydef(1,2,3); % without modifier text This is the best I could think of: vardef emptytext?@# text t = (str @# = empty.sandwich) enddef; def mydef(expr a,b,c) text t = if begingroup emptytext? empty t sandwich endgroup: % t is empty draw unitsquare scaled 1cm; else: % t is not empty fill unitsquare scaled 1cm t ; fi; enddef; The key is the 'emptytext? empty t sandwich;' line: if t is empty, @# matches 'empty.sandwich', otherwise it matches 'empty' possibly followed by something else (depending on what t actually is). The undelimited text parameter of emptytext? is needed to “swallow” whatever tokens are left (possibly none) after matching the implicit suffix parameter. Note that begingroup and endgroup are necessary in the if clause, otherwise emptytext?'s undelimited text parameter will match beyond the colon. In practice, you should rename 'sandwich' to some token that you are pretty sure will never occur as the beginning of the text argument when you invoke mydef. I'd be glad to hear about other solutions: this question has bugged me for some time… Regards, Nicola ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question
Peter, Thanks for trying to help. Because I solved the problem in another way you might be interested or even benefit from it. The underlying problem was drawing a border around a picture of given dimensions. The border being either colored or left uncolored. The border color should come from a withcolor modifier, with the uncolored case done simply by leaving this out, for example: borderinsideframe(u,v,2g); and borderinsideframe(u,v,2g) withcolor red; It turns out this can be done with an unfill. I learned that a bare unfill erases, but add a withcolor modifier and the effect is a coloring. Thus the trick is: def bordercolorframe (expr w, h, off, clr) text modifier = unfill (-off,-off)--(w+off,-off)--(w+off,h+off)--(-off,h+off)--cycle modifier; fill (0,0)--(w,0)--(w,h)--(0,h)--cycle withcolor clr enddef; The omission of a semicolon after the last statement of the def allows one to add in a withcolor somecolor without triggering an error. Hope this will be of use to someone. Hans van der Meer On 21 okt. 2011, at 17:13, Peter Rolf wrote: Am 21.10.2011 15:05, schrieb Hans van der Meer: I cannot find the answer to the following question in Knuth's Metafont book. The following definition with a trailing text argument: def mydef (expr a, b, c) text modifier = if modifier = empty: Have you already tried if modifier = : else: fi enddef; How can I do the switch on an empty or nonempty modifier argument? It is not a string because calling its length fails with an error. I must do the switch, because fill modifier with an empty modifier gives horrible results. Usage would be calls like: mydef(1,2,3) withcolor green; % with modifier text mydef(1,2,3); % without modifier text Thanks in advance. Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Metapost error
Hi Hans, Hi all, with newest Context and luatex compiling following file: \starttext \startMPcode draw externalfigure hacker.jpg xscaled 30mm yscaled 20mm ; \stopMPcode \stoptext doesn't show the picture and gives an error message: ! Improper `addto'. to be read again withpen draw-...:also(EXPR0)else:doublepath(EXPR0)withpen .currentpen.fi._op_ to be read again ; to be read again ; * ...re hacker.jpg xscaled 30mm yscaled 20mm ; ; metapost error: unknown, no error, terminal or log messages metapost terminal: [1] Thanks for any help Lutz ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost error
On Wed, Oct 19, 2011 at 1:34 PM, Lutz Haseloff lutz.hasel...@googlemail.com wrote: Hi Hans, Hi all, with newest Context and luatex compiling following file: \starttext \startMPcode draw externalfigure hacker.jpg xscaled 30mm yscaled 20mm ; \stopMPcode \stoptext doesn't show the picture and gives an error message: ! Improper `addto'. to be read again withpen draw-...:also(EXPR0)else:doublepath(EXPR0)withpen .currentpen.fi._op_ to be read again ; to be read again ; * ...re hacker.jpg xscaled 30mm yscaled 20mm ; ; metapost error: unknown, no error, terminal or log messages metapost terminal: [1] Thanks for any help Lutz hm, strange, it seems that externalfigure is redefined This is ok \starttext \startMPcode def externalfigure primary filename = if false : rawtextext(\externalfigure[ filename ]) else : image ( addto currentpicture doublepath unitsquare withprescript fg_name= filename ; ) % unitsquare % withpen pencircle scaled 0 % withprescript fg_name= filename fi enddef ; draw externalfigure hacker.jpg xscaled 30mm yscaled 20mm ; \stopMPcode \stoptext -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Metapost error
Works again with last nights beta, thanks. 2011/10/19 Lutz Haseloff lutz.hasel...@googlemail.com: Hi Hans, Hi all, with newest Context and luatex compiling following file: \starttext \startMPcode draw externalfigure hacker.jpg xscaled 30mm yscaled 20mm ; \stopMPcode \stoptext doesn't show the picture and gives an error message: ! Improper `addto'. to be read again withpen draw-...:also(EXPR0)else:doublepath(EXPR0)withpen .currentpen.fi._op_ to be read again ; to be read again ; * ...re hacker.jpg xscaled 30mm yscaled 20mm ; ; metapost error: unknown, no error, terminal or log messages metapost terminal: [1] Thanks for any help Lutz ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
On 13-10-2011 02:30, Mojca Miklavec wrote: Of course the user would have to make a conscious decision by enabling this “beta” release. And of course the user makes a conscious decision to either compile from trunk if he wants the latest and greatest bugs and new features or to wait patiently until Taco thinks the software is ready and releases a beta. I don't think that one extra week (or two or three or ... for that matter) makes any difference. Also, it's not a matter of enabling but more making a drastic move... there is a complete infrastructure for switching the underlying handling of numbers and if there are bugs in the common layer it will influence traditional mp methods too. As mplib is a core component of luatex/mkiv it is unlikely that there will be a beta that has not been tested by taco and me on a bunch of documents that we normally use for testing drastic changes. Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
On Thu, Oct 13, 2011 at 02:30:07AM +0200, Mojca Miklavec wrote: MetaPost doesn't know erf and other obscure functions Metapost could possibly be extended to provide all of the functions in the standard math library. In fact, it would be nice if there be some hook to `link' to additional functions, written in C or in Fortran, for example. (I regularly use the complex error function.) Maybe this could be possible in luatex, made available to metapost through some communication pipe? Alan ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
On Thu, Oct 13, 2011 at 9:59 AM, Alan Braslau alan.bras...@cea.fr wrote: On Thu, Oct 13, 2011 at 02:30:07AM +0200, Mojca Miklavec wrote: MetaPost doesn't know erf and other obscure functions Metapost could possibly be extended to provide all of the functions in the standard math library. In fact, it would be nice if there be some hook to `link' to additional functions, written in C or in Fortran, for example. (I regularly use the complex error function.) Maybe this could be possible in luatex, made available to metapost through some communication pipe? yes, just build a binding for the library (or use something else like cinvoke) http://www.gust.org.pl/bachotex/2011-en/presentations/Scarso_2_2011 pag 15 or so If I recall correctly, I've built a binding for gsl too. -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Setting style and color attributes of label in metapost
Am 25.09.2011 um 02:43 schrieb Aditya Mahajan:
I am writing a module which uses metapost in the background for drawing. I
wanted to create an interface for setting the style and color of metapost
labels but using \doset...attributes is not working.
