1NAUTY-RANSUBG(1)                 Nauty Manual                 NAUTY-RANSUBG(1)
2
3
4

NAME

6       nauty-ransubg - extract random graph/digraph from a file of graphs
7

SYNOPSIS

9       ransubg [-lq] [-P#|-P#/#] [-z] [-o] [-m#] [-S#] [infile [outfile]]
10

DESCRIPTION

12              Extract random graph/digraphs of a file of graphs.
13
14              The output file has a header if and only if the input file does.
15              The output format is defined by the header or first graph,
16
17              but is always digraph6 if -z is used.
18
19       -z     Treat the input as a directed graph
20
21       -o     Treat the input as a directed graph and output an oriented graph
22
23       -P# or -P#/#
24              Specify a probability p. -P# is the same as -P1/#
25
26       -m#    Make this many outputs for each input (default 1)
27
28       -l     Canonically label outputs.
29
30       -S#    Set seed for random numbers (default nondeterministic)
31
32              Usually each edge is kept with probability p.  In  the  case  of
33              -o, each edge in one direction only is kept
34
35              with probability p. For edges in both directions, with probabil‐
36              ity p keep one direction randomly chosen  and  with  probability
37              1-p delete both directions.  Thus -oP1 will make a random orien‐
38              tation of an undirected graph.
39
40       -q     Suppress auxiliary information.
41
42
43
44nauty 2.8.8                      November 2023                NAUTY-RANSUBG(1)