06-18-2010
EEEK - OSLEVEL -r is now reverted back to original level
Dont know what happened, my AIX 53 TL6 os just reverted back to original TL4 from whence I started this week. Is there a commad to check the ODM or kernel or something to ensure stability?
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LEARN ABOUT DEBIAN
graph::bitmatrix
Graph::BitMatrix(3pm) User Contributed Perl Documentation Graph::BitMatrix(3pm)
NAME
Graph::BitMatrix - create and manipulate a V x V bit matrix of graph G
SYNOPSIS
use Graph::BitMatrix;
use Graph::Directed;
my $g = Graph::Directed->new;
$g->add_...(); # build $g
my $m = Graph::BitMatrix->new($g, %opt);
$m->get($u, $v)
$m->set($u, $v)
$m->unset($u, $v)
$m->get_row($u, $v1, $v2, ..., $vn)
$m->set_row($u, $v1, $v2, ..., $vn)
$m->unset_row($u, $v1, $v2, ..., $vn)
$a->vertices()
DESCRIPTION
This class enables creating bit matrices that compactly describe the connected of the graphs.
Class Methods
new($g)
Create a bit matrix from a Graph $g. The %opt, if present, can have the following options:
o connect_edges
If true or if not present, set the bits in the bit matrix that correspond to edges. If false, do not set any bits. In either
case the bit matrix of V x V bits is allocated.
Object Methods
get($u, $v)
Return true if the bit matrix has a "one bit" between the vertices $u and $v; in other words, if there is (at least one) a vertex going
from $u to $v. If there is no vertex and therefore a "zero bit", return false.
set($u, $v)
Set the bit between the vertices $u and $v; in other words, connect the vertices $u and $v by an edge. The change does not get
mirrored back to the original graph. Returns nothing.
unset($u, $v)
Unset the bit between the vertices $u and $v; in other words, disconnect the vertices $u and $v by an edge. The change does not get
mirrored back to the original graph. Returns nothing.
get_row($u, $v1, $v2, ..., $vn)
Test the row at vertex "u" for the vertices "v1", "v2", ..., "vn" Returns a list of n truth values.
set_row($u, $v1, $v2, ..., $vn)
Sets the row at vertex "u" for the vertices "v1", "v2", ..., "vn", in other words, connects the vertex "u" to the vertices "vi". The
changes do not get mirrored back to the original graph. Returns nothing.
unset_row($u, $v1, $v2, ..., $vn)
Unsets the row at vertex "u" for the vertices "v1", "v2", ..., "vn", in other words, disconnects the vertex "u" from the vertices "vi".
The changes do not get mirrored back to the original graph. Returns nothing.
vertices
Return the list of vertices in the bit matrix.
ALGORITHM
The algorithm used to create the matrix is two nested loops, which is O(V**2) in time, and the returned matrices are O(V**2) in space.
AUTHOR AND COPYRIGHT
Jarkko Hietaniemi jhi@iki.fi
LICENSE
This module is licensed under the same terms as Perl itself.
perl v5.10.0 2005-04-16 Graph::BitMatrix(3pm)