Here is an example:
\definenamespace
[test]
[style=yes,
name=test,
command=yes,
setup=yes]
\definetest
[blue]
[color=blue, text=Blue]
\definetest
[two]
[blue]
[style=\bold, text=Two]
\starttext
\edef\currenttest{two}
\startMPdrawing
label.lft(\sometxt{\dosettestattributes{style}{color}
\testparameter{text}}, (0,0)) ;
You can use the old \doattributes command which is expandable.
label.lft(\sometxt{\doattributes{\currenttesthash}{style}{color}{\testparameter{text}}},(0,0))
;
Wolfgang
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Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
On Wed, Oct 12, 2011 at 12:45 AM, Paul Menzel paulepan...@users.sourceforge.net wrote: Dear ConTeXt folks, I finally chose MetaPost/MetaFun [1] because of the native integration with ConTeXt and hopefully easy font handling. I want to use that throughout my document. Of course I hit the first problem. Wanting to draw a “simple” function f like f(x) = e^x, seems hard to accomplish. I guess I should stress that MetaPost does not have a high accuracy so it might not be the best solution [5]. There seem to be quite a lot of solutions (mostly macros) on the Web for this problem so I am wondering if one of them is integrated in MetaFun. Here are some of my findings. 1. Reading about the graph package by John D. Hobby [2] and which is also included in ConTeXt [3]. Especially I liked the automatic coordinate systems. The package seems to only be able to plot graphs with data points saved in files. So one solution would be to manually create data files with data points of the relevant function. 2. There is an example in the Drexel Physics Wiki [4]. 3. Anthony Phan has also created some macros in his `mps` [5 (currently not accessible)]. 4. André Heck uses the macro packages `courbes` and `grille` from Jean-Michel Sarlat to show some nice examples in his tutorial »Learning Metapost by Doing« [6]. So what do you suggest? In MKIV you can use Lua to make calculations in floating point, and Metapost to draw the data. -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
Dear Alan, Am Mittwoch, den 12.10.2011, 07:36 +0200 schrieb Alan Braslau: Metapost can now perform calculations in double precision floating point. At this time, it is in the svn version and does not work yet as such integrated in ConTeXt (through mplib). Taco promises this for soon... great to hear that. Just to clarify, with »now« you mean MetaPost v2, do not you? Taco, I hope you get there without a lot of problems showing up. If you need testers a good option would be to integrate that into ConTeXt Standalone as an option. The graph package is pretty clever, and I am working on proposals on how to extend/rewrite this taking advantage of the new metapost handling of large and small numbers. Perfect! To plot a function, you can create a path, as in path p ; p := for i=0 upto 1000: hide (x := i/1000 ;) if (i0) -- fi (x,exp(x)) endfor ; gplot p ; What module do I need for `gplot`? Looking at the MetaFun manual [8] I found out MetaFun even provides a macro `function` which probably does exactly what you do above with the for loop. draw function(2,x,x**(-0.5),1,10,1) xyscaled (2cm,2cm) withpen pencircle scaled 5mm withcolor transparent(1,.5,yellow) ; One proposal will be to make this even easier with new macros. Another perfect! One thing coming to my mind though that hopefully the wheel is not reimplemented. I guess Gnuplot can do a lot already, but on the other probably not as neat as Metapost when we want to color certain areas. Thanks, Paul [8] http://www.pragma-ade.com/general/manuals/metafun-s.pdf signature.asc Description: This is a digitally signed message part ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
On Thu, Oct 13, 2011 at 00:13, Paul Menzel wrote: Am Mittwoch, den 12.10.2011, 07:36 +0200 schrieb Alan Braslau: Metapost can now perform calculations in double precision floating point. At this time, it is in the svn version and does not work yet as such integrated in ConTeXt (through mplib). Taco promises this for soon... great to hear that. Just to clarify, with »now« you mean MetaPost v2, do not you? No, 1.750. The version 2 is not quite ready yet, but the version 1.750 already deals with floating point numbers. Taco, I hope you get there without a lot of problems showing up. If you need testers a good option would be to integrate that into ConTeXt Standalone as an option. It will become part of distribution as soon as it gets out, but Taco was busy enough organizing conference and dozens of other things. Just give him some time. I bet that he also wants to update documentation, do final bugfixing etc. instead of just releasing a random snapshot. One thing coming to my mind though that hopefully the wheel is not reimplemented. I guess Gnuplot can do a lot already, but on the other probably not as neat as Metapost when we want to color certain areas. Can you please specify your question more precisely? Gnuplot terminal uses metapost output. Gnuplot has some support for transparency, even though I'm not exactly sure if one can specify transparent colors for lines, only for fills. But you can always simply redefine line type colors to be transparent. Gnuplot brings all kinds of other problems like dependency on external tool. If you have enough time to create nice plots in metapost, it is better to avoid external dependency as a general rule. But if you have more questions about it, feel free to ask. I might be able to help you. The ConTeXt terminal was almost included until developers realized that they wanted me to throw away some code for handling units and replace that code with something buggy (like size 10cm,10 - (10cm,10cm); size 10,10cm - (0.35cm,10cm) or (25.40cm,10.00cm) depending on weather). Now I need to either rewrite part of my code or rewrite part of core code or convince them why keeping the old code. Mojca ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
Am Donnerstag, den 13.10.2011, 00:28 +0200 schrieb Mojca Miklavec: On Thu, Oct 13, 2011 at 00:13, Paul Menzel wrote: Am Mittwoch, den 12.10.2011, 07:36 +0200 schrieb Alan Braslau: Metapost can now perform calculations in double precision floating point. At this time, it is in the svn version and does not work yet as such integrated in ConTeXt (through mplib). Taco promises this for soon... great to hear that. Just to clarify, with »now« you mean MetaPost v2, do not you? No, 1.750. The version 2 is not quite ready yet, but the version 1.750 already deals with floating point numbers. Thank you for the clarification/correction. Taco, I hope you get there without a lot of problems showing up. If you need testers a good option would be to integrate that into ConTeXt Standalone as an option. It will become part of distribution as soon as it gets out, but Taco was busy enough organizing conference and dozens of other things. Just give him some time. I bet that he also wants to update documentation, do final bugfixing etc. instead of just releasing a random snapshot. Of course the user would have to make a conscious decision by enabling this “beta” release. If people could test this and with the right announcement I hope that some people would step up to test and contribute by submitting bug reports or writing documentation. One thing coming to my mind though that hopefully the wheel is not reimplemented. I guess Gnuplot can do a lot already, but on the other probably not as neat as Metapost when we want to color certain areas. Can you please specify your question more precisely? I meant coloring part of the area below a graph. For example if you look at the graphic for Riemann sums on page 51 of the document »Learning MetaPost by Doing« [6]. Gnuplot terminal uses metapost output. Gnuplot has some support for transparency, even though I'm not exactly sure if one can specify transparent colors for lines, only for fills. But you can always simply redefine line type colors to be transparent. Gnuplot brings all kinds of other problems like dependency on external tool. If you have enough time to create nice plots in metapost, it is better to avoid external dependency as a general rule. But if you have more questions about it, feel free to ask. I might be able to help you. Well my only question would be, why should someone use Gnuplot then? Is it only for people already knowing Gnuplot? Or also because it is a little less work to define the coordinate system and legends? Otherwise MetaPost seems to include all functionality Gnuplot offers and seems to offer more possibilities, does not it? The ConTeXt terminal was almost included until developers realized that they wanted me to throw away some code for handling units and replace that code with something buggy (like size 10cm,10 - (10cm,10cm); size 10,10cm - (0.35cm,10cm) or (25.40cm,10.00cm) depending on weather). Now I need to either rewrite part of my code or rewrite part of core code or convince them why keeping the old code. I remember a thread about that [9]. Thanks, Paul [6] http://staff.science.uva.nl/~heck/Courses/mptut.pdf [9] http://www.ntg.nl/pipermail/ntg-context/2010/054196.html signature.asc Description: This is a digitally signed message part ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
