Re: How to get graph module (metapost) to work with ConTeXt minimals?

[Alan BRASLAU <alan.braslau@cea.fr>]

The correct method is to use:
	\usemodule [graph]
and then you can type, for example:
	\startMPcode
		draw begingraph(8cm,6cm) ;
		gdraw (0,0)--(1,1) ;
		endgraph ;
	\stopMPcode
to include a graph with your text.

As pointed out, under mkiv, metapost is processed under one
continuous run, so definitions are retained. This is to be kept
in mind, as some metapost code can then yield errors, in particular,
inconsistent equations and the like.

Alan



On Thursday 30 December 2010 15:18:08 Verhaag, G.C.H.M. wrote:
> Martin 'golodhrim' Scholz wrote:
> >In article <4D1C59EF.3080403@ziggo.nl>, Verhaag, G.C.H.M. wrote:
> >>Hi,
> >>
> >>This might not be the right place to ask this question, but want to give
> >>it a try anyway!
> >>
> >>I've installed the ConTeXt minimals (Mark IV!) recently, and running the
> >>
> >>command:
> >>  context --version
> >>
> >>yields the following output:
> >>  ...
> >>  MTXrun | current version: 2010.07.30 11:35
> >>
> >>Now I want to generate a few plots using the graph-module (by John D.
> >>Hobby) of MetaPost, which I used in the past to make high-quality plots.
> >>
> >>But when I add the following statement:
> >>  input graph ;
> >>
> >>to the preamble of my MetaPost file and run the command:
> >>  mpost plot.mp
> >>
> >>The run aborts with the following messages:
> >>>>texnum.mp
> >>>>texnum.mpx
> >>
> >>! Unable to make mpx file.
> >>l.17 init_numbers(btex
> >>
> >>                      $-$etex, btex$1$etex, btex${\times}10$etex,
> >>
> >>Transcript written on texnum.log.
> >>TeXExec | processing graphic 'texnum.mpx'
> >>TeXExec | runtime: 1.547143
> >>
> >>>>texnum.mp
> >>>>texnum.mpx
> >>
> >>! Unable to make mpx file.
> >>l.17 init_numbers(btex
> >>
> >>                      $-$etex, btex$1$etex, btex${\times}10$etex,
> >>
> >>Transcript written on plot.log.
> >>
> >>So where to go from here? Do I need to install additional TeX related
> >>stuff to get it working? Anybody any suggestions, please? Thanks in
> >>advance!
> >>
> >>Regards,
> >>Gerard Verhaag
> >>
> >>P.S.
> >>
> >>By the way, if I use MetaPost within ConTeXt using:
> >>
> >>\loadmarkfile{m-graph}
> >>
> >>\starttext
> >>
> >> \startMPcode
> >> 
> >>            .
> >>    
> >>    /[MetaPost code]
> >>    
> >>               .
> >>
> >>/ \stopMPcode
> >>\stoptext
> >>
> >>than everything works just fine!
> >>
> >>_________________________________________________________________________
> >>__________ 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
> >>_________________________________________________________________________
> >>__________
> >
> >Hi Gerard,
> >
> >that's because of a change in ConTeXts metapost, you can use
> >
> >\startMPpage
> ><Your MP Code here>
> >\stopMPpage
> >
> >MetaPost from ConTeXt is not able without big changes to run standalone,
> >so you might need to load the MetaPost version from TeXlive, the way how
> >to do so depends on your OS...
> >
> >Greetings
> 
> Hi Martin,
> 
> Okay, thanks for your answer!
> 
> Embedding the code in my ConTeXt file works well, but I was used to
> obtain my MetaPost figures seperately using the mpost-command!
> 
> Regards,
> Gerard Verhaag
___________________________________________________________________________________
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
___________________________________________________________________________________