Good afternoon. Many thanks for your answer. I'll try to learn from Metafun macros. (Well, I'll try -- but Mr. Hagen macros are usually too clever for my stupid brain.) As for the PSTricks, I used them some years ago -- before I found MetaPost. I like MetaPost because: 1) the TeX code and figures are in separate files and are compiled separately -- it makes work much faster and reusing code is easier 2) MetaPost allows me calculate figures easily -- most my figures are economic graphs -- most of them is not drawn, but calculated (they are not data charts) 3) MetaPost is well intergrated with ConTeXt, so I have to use it anyway -- I can forget PSTricks and clear my brain :-) Yours Michal Kvasnicka
Before you reinvent round objects called wheels please look over the additional facilities provided by Pstricks, which can be run using Context and the approproiate module.m-pstric.tex. Instructions are embedded in the module. It may well be that the kind of diagrams you are seeking to create in Metapost are already available via Pstricks. There is a very readable Pstricks manual and a supplement.
How do Pstricks and Metapost differ? Well Pstricks is a higher level language, aimed at creating specific things like x/y charts, tree diagrams and so on. Matrapost is a lower level, more generalized facility. Most tasks can be done in either. Common cases will be more easily handled in Pstricks. More unusual situations will require the more general power of Metapost.
John Culleton
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