On Thu, Oct 13, 2011 at 01:19, Paul Menzel wrote: Am Donnerstag, den 13.10.2011, 00:28 +0200 schrieb Mojca Miklavec: On Thu, Oct 13, 2011 at 00:13, Paul Menzel wrote: Am Mittwoch, den 12.10.2011, 07:36 +0200 schrieb Alan Braslau: Metapost can now perform calculations in double precision floating point. At this time, it is in the svn version and does not work yet as such integrated in ConTeXt (through mplib). Taco promises this for soon... great to hear that. Just to clarify, with »now« you mean MetaPost v2, do not you? No, 1.750. The version 2 is not quite ready yet, but the version 1.750 already deals with floating point numbers. Thank you for the clarification/correction. Taco, I hope you get there without a lot of problems showing up. If you need testers a good option would be to integrate that into ConTeXt Standalone as an option. It will become part of distribution as soon as it gets out, but Taco was busy enough organizing conference and dozens of other things. Just give him some time. I bet that he also wants to update documentation, do final bugfixing etc. instead of just releasing a random snapshot. Of course the user would have to make a conscious decision by enabling this “beta” release. And of course the user makes a conscious decision to either compile from trunk if he wants the latest and greatest bugs and new features or to wait patiently until Taco thinks the software is ready and releases a beta. I don't think that one extra week (or two or three or ... for that matter) makes any difference. If people could test this and with the right announcement I hope that some people would step up to test and contribute by submitting bug reports or writing documentation. If people could test LaTeX 3 ... they would most certainly send bug reports and write docs. There will be more than enough time for testing before version 2 is out. Those who want to help writing documentation are already free to do so. The code already works. One thing coming to my mind though that hopefully the wheel is not reimplemented. I guess Gnuplot can do a lot already, but on the other probably not as neat as Metapost when we want to color certain areas. Can you please specify your question more precisely? I meant coloring part of the area below a graph. For example if you look at the graphic for Riemann sums on page 51 of the document »Learning MetaPost by Doing« [6]. I'm not sure how to draw discrete function, but you can try out the following: set style fill solid border -1 f(x)=(x-5)*sin(x)-cos(x)+2 plot [1:7] f(x) w filledcurve y1=0,\ '-' using 1:(f($1)) w boxes lt 0, f(x) lt -1 lw 3 1.5 2.5 3.5 4.5 5.5 6.5 e (But of course you need to draw everything else as well.) Gnuplot terminal uses metapost output. Gnuplot has some support for transparency, even though I'm not exactly sure if one can specify transparent colors for lines, only for fills. But you can always simply redefine line type colors to be transparent. Gnuplot brings all kinds of other problems like dependency on external tool. If you have enough time to create nice plots in metapost, it is better to avoid external dependency as a general rule. But if you have more questions about it, feel free to ask. I might be able to help you. Well my only question would be, why should someone use Gnuplot then? Is it only for people already knowing Gnuplot? Or also because it is a little less work to define the coordinate system and legends? It is much less work to define and draw coordinate system, choose the right units, draw logarithmic plots, parse input data, (past tense: do arithmetics with numbers above 4000), ... Otherwise MetaPost seems to include all functionality Gnuplot offers and seems to offer more possibilities, does not it? MetaPost doesn't know erf and other obscure functions, it wasn't able to calculate with big numbers and it is very inconvenient to parse input data. With gnuplot you get fast plotting, data parsing, range guessing, function calculations ... all for free, but you have slightly less flexibility in drawing. For me the most important part is that I have to use gnuplot for inspecting the data anyway (I would never use metapost to quickly inspect whether my measurement went fine or not) and then I just copy-paste the function call. The trade-off is still in favour of gnuplot, in particular since the quality is acceptable and I don't have any special needs and extra time to do fancy stuff with plots. What I really miss in Gnuplot is 3D support, but that one is not covered in MetaPost either. I remember a thread about that [9]. That was not the same. The last context-terminal-was-almost-included was something recent (less than a month ago). Mojca ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http
[NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
Dear ConTeXt folks, I finally chose MetaPost/MetaFun [1] because of the native integration with ConTeXt and hopefully easy font handling. I want to use that throughout my document. Of course I hit the first problem. Wanting to draw a “simple” function f like f(x) = e^x, seems hard to accomplish. I guess I should stress that MetaPost does not have a high accuracy so it might not be the best solution [5]. There seem to be quite a lot of solutions (mostly macros) on the Web for this problem so I am wondering if one of them is integrated in MetaFun. Here are some of my findings. 1. Reading about the graph package by John D. Hobby [2] and which is also included in ConTeXt [3]. Especially I liked the automatic coordinate systems. The package seems to only be able to plot graphs with data points saved in files. So one solution would be to manually create data files with data points of the relevant function. 2. There is an example in the Drexel Physics Wiki [4]. 3. Anthony Phan has also created some macros in his `mps` [5 (currently not accessible)]. 4. André Heck uses the macro packages `courbes` and `grille` from Jean-Michel Sarlat to show some nice examples in his tutorial »Learning Metapost by Doing« [6]. So what do you suggest? Thanks, Paul [1] http://www.ntg.nl/pipermail/ntg-context/2011/058527.html [2] http://tug.org/docs/metapost/mpgraph.pdf [3] http://wiki.contextgarden.net/Metapost [4] http://einstein.drexel.edu/liki/index.php/Metapost#Graphing_Functions [5] http://www-math.univ-poitiers.fr/~phan/downloads/metapost/statsman.pdf [6] http://staff.science.uva.nl/~heck/Courses/mptut.pdf signature.asc Description: This is a digitally signed message part ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
Dear ConTeXt folks, Am Mittwoch, den 12.10.2011, 00:45 +0200 schrieb Paul Menzel: Dear ConTeXt folks, I finally chose MetaPost/MetaFun [1] because of the native integration with ConTeXt and hopefully easy font handling. I want to use that throughout my document. Of course I hit the first problem. Wanting to draw a “simple” function f like f(x) = e^x, seems hard to accomplish. I guess I should stress that MetaPost does not have a high accuracy so it might not be the best solution [5]. There seem to be quite a lot of solutions (mostly macros) on the Web for this problem so I am wondering if one of them is integrated in MetaFun. Here are some of my findings. I just want to add that there seems to be work going on in ConTeXt to solve these issues as the talk at this years ConTeXt User Meeting of Alan Braslau suggests [7]. 1. Reading about the graph package by John D. Hobby [2] and which is also included in ConTeXt [3]. Especially I liked the automatic coordinate systems. The package seems to only be able to plot graphs with data points saved in files. So one solution would be to manually create data files with data points of the relevant function. 2. There is an example in the Drexel Physics Wiki [4]. 3. Anthony Phan has also created some macros in his `mps` [5 (currently not accessible)]. 4. André Heck uses the macro packages `courbes` and `grille` from Jean-Michel Sarlat to show some nice examples in his tutorial »Learning Metapost by Doing« [6]. So what do you suggest? Thanks, Paul [1] http://www.ntg.nl/pipermail/ntg-context/2011/058527.html [2] http://tug.org/docs/metapost/mpgraph.pdf [3] http://wiki.contextgarden.net/Metapost [4] http://einstein.drexel.edu/liki/index.php/Metapost#Graphing_Functions [5] http://www-math.univ-poitiers.fr/~phan/downloads/metapost/statsman.pdf [6] http://staff.science.uva.nl/~heck/Courses/mptut.pdf [7] http://meeting.contextgarden.net/2011/talks/day1_06_alan_plotting/BassangeBraslau.pdf signature.asc Description: This is a digitally signed message part ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
