From: Hans Hagen <pragma@wxs.nl>
To: ntg-context@ntg.nl
Subject: Re: m-graph read data and plot
Date: Thu, 13 Aug 2015 21:57:30 +0200 [thread overview]
Message-ID: <55CCF6AA.3000305@wxs.nl> (raw)
In-Reply-To: <185709FD-C9D9-47E0-BB48-ACC6E254E7BE@inradius.net>
On 8/13/2015 9:37 PM, John Kitzmiller wrote:
> On Aug 9, 2015, at 8:38 AM, Alan BRASLAU <alan.braslau@cea.fr
> <mailto:alan.braslau@cea.fr>> wrote:
>>
>> One needs to think about closing the data file as ConTeXt opens a single
>> MP instance that is run throughout the entire document AND over its
>> multiple runs. If the file is left open, a second run will try to read
>> on from the point where it left off.
>>
>> THIS IS A SUBTLE POINT THAT SHOULD BE NOTICED BY ALL MPLIB USERS!
one can also start with:
graph_close_file := true ;
which will close files after drawing
> Thank you for this insight Alan! Two results immediately helpful are:
> 1) data can be put at the top of the .tex file
> 2) autogrids can be rendered and then drawn over
>
> The following may not be the best way, but it works to read data from
> the top of the .tex file and then plot on the autogrid.
>
> % 1 0.5 2.5
> % 2 1 3.5
>
> \usemodule[graph]
> \startMPpage[instance=graph,offset=2mm]
> draw begingraph(3cm,5cm);
> numeric a[];
> gdata("read1.tex", v,
> setrange(0,0,3,4);
> );
> closefrom "read1.tex";
>
> autogrid(,grid.lft) withcolor .7white;
>
> gdata("read1.tex",v,
> for j = 1 upto 3:
> a[j] := scantokens v[j];
> endfor;
> path b;
> augment.b(a1,a2);
> augment.b(a1,a3);
> setrange(0,0,3,4);
> gdraw b;
> );
> closefrom "read1.tex";
> endgraph;
> \stopMPpage
>
>
>
>
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
>
--
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Hans Hagen | PRAGMA ADE
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___________________________________________________________________________________
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
___________________________________________________________________________________
next prev parent reply other threads:[~2015-08-13 19:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.931.1438880362.2446.ntg-context@ntg.nl>
2015-08-06 20:48 ` John Kitzmiller
2015-08-07 10:23 ` Alan BRASLAU
2015-08-07 17:00 ` John Kitzmiller
2015-08-09 12:38 ` Alan BRASLAU
2015-08-13 19:37 ` John Kitzmiller
2015-08-13 19:57 ` Hans Hagen [this message]
2015-08-13 20:31 ` Hans Hagen
2015-08-14 2:39 ` Alan BRASLAU
2015-08-21 14:46 ` Hans Hagen
2015-08-06 15:30 John Kitzmiller
2015-08-06 16:25 ` Hans Hagen
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