/ 
Graph-Maker-Other-19
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/ Graph::Maker::QuartetTree

NAME

Graph::Maker::QuartetTree - create quartet trees

SYNOPSIS

use Graph::Maker::QuartetTree;
$graph = Graph::Maker->new ('quartet_tree', level => 2);

DESCRIPTION

Graph::Maker::QuartetTree creates Graph.pm graphs of Mandelbrot's quartet tree.

            level => 3          *---*
                                |
    *---*                       *---*---*   *---*
    |                           |           |
    *---*---*   *---*           *   *---*   *---*---*
    |           |               |   |       |
    *   *---*   *---*---*   *   *   *---*---*
    |   |       |           |   |   |
*   *   *---*---*   *---*   *---*---*---*---*
|   |   |           |                   |   |
*---*---*---*---*   *---*---*   *---*   *   *
            |   |   |           |       |
            *   *   *   *---*   *---*---*
            |       |   |       |        
            *   *   *   *---*---*   *---*
            |   |   |   |           |
        *   *   *---*---*---*---*   *---*---*---*---*
        |   |               |   |   |           |   |
        *---*---*   *---*   *   *   *---*---*   *   *
                |   |       |       |   |   |   |
        *   *   *   *---*---*---*---*   *   *   *
        |   |   |   |               |   |
    *   *   *---*---*           *---*   *---*---*
    |   |           |                       |   |
    *---*---*---*---*                       *   *
                    |                       |
                *---*                       *

Vertex names are currently integer coordinates "X,Y" which are locations taking tree start as 0,0 and first edge East. But don't rely on that. Of course as a graph any locations can be used for vertex display etc.

FUNCTIONS

$graph = Graph::Maker->new('dragon', key => value, ...)

The key/value parameters are

level       => tree expansion level, integer >= 0
graph_maker => subr(key=>value) constructor, default Graph->new

Other parameters are passed to the constructor, either graph_maker or Graph->new().

If the graph is directed (the default) then edges are added both ways between vertices. Option undirected => 1 creates an undirected graph and for it there is a single edge between vertices.

HOUSE OF GRAPHS

House of Graphs entries for graphs here include

19655   level=0, path-2
496     level=1, E tree
30345   level=2
30347   level=3

SEE ALSO

Graph::Maker

HOME PAGE

http://user42.tuxfamily.org/graph-maker-other/index.html

LICENSE

Copyright 2017, 2018, 2019, 2020, 2021 Kevin Ryde

This file is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.

This file is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with This file. If not, see http://www.gnu.org/licenses/.