On Wed, Oct 12, 2011 at 00:45, Paul Menzel wrote: Dear ConTeXt folks, I finally chose MetaPost/MetaFun [1] because of the native integration with ConTeXt and hopefully easy font handling. I want to use that throughout my document. Of course I hit the first problem. Wanting to draw a “simple” function f like f(x) = e^x, seems hard to accomplish. I guess I should stress that MetaPost does not have a high accuracy so it might not be the best solution [5]. So what do you suggest? To wait for next metapost beta (or compile the version in trunk by yourself; however you might also need to change ConTeXt a bit, so that it will call metapost with the right parameters). http://meeting.contextgarden.net/2011/talks/day1_09_taco_metapost/mp2talk.pdf Mojca ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Plotting a graph of a function f, like f(x) = e^x, with MetaPost
Paul, Metapost can now perform calculations in double precision floating point. At this time, it is in the svn version and does not work yet as such integrated in ConTeXt (through mplib). Taco promises this for soon... The graph package is pretty clever, and I am working on proposals on how to extend/rewrite this taking advantage of the new metapost handling of large and small numbers. To plot a function, you can create a path, as in path p ; p := for i=0 upto 1000: hide (x := i/1000 ;) if (i0) -- fi (x,exp(x)) endfor ; gplot p ; One proposal will be to make this even easier with new macros. Alan On Wed, Oct 12, 2011 at 12:45:12AM +0200, Paul Menzel wrote: Dear ConTeXt folks, I finally chose MetaPost/MetaFun [1] because of the native integration with ConTeXt and hopefully easy font handling. I want to use that throughout my document. Of course I hit the first problem. Wanting to draw a “simple” function f like f(x) = e^x, seems hard to accomplish. I guess I should stress that MetaPost does not have a high accuracy so it might not be the best solution [5]. There seem to be quite a lot of solutions (mostly macros) on the Web for this problem so I am wondering if one of them is integrated in MetaFun. Here are some of my findings. 1. Reading about the graph package by John D. Hobby [2] and which is also included in ConTeXt [3]. Especially I liked the automatic coordinate systems. The package seems to only be able to plot graphs with data points saved in files. So one solution would be to manually create data files with data points of the relevant function. 2. There is an example in the Drexel Physics Wiki [4]. 3. Anthony Phan has also created some macros in his `mps` [5 (currently not accessible)]. 4. André Heck uses the macro packages `courbes` and `grille` from Jean-Michel Sarlat to show some nice examples in his tutorial »Learning Metapost by Doing« [6]. So what do you suggest? Thanks, Paul [1] http://www.ntg.nl/pipermail/ntg-context/2011/058527.html [2] http://tug.org/docs/metapost/mpgraph.pdf [3] http://wiki.contextgarden.net/Metapost [4] http://einstein.drexel.edu/liki/index.php/Metapost#Graphing_Functions [5] http://www-math.univ-poitiers.fr/~phan/downloads/metapost/statsman.pdf [6] http://staff.science.uva.nl/~heck/Courses/mptut.pdf ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ -- Alan Braslau CEA DSM-IRAMIS-SPEC CNRS URA 2464 Orme des Merisiers 91191 Gif-sur-Yvette cedex FRANCE tel: +33 1 69 08 73 15 fax: +33 1 69 08 87 86 mailto:alan.bras...@cea.fr ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] metapost not adding picture
I have this question on the implementation of metapost. The following program ends in an error: \startMPpage picture v; draw origin--(1cm,1cm); v = currentpicture; clearit; draw (1cm,0)--(0,1cm); currentpicture := currentpicture + v; \stopMPpage The error is: ! Not implemented: (picture)+(picture). Yet Knuth's metafont book in Chapter 13 tells me, quote: Pictures can be added or subtracted; Is the current metafont implementation lacking this feature? Will it be implemented in the near future? Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost not adding picture
Am 09.10.2011 22:01, schrieb Meer, H. van der: I have this question on the implementation of metapost. The following program ends in an error: \startMPpage picture v; draw origin--(1cm,1cm); v = currentpicture; clearit; draw (1cm,0)--(0,1cm); currentpicture := currentpicture + v; use addto currentpicture also v; \stopMPpage The error is: ! Not implemented: (picture)+(picture). Yet Knuth's metafont book in Chapter 13 tells me, quote: Pictures can be added or subtracted; Is the current metafont implementation lacking this feature? Will it be implemented in the near future? Just another notation, that's all. Best wishes, Peter ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] nocolor in MetaPost
Is there a value that can be given to a color variable in MetaPost that might function as some sort of no color. Thus something like NULL in the programming language C. Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] nocolor in MetaPost
On 5-10-2011 19:56, Hans van der Meer wrote: Is there a value that can be given to a color variable in MetaPost that might function as some sort of no color. Thus something like NULL in the programming language C. not that I know of - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] nocolor in MetaPost
On Wed, Oct 05, 2011 at 08:46:22PM +0200, Hans Hagen wrote: On 5-10-2011 19:56, Hans van der Meer wrote: Is there a value that can be given to a color variable in MetaPost that might function as some sort of no color. Thus something like NULL in the programming language C. not that I know of What exactly do you want to do? Can if known mycolor : fi be of any help? ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost to pdf on the fly
I am afraid I don't completely understand this. Doing: \startbuffer[fig-1] \startMPcode draw origin-(20,0) .. origin+(0,20) .. origin+(20,0) .. origin+(0,-20) .. cycle withcolor darkgreen; label(textext(Test),origin); \stopMPcode \stopbuffer \starttext \processMPbuffer[fig-1] \stoptext I get the error: ! Argument of \dostartMPpositiongraphic has an extra }. system tex error on line 8 in file onfly.tex: Argument of ... 1 \startbuffer[fig-1] 2 \startMPcode 3 draw origin-(20,0) .. origin+(0,20) .. origin+(20,0) .. origin+(0,-20) .. cycle withcolor darkgreen; 4 label(textext(Test),origin); 5 \stopMPcode 6 \stopbuffer 7 \starttext 8 \processMPbuffer[fig-1] .. inserted text \par to be read again } \processMPgraphic ...le ;\!!es , \MPaskedfigure )} }\egroup \placeMPgraphic \... \doprocessMPbuffer ...(\currentMPgraphicname )}} \endMPgraphicgroup l.8 \processMPbuffer[fig-1] Hans van der Meer On 29 sep. 2011, at 21:21, Aditya Mahajan wrote: On Thu, 29 Sep 2011, Meer, H. van der wrote: I would like to generate metapost figures in separate pdf-files (in some convenient directory, they are reused elsewhere). This as part of a project structure. I know that on a separate run such a pdf can be generated with: context figurefile running on input \input some-metapost-inclusions \starttext \startMPpage .. \stopMPpage \stoptext But the idea is to do it on the fly while typesetting a project (using mode=*first to prevent further iterations): .. \component figurefile .. And in the figurefile \startcomponent figurefile \environment some-metapost-inclusions \starttext .. BUT THEN WHAT? As such it is not sufficient for the goal proposed. Can this be done at all? What I usually do is have all the figures in separate buffers: \startenvironment figures \startbuffer[fig-1] ... \stopbuffer \stopenvironment and in the main file \environment figures \starttext \processMPbuffer[fig-1] \stoptext This way you can also combine multiple figures using \processMPbuffer[fig-common,fig-1] etc. The metapost processing is fast enough that there is no noticable speed difference. Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost to pdf on the fly
Am 03.10.2011 um 09:05 schrieb Meer, H. van der:
I am afraid I don't completely understand this. Doing:
\startbuffer[fig-1]
\startMPcode
draw origin-(20,0) .. origin+(0,20) .. origin+(20,0) .. origin+(0,-20) ..
cycle withcolor darkgreen;
label(textext(Test),origin);
\stopMPcode
\stopbuffer
\starttext
\processMPbuffer[fig-1]
\stoptext
This works:
\startbuffer[fig-1]
draw (-20,0) .. (0,20) .. (20,0) .. (0,-20) .. cycle withcolor
\MPcolor{darkgreen};
label(textext(Test),origin);
\stopbuffer
\starttext
\processMPbuffer[fig-1]
\stoptext
Wolfgang
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Re: [NTG-context] metapost to pdf on the fly
Thanks, this works indeed. But I hoped to be able to produce in this manner at
one stroke a series of separate figures, each in its own pdf file. Or is this
an impossible action?
