Date: Tue, 16 Sep 2008 22:56:36 +0200 From: =?ISO-8859-1?Q?Micha=EBl_Gr=FCnewald?= <michael.grunewald@laposte.net> To: Polytropon <freebsd@edvax.de> Cc: John Almberg <jalmberg@identry.com>, freebsd-questions@freebsd.org Subject: Re: Port for drawing directed graphs? Message-ID: <48D01D84.6080703@laposte.net> In-Reply-To: <20080915163659.90ca2a0b.freebsd@edvax.de> References: <D99E9FAD-34F9-4040-A261-F8F950DF0EE5@identry.com> <20080915163659.90ca2a0b.freebsd@edvax.de>
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Polytropon wrote: > On Mon, 15 Sep 2008 10:31:57 -0400, John Almberg <jalmberg@identry.com> wrote: >> I am working on some software that must, as it's final output, >> produce a printout of a directed graph... nodes, connected by >> directed links. >> >> The printout could be generated by a postscript file, jpg, whatever. >> >> Does anyone know of a utility (in ports?) that can take a data set >> (for example, a two dimensional array that defines the nodes and the >> links between them), and produce a printable graph? >> >> Any help much appreciated. > > I think it's possible to use LaTeX for this, as long as you're > willing to provide the document basis, put an \include for the > drawing contents and then have a small processing script that > generates this file. There is some LaTeX document class that > supports graphs, I think. The output would be PS or PDF. TeX and LaTeX usually come with a tool called METAPOST, which reads instructions to draw a picture and outputs a postscript file. This is definitely the best choice to produce figures t put in LaTeX document, but may be useful in solo operation too. The language for METAPOST is adapted to notations like z1 = 1/2(z2 + z3) or z1l = z1 + left and z1r = z1 + right, so it's a really unusual stuff but one gets quickly accustomed with the basics. There is many web pages providing tips for meta post, I also recommand a paper written by André Heck on the subject. -- Michaël
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