Graphalyze-0.4: Graph-Theoretic Analysis library. Source code Contents Index

Data.Graph.Analysis.Visualisation Maintainer Ivan.Miljenovic@gmail.com

Contents Graph visualisation Creating images Showing node groupings

Description

Functions to assist in visualising graphs and components of graphs. This module uses code licensed under the 3-Clause BSD license from the mohws project: http://code.haskell.org/mohws/src/Util.hs

Synopsis

graphviz :: (Graph g, Show a, Ord b) => String -> g a b -> [Attribute] -> DotGraph graphvizClusters :: (Graph g, Show c, ClusterLabel a c, Ord b) => String -> g a b -> [Attribute] -> DotGraph data GraphvizOutput = Canon | Cmap | Cmapx | Cmapx_np | Dia | DotOutput | Eps | Fig | Gd | Gd2 | Gif | Gtk | Hpgl | Imap | Imap_np | Ismap | Jpe | Jpeg | Jpg | Mif | Mp | Pcl | Pdf | Pic | Plain | PlainExt | Png | Ps | Ps2 | Svg | Svgz | Tk | Vml | Vmlz | Vrml | Vtx | Wbmp | Xdot | Xlib data GraphvizCommand = DotCmd | Neato | TwoPi | Circo | Fdp runGraphviz :: DotGraph -> GraphvizOutput -> FilePath -> IO Bool runGraphvizCommand :: GraphvizCommand -> DotGraph -> GraphvizOutput -> FilePath -> IO Bool showPath :: Show a => LNGroup a -> String showCycle :: Show a => LNGroup a -> String showNodes :: Show a => LNGroup a -> String

Graph visualisation

Simple wrappers around the Haskell Data.GraphViz library to turn Graphs into basic DotGraphs for processing by the Graphviz application.

graphviz :: (Graph g, Show a, Ord b) => String -> g a b -> [Attribute] -> DotGraph Source

Turns the graph into DotGraph format with the given title and graph attributes. Nodes are labelled, edges aren't.

graphvizClusters :: (Graph g, Show c, ClusterLabel a c, Ord b) => String -> g a b -> [Attribute] -> DotGraph Source

Turns the graph into DotGraph format with the given title and graph attributes. Cluster the nodes based upon their ClusterLabel clusters. Nodes and clusters are labelled, edges aren't.

Creating images

data GraphvizOutput Source

The possible Graphviz outputs, obtained by running dot -Txxx. Note that it is not possible to choose between output variants, and that not all of these may be available on your system. Constructors Canon Cmap Cmapx Cmapx_np Dia DotOutput Eps Fig Gd Gd2 Gif Gtk Hpgl Imap Imap_np Ismap Jpe Jpeg Jpg Mif Mp Pcl Pdf Pic Plain PlainExt Png Ps Ps2 Svg Svgz Tk Vml Vmlz Vrml Vtx Wbmp Xdot Xlib Instances Show GraphvizOutput

data GraphvizCommand Source

The available Graphviz commands. Constructors DotCmd Neato TwoPi Circo Fdp Instances Show GraphvizCommand

runGraphviz :: DotGraph -> GraphvizOutput -> FilePath -> IO Bool Source

Run the recommended Graphviz command on this graph, saving the result to the file provided (note: file extensions are not checked).

runGraphvizCommand :: GraphvizCommand -> DotGraph -> GraphvizOutput -> FilePath -> IO Bool Source

Run the chosen Graphviz command on this graph, saving the result to the file provided (note: file extensions are not checked).

Showing node groupings

Other visualisations. These are mainly replacements for the show function.

showPath :: Show a => LNGroup a -> String Source

Print a path, with "->" between each element.

showCycle :: Show a => LNGroup a -> String Source

Print a cycle: copies the first node to the end of the list, and then calls showPath.

showNodes :: Show a => LNGroup a -> String Source

Show a group of nodes, with no implicit ordering.

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