Hans van der Meer
On 3 okt. 2011, at 09:09, Wolfgang Schuster wrote:
Am 03.10.2011 um 09:05 schrieb Meer, H. van der:
I am afraid I don't completely understand this. Doing:
\startbuffer[fig-1]
\startMPcode
draw origin-(20,0) .. origin+(0,20) .. origin+(20,0) .. origin+(0,-20) ..
cycle withcolor darkgreen;
label(textext(Test),origin);
\stopMPcode
\stopbuffer
\starttext
\processMPbuffer[fig-1]
\stoptext
This works:
\startbuffer[fig-1]
draw (-20,0) .. (0,20) .. (20,0) .. (0,-20) .. cycle withcolor
\MPcolor{darkgreen};
label(textext(Test),origin);
\stopbuffer
\starttext
\processMPbuffer[fig-1]
\stoptext
Wolfgang
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Re: [NTG-context] metapost to pdf on the fly
On Mon, Oct 3, 2011 at 10:12, Meer, H. van der wrote: Thanks, this works indeed. But I hoped to be able to produce in this manner at one stroke a series of separate figures, each in its own pdf file. Or is this an impossible action? Then create file.mp with beginfig(1); ... metapost code ... endfig; beginfig(2); ... metapost code ... endfig; beginfig(3); ... metapost code ... endfig; end. and process it with mptopdf file.mp Mojca ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] metapost to pdf on the fly
I would like to generate metapost figures in separate pdf-files (in some convenient directory, they are reused elsewhere). This as part of a project structure. I know that on a separate run such a pdf can be generated with: context figurefile running on input \input some-metapost-inclusions \starttext \startMPpage .. \stopMPpage \stoptext But the idea is to do it on the fly while typesetting a project (using mode=*first to prevent further iterations): .. \component figurefile .. And in the figurefile \startcomponent figurefile \environment some-metapost-inclusions \starttext .. BUT THEN WHAT? As such it is not sufficient for the goal proposed. Can this be done at all? Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost to pdf on the fly
On Thu, 29 Sep 2011, Meer, H. van der wrote: I would like to generate metapost figures in separate pdf-files (in some convenient directory, they are reused elsewhere). This as part of a project structure. I know that on a separate run such a pdf can be generated with: context figurefile running on input \input some-metapost-inclusions \starttext \startMPpage .. \stopMPpage \stoptext But the idea is to do it on the fly while typesetting a project (using mode=*first to prevent further iterations): .. \component figurefile .. And in the figurefile \startcomponent figurefile \environment some-metapost-inclusions \starttext .. BUT THEN WHAT? As such it is not sufficient for the goal proposed. Can this be done at all? What I usually do is have all the figures in separate buffers: \startenvironment figures \startbuffer[fig-1] ... \stopbuffer \stopenvironment and in the main file \environment figures \starttext \processMPbuffer[fig-1] \stoptext This way you can also combine multiple figures using \processMPbuffer[fig-common,fig-1] etc. The metapost processing is fast enough that there is no noticable speed difference. Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Setting style and color attributes of label in metapost
I am writing a module which uses metapost in the background for drawing. I
wanted to create an interface for setting the style and color of metapost
labels but using \doset...attributes is not working.
Here is an example:
\definenamespace
[test]
[style=yes,
name=test,
command=yes,
setup=yes]
\definetest
[blue]
[color=blue, text=Blue]
\definetest
[two]
[blue]
[style=\bold, text=Two]
\starttext
\edef\currenttest{two}
\startMPdrawing
label.lft(\sometxt{\dosettestattributes{style}{color}
\testparameter{text}}, (0,0)) ;
\stopMPdrawing
\edef\currenttest{blue}
\startMPdrawing
label.lft(\sometxt{\dosettestattributes{color}{style}
\testparameter{text}}, (2cm,0)) ;
\stopMPdrawing
\MPdrawingdonetrue\getMPdrawing
\stoptext
Notice that the first label has the same style as the last label. This is
happening because \doset..attributes is defined as an unexpandable macro.
I can get around this by setting the value of \currenttest inside the
\sometxt{...} argument. Something like:
\def\dosometxt#1#2%
{\normaldosometxt{#1}%
{\def\noexpand\letterbackslash currenttest{\currenttest #2}}}
Surely, there should be a more direct way of achieving this?
Aditya
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[NTG-context] MetaPost visibly drawing at 0pt
I used to put an invisible frame around figures in MetaPost by setting a pen scaled at 0pt. That left no trace, but defined the area. However I (now) see a thin line drawn by code: pickup pencircle scaled 0pt; draw origin--(w,h); Did I always mis this or has something changed? For example a roundoff away from zero in MetaPost? By the way I am typesetting through ConTeXT with \startMPpage … \stopMPpage. Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] MetaPost visibly drawing at 0pt
Am 19.09.2011 14:31, schrieb Meer, H. van der: I used to put an invisible frame around figures in MetaPost by setting a pen scaled at 0pt. That left no trace, but defined the area. However I (now) see a thin line drawn by code: pickup pencircle scaled 0pt; draw origin--(w,h); Did I always mis this or has something changed? For example a roundoff away from zero in MetaPost? By the way I am typesetting through ConTeXT with \startMPpage … \stopMPpage. Donno (as I never used this method). Better use 'setbounds currentpicture to' .. .. 'unitsquare xyscaled(w,h);' .. 'OverlayBox;' .. whatever is squared; at the end of your graphic. This simply sets the bounding box of you graphic and has no unwanted side effects. Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question (bug?)
Am 21.07.2011 23:21, schrieb Alan Braslau: On Thu, Jul 21, 2011 at 05:39:48PM +0200, Peter Rolf wrote: use p2 := p0 p1; the reason for the 'unexpected' output is, that point 1 and 2 of the path p2 are equal. keep in mind that drawing with an asymmetrical pen has its own (complex) rules. Thank you -- I forgot about the path operator same here (i had to browse the metapost manual for the operator) :-) (Funny thing, though, that the problem shows up with point 0. I would also think that having two consecutive identical points, although poor style, should not cause problems as it does.) i guess it has to do with the fact, that 'drawing' with non circular pens always results in a *filled* path. metapost is calculating new points for the shape, instead of just storing the given path points and the pen size (like in a normal pencircle draw). and if a filled path is intersecting with itself, funny things can happen. well, most times not that funny (because unwanted). probably not the best example (not drawn, no special pen), but it gives a first impression of what is going on. \startTEXpage \startMPcode path p[]; p0 := unitcircle scaled 10cm; p1 := p0 scaled .5; p2 := p0 -- reverse(p1) -- cycle; fill p2; \stopMPcode \stopTEXpage depending on their direction (clockwise or counter clockwise) and location (intersection or not) such path 'cycles' are cleared or filled. with this trick you are able to produce punches as in the glyphs of O or e. if you like and have the time you can debug your example (simply add a loop that draws all points and labels them). you will then see the difference between a drawn (pencircle) and a 'drawn' (non circular pen) path. ;-) And yes, the use of an asymmetrical pen is indeed the whole point of this figure -- I am using metapost to achieve very easily an effect, conceptually very simple, that a colleague has not been able to produce using Adobe Illustrator. Thank you again for helping out. my pleasure. Peter Alan ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] metapost question (bug?)
