ghc-graphviz

This library provides bindings for the Dot language used by the Graphviz (<http://graphviz.org/>) suite of programs for visualizing graphs, as well as functions to call those programs. Main features of the graphviz library include: * Almost complete coverage of all Graphviz attributes and syntax. * Support for specifying clusters. * The ability to use a custom node type. * Functions for running a Graphviz layout tool with all specified output types. * The ability to not only generate but also parse Dot code with two options: strict and liberal (in terms of ordering of statements). * Functions to convert FGL graphs and other graph-like data structures to Dot code - including support to group them into clusters - with a high degree of customization by specifying which attributes to use and limited support for the inverse operation. * Round-trip support for passing an FGL graph through Graphviz to augment node and edge labels with positional information, etc.

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