graph::easy::layout(3pm) [debian man page]

Graph::Easy::Layout(3pm)				User Contributed Perl Documentation				  Graph::Easy::Layout(3pm)

NAME

       Graph::Easy::Layout - Layout the graph from Graph::Easy

SYNOPSIS

	       use Graph::Easy;

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

	       my $bonn = Graph::Easy::Node->new(
		       name => 'Bonn',
	       );
	       my $berlin = Graph::Easy::Node->new(
		       name => 'Berlin',
	       );

	       $graph->add_edge ($bonn, $berlin);

	       $graph->layout();

	       print $graph->as_ascii( );

	       # prints:

	       # +------+     +--------+
	       # | Bonn | --> | Berlin |
	       # +------+     +--------+

DESCRIPTION

       "Graph::Easy::Layout" contains just the actual layout code for Graph::Easy.

METHODS

       "Graph::Easy::Layout" injects the following methods into the "Graph::Easy" namespace:

   layout()
	       $graph->layout();

       Layout the actual graph.

   _assign_ranks()
	       $graph->_assign_ranks();

       Used by "layout()" to assign each node a rank, so they can be sorted and grouped on these.

   _optimize_layout
       Used by "layout()" to optimize the layout as a last step.

EXPORT

       Exports nothing.

SEE ALSO

       Graph::Easy.

AUTHOR

       Copyright (C) 2004 - 2008 by Tels <http://bloodgate.com>

       See the LICENSE file for information.

perl v5.14.2							    2011-12-23						  Graph::Easy::Layout(3pm)

Graph::Easy::Layout::Force(3pm) 			User Contributed Perl Documentation			   Graph::Easy::Layout::Force(3pm)

NAME

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

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.

perl v5.14.2							    2011-12-23					   Graph::Easy::Layout::Force(3pm)