Hello, I have a question for metapost specialists: I am looking for some sort of effect, built upon a zig-zag line. The first graphic in the minimal example below is as I would expect. The second graphic seems to be drawn without the point at (0,0). (Ignore the asymmetry at the end of the path in the 2nd, this is to be expected in this minimal example.) Is the result correct or is this a bug? Alan \starttext \startTEXpage \startMPcode u := 1mm ; path p[] ; p0 := ((0,0)--(1,0)) rotated 45 scaled 20u ; pickup pensquare scaled 10u rotated 45 ; draw p0 withcolor blue ; pickup pensquare yscaled 2u xscaled 5u rotated 45 ; draw p0 withcolor yellow ; pickup pencircle scaled .1u ; draw p0 ; \stopMPcode \stopTEXpage \startTEXpage \startMPcode p1 := ((0,0)--(sqrt(2),0)) rotated -30 scaled 20u shifted point infinity of p0 ; p2 := p0--p1 ; pickup pensquare scaled 10u rotated 45 ; draw p2 withcolor blue ; pickup pensquare yscaled 2u xscaled 5u rotated 45 ; draw p2 withcolor yellow ; pickup pencircle scaled .1u ; draw p2 ; \stopMPcode \stopTEXpage \stoptext ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question (bug?)
On Thu, Jul 21, 2011 at 4:39 PM, Alan Braslau alan.bras...@cea.fr wrote: Hello, I have a question for metapost specialists: I am looking for some sort of effect, built upon a zig-zag line. The first graphic in the minimal example below is as I would expect. The second graphic seems to be drawn without the point at (0,0). (Ignore the asymmetry at the end of the path in the 2nd, this is to be expected in this minimal example.) Is the result correct or is this a bug? Alan \starttext \startTEXpage \startMPcode u := 1mm ; path p[] ; p0 := ((0,0)--(1,0)) rotated 45 scaled 20u ; pickup pensquare scaled 10u rotated 45 ; draw p0 withcolor blue ; pickup pensquare yscaled 2u xscaled 5u rotated 45 ; draw p0 withcolor yellow ; pickup pencircle scaled .1u ; draw p0 ; \stopMPcode \stopTEXpage \startTEXpage \startMPcode p1 := ((0,0)--(sqrt(2),0)) rotated -30 scaled 20u shifted point infinity of p0 ; p2 := p0--p1 ; pickup pensquare scaled 10u rotated 45 ; draw p2 withcolor blue ; pickup pensquare yscaled 2u xscaled 5u rotated 45 ; draw p2 withcolor yellow ; pickup pencircle scaled .1u ; draw p2 ; \stopMPcode \stopTEXpage \stoptext You are shifting by a certain amount : what is the net effect of shifted point infinity of p0 ? -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question (bug?)
Am 21.07.2011 16:53, schrieb luigi scarso: On Thu, Jul 21, 2011 at 4:39 PM, Alan Braslau alan.bras...@cea.fr wrote: Hello, I have a question for metapost specialists: I am looking for some sort of effect, built upon a zig-zag line. The first graphic in the minimal example below is as I would expect. The second graphic seems to be drawn without the point at (0,0). (Ignore the asymmetry at the end of the path in the 2nd, this is to be expected in this minimal example.) Is the result correct or is this a bug? Alan \starttext \startTEXpage \startMPcode u := 1mm ; path p[] ; p0 := ((0,0)--(1,0)) rotated 45 scaled 20u ; pickup pensquare scaled 10u rotated 45 ; draw p0 withcolor blue ; pickup pensquare yscaled 2u xscaled 5u rotated 45 ; draw p0 withcolor yellow ; pickup pencircle scaled .1u ; draw p0 ; \stopMPcode \stopTEXpage \startTEXpage \startMPcode p1 := ((0,0)--(sqrt(2),0)) rotated -30 scaled 20u shifted point infinity of p0 ; p2 := p0--p1 ; use p2 := p0 p1; the reason for the 'unexpected' output is, that point 1 and 2 of the path p2 are equal. keep in mind that drawing with an asymmetrical pen has its own (complex) rules. pickup pensquare scaled 10u rotated 45 ; draw p2 withcolor blue ; pickup pensquare yscaled 2u xscaled 5u rotated 45 ; draw p2 withcolor yellow ; pickup pencircle scaled .1u ; draw p2 ; \stopMPcode \stopTEXpage \stoptext You are shifting by a certain amount : what is the net effect of shifted point infinity of p0 ? afaik simply the last point of p0. ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metapost question (bug?)
On Thu, Jul 21, 2011 at 05:39:48PM +0200, Peter Rolf wrote: use p2 := p0 p1; the reason for the 'unexpected' output is, that point 1 and 2 of the path p2 are equal. keep in mind that drawing with an asymmetrical pen has its own (complex) rules. Thank you -- I forgot about the path operator (Funny thing, though, that the problem shows up with point 0. I would also think that having two consecutive identical points, although poor style, should not cause problems as it does.) And yes, the use of an asymmetrical pen is indeed the whole point of this figure -- I am using metapost to achieve very easily an effect, conceptually very simple, that a colleague has not been able to produce using Adobe Illustrator. Thank you again for helping out. Alan ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
I'm not able to reproduce the problem, but there is one weird thing (unrelated to your problem): The original file test.mp is copied to test.mp.keep and a new file test.mp is created with a newer timestamp and two additional blank lines at the end. So repeating the compilation hundred times leads me to a file with 200 blank lines at the end and I cannot recover the original file back (in each run the .keep file is overwritten). Hans - would it be possible to fix that please? Mojca ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
On 15-7-2011 9:13, Mojca Miklavec wrote: I'm not able to reproduce the problem, but there is one weird thing (unrelated to your problem): The original file test.mp is copied to test.mp.keep and a new file test.mp is created with a newer timestamp and two additional blank lines at the end. So repeating the compilation hundred times leads me to a file with 200 blank lines at the end and I cannot recover the original file back (in each run the .keep file is overwritten). Hans - would it be possible to fix that please? hm, I though that it was fixed, was a catch for older mp's Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
On 15-7-2011 3:04, luigi scarso wrote: Building the file using texexec --mptex test.mp all three graphics how about context --mp test.mp ? Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
On Fri, Jul 15, 2011 at 09:44, Hans Hagen pra...@wxs.nl wrote: On 15-7-2011 3:04, luigi scarso wrote: Building the file using texexec --mptex test.mp all three graphics how about context --mp test.mp ? context --mp test metapost| loading 'metafun.mp' (experimental metapost version two)Error in mp.find_file: ...text/tex/texmf-context/tex/context/base/mlib-run.lua:75: attempt to call field 'checktexts' (a nil value) metapost| processing 'test.mp'Error in mp.find_file: ...text/tex/texmf-context/tex/context/base/mlib-run.lua:75: attempt to call field 'checktexts' (a nil value) Error in mp.find_file: ...text/tex/texmf-context/tex/context/base/mlib-run.lua:75: attempt to call field 'checktexts' (a nil value) metapost| error: Warning: cannot open font map file pdftex.map Warning: cannot open font map file lm-math.map (Please type a command or say `end') [1] (Please type a command or say `end') [2] (Please type a command or say `end') ! You can only use `btex' or `verbatimtex' in a file. * label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u); ! Missing `,' has been inserted. to be read again sqrt * label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u); ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
On Fri, Jul 15, 2011 at 9:47 AM, Mojca Miklavec mojca.miklavec.li...@gmail.com wrote: On Fri, Jul 15, 2011 at 09:44, Hans Hagen pra...@wxs.nl wrote: On 15-7-2011 3:04, luigi scarso wrote: Building the file using texexec --mptex test.mp all three graphics how about context --mp test.mp ? context --mp test metapost | loading 'metafun.mp' (experimental metapost version two)Error in mp.find_file: ...text/tex/texmf-context/tex/context/base/mlib-run.lua:75: attempt to call field 'checktexts' (a nil value) metapost | processing 'test.mp'Error in mp.find_file: ...text/tex/texmf-context/tex/context/base/mlib-run.lua:75: attempt to call field 'checktexts' (a nil value) Error in mp.find_file: ...text/tex/texmf-context/tex/context/base/mlib-run.lua:75: attempt to call field 'checktexts' (a nil value) metapost | error: Warning: cannot open font map file pdftex.map Warning: cannot open font map file lm-math.map (Please type a command or say `end') [1] (Please type a command or say `end') [2] (Please type a command or say `end') ! You can only use `btex' or `verbatimtex' in a file. * label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u); ! Missing `,' has been inserted. to be read again sqrt * label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u); Even with mkiv metapost depends to pdftex ora some files from pdftex. That's way \startMPpage..\stopMPpage is better. -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
On 15-7-2011 9:47, Mojca Miklavec wrote: On Fri, Jul 15, 2011 at 09:44, Hans Hagenpra...@wxs.nl wrote: On 15-7-2011 3:04, luigi scarso wrote: Building the file using texexec --mptex test.mp all three graphics how about context --mp test.mp ? context --mp test metapost| loading 'metafun.mp' (experimental metapost version two)Error in mp.find_file: text/tex/texmf-context/tex/context/base/mlib-run.lua:75: attempt to call field 'checktexts' (a nil value) hm, i'll look into it later Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
On Thu, Jul 14, 2011 at 7:04 PM, luigi scarso luigi.sca...@gmail.com wrote:
This is one of the preferrred way to deal with metapost in mkiv
\starttext
\startMPpage
numeric u;
u = 1cm;
draw (0,2u)--(0,0)--(4u,0);
pickup pencircle scaled 1pt;
draw (0,0){up}
for i=1 upto 8: ..(i/2,sqrt(i/2))*u endfor;
label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u);
label.bot(btex $x$ etex, (2u,0));
label.lft(btex $y$ etex, (0,u));
\stopMPpage
\stoptext
It's ok with latest minimals
Thanks, Luigi. This works on my system, too.
