Re: Plotting a graph of a function f, like f(x) = e^x, with MetaPost

[Paul Menzel <paulepanter@users.sourceforge.net>]

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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

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