.. _spkg_graphs:

graphs: A database of combinatorial graphs
==========================================

Description
-----------

A database of graphs. Created by Emily Kirkman based on the work of
Jason Grout. Since April 2012 it also contains the ISGCI graph database.


Upstream Contact
----------------

-  https://jasongrout.org/graph_database

-  For ISGCI:

   H.N. de Ridder (hnridder@graphclasses.org)

-  For Andries Brouwer's database:

   The data is taken from from Andries E. Brouwer's website
   (https://www.win.tue.nl/~aeb/). Anything related to the data should
   be
   reported to him directly (aeb@cwi.nl)

   The code used to parse the data and create the .json file is
   available at
   https://github.com/nathanncohen/strongly_regular_graphs_database.

Dependencies
------------

N/A

Type
----

standard


Version Information
-------------------

package-version.txt::

    20161026.p0


Equivalent System Packages
--------------------------

arch:

.. CODE-BLOCK:: bash

    $ sudo pacman -S  sagemath-graphs

conda:

.. CODE-BLOCK:: bash

    $ conda install sagemath-graphs

See https://repology.org/project/sagemath-graphs/versions

However, these system packages will not be used for building Sage
because spkg-configure.m4 has not been written for this package;
see https://trac.sagemath.org/ticket/27330