Kevin
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Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
On Fri, Jul 15, 2011 at 1:13 AM, Mojca Miklavec mojca.miklavec.li...@gmail.com wrote: The original file test.mp is copied to test.mp.keep and a new file test.mp is created with a newer timestamp and two additional blank lines at the end. I hadn't noticed this yesterday, but I see the same behavior, but only when building with texexec --mptex test.mp. Kevin ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
Using a fresh install of ConTeXt Minimals today (ConTeXt version
2011.07.14 16:09, luatex version beta-0.70.1-2011051918) I am trying
to build the following MetaPost graphics:
---8--- file: test.mp
fontmapfile =lm-math.map ;
beginfig(1)
draw fullcircle scaled 3cm ;
endfig ;
beginfig(2) ;
fill fullcircle scaled 5cm withcolor red ;
endfig ;
beginfig(3);
numeric u;
u = 1cm;
draw (0,2u)--(0,0)--(4u,0);
pickup pencircle scaled 1pt;
draw (0,0){up}
for i=1 upto 8: ..(i/2,sqrt(i/2))*u endfor;
label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u);
label.bot(btex $x$ etex, (2u,0));
label.lft(btex $y$ etex, (0,u));
endfig;
end .
---8---
Building the file using mpost test.mp I get the following:
This is MetaPost, version 1.504 (kpathsea version 6.0.0)
(mpost.mp (/opt/tools/ConTeXt/beta/tex/texmf/metapost/base/plain.mp
Preloading the plain mem file, version 1.004))
(./test.mp{pdftex.map}{lm-math.map} [1]
[2]/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:570:in
`locateseries': undefined method `each' for tex:String
(NoMethodError)
from
/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:397:in
`block in expand'
from
/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:392:in
`each'
from
/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:392:in
`expand'
from
/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/texexec.rb:789:in
`main'
test.mp
test.mpx
! Unable to make mpx file.
l.18 label.lrt(btex
$\sqrt x$ etex, (3,sqrt 3)*u);
2 output files written: test.1 .. test.2
The first two graphics are produced correctly, but there is no output
for the third graphic with the labels.
Building the file using texexec --mptex test.mp all three graphics
are produced, but the label $\sqrt x$ does not produce the square root
symbol.
Am I doing something obviously wrong? Can anyone reproduce this?
Thanks,
Kevin
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Re: [NTG-context] Trouble making basic MetaPost graphics using ConTeXt Minimals
On Fri, Jul 15, 2011 at 2:59 AM, Kevin D. Robbins
krobb...@alumni.princeton.edu wrote:
Using a fresh install of ConTeXt Minimals today (ConTeXt version
2011.07.14 16:09, luatex version beta-0.70.1-2011051918) I am trying
to build the following MetaPost graphics:
---8--- file: test.mp
fontmapfile =lm-math.map ;
beginfig(1)
draw fullcircle scaled 3cm ;
endfig ;
beginfig(2) ;
fill fullcircle scaled 5cm withcolor red ;
endfig ;
beginfig(3);
numeric u;
u = 1cm;
draw (0,2u)--(0,0)--(4u,0);
pickup pencircle scaled 1pt;
draw (0,0){up}
for i=1 upto 8: ..(i/2,sqrt(i/2))*u endfor;
label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u);
label.bot(btex $x$ etex, (2u,0));
label.lft(btex $y$ etex, (0,u));
endfig;
end .
---8---
Building the file using mpost test.mp I get the following:
This is MetaPost, version 1.504 (kpathsea version 6.0.0)
(mpost.mp (/opt/tools/ConTeXt/beta/tex/texmf/metapost/base/plain.mp
Preloading the plain mem file, version 1.004))
(./test.mp{pdftex.map}{lm-math.map} [1]
[2]/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:570:in
`locateseries': undefined method `each' for tex:String
(NoMethodError)
from
/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:397:in
`block in expand'
from
/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:392:in
`each'
from
/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:392:in
`expand'
from
/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/texexec.rb:789:in
`main'
test.mp
test.mpx
! Unable to make mpx file.
l.18 label.lrt(btex
$\sqrt x$ etex, (3,sqrt 3)*u);
2 output files written: test.1 .. test.2
The first two graphics are produced correctly, but there is no output
for the third graphic with the labels.
Building the file using texexec --mptex test.mp all three graphics
are produced, but the label $\sqrt x$ does not produce the square root
symbol.
Am I doing something obviously wrong? Can anyone reproduce this?
Thanks,
Kevin
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This is one of the preferrred way to deal with metapost in mkiv
\starttext
\startMPpage
numeric u;
u = 1cm;
draw (0,2u)--(0,0)--(4u,0);
pickup pencircle scaled 1pt;
draw (0,0){up}
for i=1 upto 8: ..(i/2,sqrt(i/2))*u endfor;
label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u);
label.bot(btex $x$ etex, (2u,0));
label.lft(btex $y$ etex, (0,u));
\stopMPpage
\stoptext
It's ok with latest minimals
--
luigi
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[NTG-context] cmyk in metapost
I must be doing something wrong. But what? Relevant part of Metapost code: numeric Cb, Cr, Y, T, temp, graycolors; Cb := 0; Cr := 1; Y = 2; T := 3; graycolors := 15; numeric colors[][];for i = 0 upto graycolors: temp := (graycolors - i) / graycolors; colors[i][Cb] := temp; colors[i][Cr] := temp; colors[i][Y] := temp; colors[i][T] := 0; endfor def colorvalue(expr v) = cmyk(colors[v][Cb], colors[v][Cr], colors[v][Y], colors[v][T]) enddef; for i = 0 upto 15: mycmyk[i] := colorvalue(i); endfor Used with drawdot... withcolor mycymk[index]; The error from metapost is in the generation of the cmyk colors: ! terminal: (redpart mycmyk0,greenpart mycmyk0,bluepart mycmyk0) (1,1,1,0) ! Equation cannot be performed (color=cmykcolor). to be read again ; for(0) mycmyk[(EXPR0)]:=colorvalue((EXPR0)); ENDFOR startsubtitle-...:mycmyk[i]:=colorvalue(i);endfor Strangely the following does work without problems: drawdot... withcolor colorvalue(index); I got the code from the Metafun manual. Beta from ConTeXt ver: 2011.03.28 01:03 MKIV download. Something obvious I am overlooking? Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] cmyk in metapost
On 26-6-2011 1:51, Hans van der Meer wrote: I must be doing something wrong. But what? Relevant part of Metapost code: I got the code from the Metafun manual. Beta from ConTeXt ver: 2011.03.28 01:03 MKIV download. Something obvious I am overlooking? cmykcolor is another datatype in mp than color - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] mtxrun --script metapost and fonts?
