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Manual Reference Pages  -  GRAPH::EASY::LAYOUT::FORCE (3)

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NAME

Graph::Easy::Layout::Force - Force-based layouter for Graph::Easy

CONTENTS

SYNOPSIS



        use Graph::Easy;
       
        my $graph = Graph::Easy->new();

        $graph->add_edge (Bonn, Berlin);
        $graph->add_edge (Bonn, Ulm);
        $graph->add_edge (Ulm, Berlin);

        $graph->layout( type => force );

        print $graph->as_ascii( );

        # prints:
       
        #   +------------------------+
        #   |                        v
        # +------+     +-----+     +--------+
        # | Bonn | --> | Ulm | --> | Berlin |
        # +------+     +-----+     +--------+



DESCRIPTION

Graph::Easy::Layout::Force contains routines that calculate a force-based layout for a graph.

Nodes repell each other, while edges connecting them draw them together.

The layouter calculates the forces on each node, then moves them around according to these forces until things have settled down.

Used automatically by Graph::Easy.

EXPORT

Exports nothing.

SEE ALSO

Graph::Easy.

METHODS

This module injects the following methods into Graph::Easy:

_layout_force()

Calculates the node position with a force-based method.

AUTHOR

Copyright (C) 2004 - 2007 by Tels <http://bloodgate.com>.

See the LICENSE file for information.

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perl v5.20.3 GRAPH::EASY::LAYOUT::FORCE (3) 2013-05-25

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