NAME¶

nauty-genrang - generate random graphs

SYNOPSIS¶

genrang [-P#|-P#/#|-e#|-r#|-R#|-d#] [-M#] [-l#] [-m#] [-t] [-T] [-a] [-s|-g|-z] [-S#] [-q] n|n1,n2 num [outfile]

DESCRIPTION¶

Generate random graphs.

n

: number of vertices

n1,n2 : number of vertices (bipartite graph)

num : number of graphs

A bipartite variant is only available if specified below.

-s

: Write in sparse6 format (default)

-g

: Write in graph6 format

-z

: Make random digraphs and write in digraph6 format

-P#/# : Give edge probability; -P# means -P1/#.

Bipartite version available.

-e# : Give the number of edges

Bipartite version available.

-r# : Make regular of specified degree

-d# : Make regular of specified degree (pseudorandom)

With -z, #-in #-out digraph without loops

Bipartite version: this is the degree on the first side.

-M# : In conjunction with -d, make the distribution more uniform

by running a Markov chain for #*n steps starting at the pseudorandom graph.

-R# : Make regular of specified degree but output

as vertex count, edge count, then list of edges

-l# : Maximum loop multiplicity (default 0)

-m# : Maximum multiplicity of non-loop edge (default and minimum 1)

-t

: Make a random spanning tree of a complete graph

or complete bipartite graph

-T

: Make a random tournament (implies -z)

-a

: Make invariant under a random permutation

-S# : Specify random generator seed (default nondeterministic)

-q

: suppress auxiliary output