Hallo. I've got a problem with metapost - pdf translation. Since mptopdf is still broken in the last ConTeXt beta in the minimal distribution, I use mtxrun --script metapost --split. It works well, only it ignores font setting. My code is like this: verbatimtex \definetypeface [times] [rm] [serif] [times] [default] [encoding=ec] \definetypeface [times] [mm] [math] [times] [default] [encoding=ec] \setupbodyfont [times,10pt] etex; beginfig(1); label(btex A $a_i$ etex,origin); endfig; end. I believe that the code in the verbatimtex ... etex environment should switch the major font to Times (it works with texexec --mptex). However, it is ignored by the mtxrun --script metapost --split script---Computer Modern in 12pt is used instead of Times in 10pt. Is there any way around this problem? Many thanks for your help. Best wishes, Michal Kvasnicka ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] mtxrun --script metapost and fonts?
On 10-5-2011 3:29, Michal Kvasnička wrote: Hallo. I've got a problem with metapost - pdf translation. Since mptopdf is still broken in the last ConTeXt beta in the minimal distribution, I use mtxrun --script metapost --split. It works well, only it ignores font setting. My code is like this: verbatimtex \definetypeface [times] [rm] [serif] [times] [default] [encoding=ec] \definetypeface [times] [mm] [math] [times] [default] [encoding=ec] \setupbodyfont [times,10pt] etex; beginfig(1); label(btex A $a_i$ etex,origin); endfig; end. just do: \definetypeface [times] [rm] [serif] [times] [default] [encoding=ec] \definetypeface [times] [mm] [math] [times] [default] [encoding=ec] \setupbodyfont [times,10pt] \startMPpage label(btex A $a_i$ etex,origin); \stopMPpage I believe that the code in the verbatimtex ... etex environment should switch the major font to Times (it works with texexec --mptex). However, it is ignored by the mtxrun --script metapost --split script---Computer Modern in 12pt is used instead of Times in 10pt. Is there any way around this problem? Many thanks for your help. in mkiv verbatimtex is not supported (useless) Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Context and metapost: using \frac
Hi
I am using context to run a metapost graph. I am however unable to
insert a label with \frac, since this is not pure Tex but Latex. This
seems to be a known problem for metapost:
-Seems for metapost only, one should add %latex
(http://ryanmlayer.wordpress.com/tag/metapost/).
-I saw also one post where it was mentione done should add
//\setupMPpage[offset=1pt]
//(http://www.tug.org/pipermail/pdftex/2001-March/000429.html). I tried,
but did not work however...
Any idea how I should do? Find below minimal example, that does not work
on my computer when compiling with context...
Thanks!!
Matthieu
\starttext
\setupMPpage[offset=1pt]
\switchtobodyfont[10pt]
% Beginning MetaPost graphic
\startMPpage
label.top(btex 1.4 etex scaled 1.00, (10, 10));
label.top(btex $\sigma_t$ etex scaled 1.00, (0, 10));
label.top(btex $\displaystyle \frac{\sigma_t}{a}$ etex scaled 1.00,
(1, 1));
\stopMPpage
\stoptext
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Re: [NTG-context] Context and metapost: using \frac
On 25-4-2011 8:33, mat wrote:
Any idea how I should do? Find below minimal example, that does not work
on my computer when compiling with context...
best use textext ...
label.top(textext(1.4)scaled 1.00,
(10, 10));
label.top(textext($\sigma_t$) scaled 1.00, (0,
10));
label.top(textext($\displaystyle \frac{\sigma_t}{a}$) scaled 1.00, (1,
1));
works ok (only tested mkiv); also \frac is available in context
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] Context and metapost: using \frac
Dear Hans
Thanks for your quick answer! I was however not able to produce the
graph with the textext code... Should I actually then use another
compiler? I tried with context and texexec (I thought texexec is the
compiler for mkiv, right? I'm on linux ubuntu).
I saw also that, as you mention, context has a \frac:
http://wiki.contextgarden.net/Math_with_newmat
I tried then to simply add \usemodule[newmat] and compile with context,
but did not work... Code below, error message below below...
Thanks a lot
Matthieu
Code:
\usemodule[newmat]
\starttext
\setupMPpage[offset=1pt]
\switchtobodyfont[10pt]
% Beginning MetaPost graphic
\startMPpage
label.top(btex 1.4 etex scaled 1.00, (10, 10));
label.top(btex $\sigma_t$ etex scaled 1.00, (0, 10));
label.top(btex $\displaystyle \frac{\sigma_t}{a}$ etex scaled 1.00, (0, 10));
\stopMPpage
\stoptext
Error:
! Math error: parameter \Umathfraction_del_size\displaystyle is not set.
l.3 ...t{411}{$\displaystyle \frac {\sigma _t}{a}$
}
inserted text ...ore.mp ; fi ; ;;;]===], false)}
\processMPgraphic ...s ;\!!es , \MPaskedfigure )}}
\egroup \global
\MPinstanc...
\dostartMPpage ...??mg ][#1]\processMPgraphic {#3}
\dostopfittingpage
l.26 \stopMPpage
Le 26/04/2011 10:37, Hans Hagen a écrit :
On 25-4-2011 8:33, mat wrote:
Any idea how I should do? Find below minimal example, that does not work
on my computer when compiling with context...
best use textext ...
label.top(textext(1.4)scaled 1.00,
(10, 10));
label.top(textext($\sigma_t$) scaled 1.00,
(0, 10));
label.top(textext($\displaystyle \frac{\sigma_t}{a}$) scaled 1.00,
(1, 1));
works ok (only tested mkiv); also \frac is available in context
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] Context and metapost: using \frac
On 26-4-2011 12:02, Matthieu Stigler wrote:
Dear Hans
Thanks for your quick answer! I was however not able to produce the
graph with the textext code... Should I actually then use another
compiler? I tried with context and texexec (I thought texexec is the
compiler for mkiv, right? I'm on linux ubuntu).
no, use the 'context' command as texexec is for mkii
I saw also that, as you mention, context has a \frac:
http://wiki.contextgarden.net/Math_with_newmat
indeed, \frac is already there for a long time (ams compatible command)
btw, in mkiv there is no m-newmath
I tried then to simply add \usemodule[newmat] and compile with context,
but did not work... Code below, error message below below...
! Math error: parameter \Umathfraction_del_size\displaystyle is not set.
l.3 ...t{411}{$\displaystyle \frac {\sigma _t}{a}$
}
inserted text ...ore.mp ; fi ; ;;;]===], false)}
make sure that a font is loaded that has math before \starttext is seen
(try with \setupbodyfont[palatino] at the top of your file)
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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