Not Sexy Graph State Calculator 0.1 (Default branch)
NSGSC (Not Sexy Graph State Calculator) can calculate graph states that represent multi-qubit in quantum computing. In quantum computing, a graph state is a special type of multi-qubit state that can be represented by a graph. Each qubit is represented by a vertex of the graph, and there is an edge between every interacting pair of qubits. In particular, they are a convenient way of representing certain types of entangled states. Graph states are useful in quantum error correcting codes, entanglement measurement and purification, and for characterization of computational resources in measurement-based quantum computing models.
Graph::Writer::VCG(3pm) User Contributed Perl Documentation Graph::Writer::VCG(3pm)NAME
Graph::Writer::VCG - write out directed graph in VCG format
SYNOPSIS
use Graph;
use Graph::Writer::VCG;
$graph = Graph->new();
# add edges and nodes to the graph
$writer = Graph::Writer::VCG->new();
$writer->write_graph($graph, 'mygraph.vcg');
DESCRIPTION
Graph::Writer::VCG is a class for writing out a directed graph in the file format used by the VCG tool, originally developed for
Visualising Compiler Graphs. The graph must be an instance of the Graph class, which is actually a set of classes developed by Jarkko
Hietaniemi.
If you have defined any attributes for the graph, nodes, or edges, they will be written out to the file, as long as they are attributes
understood by VCG.
METHODS
new()
Constructor - generate a new writer instance.
$writer = Graph::Writer::VCG->new();
This doesn't take any arguments.
write_graph()
Write a specific graph to a named file:
$writer->write_graph($graph, $file);
The $file argument can either be a filename, or a filehandle for a previously opened file.
KNOWN BUGS AND LIMITATIONS
o Attributes with non-atomic values aren't currently handled. This includes the loc, classname, colorentry, and infoname attributes for
graphs, and the loc attribute for nodes,
o Can currently only handle graph, node, and edge elements and their attributes. So doesn't know about foldnode_defaults and things like
that.
SEE ALSO
http://www.cs.uni-sb.de/RW/users/sander/html/gsvcg1.html
The home page for VCG.
Graph
Jarkko Hietaniemi's modules for representing directed graphs, available from CPAN under modules/by-module/Graph/
Algorithms in Perl
The O'Reilly book which has a chapter on directed graphs, which is based around Jarkko's modules.
Graph::Writer
The base-class for Graph::Writer::VCG
AUTHOR
Neil Bowers <neil@bowers.com>
COPYRIGHT
Copyright (c) 2001-2012, Neil Bowers. All rights reserved. Copyright (c) 2001, Canon Research Centre Europe. All rights reserved.
This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2012-02-14 Graph::Writer::VCG(3pm)