nauty-ransubg - extract random graph/digraphs of a file of
graphs
ransubg [-lq] [-P#|-P#/#] [-z]
[-o] [-m#] [-S#] [infile [outfile]]
- Extract random graph/digraphs of a file of graphs.
- The output file has a header if and only if the input file does. The
output format is defined by the header or first graph,
- but is always digraph6 if -z is used.
- -z
- Treat the input as a directed graph
- -o
- Treat the input as a directed graph and output an oriented graph
- -P# or -P#/#
- Specify a probability p. -P# is the same as -P1/#
- -m#
- Make this many outputs for each input (default 1)
- -l
- Canonically label outputs.
- -S#
- Set seed for random numbers (default nondeterministic)
- Usually each edge is kept with probability p. In the case of -o,
each edge in one direction only is kept
- with probability p. For edges in both directions, with probability p keep
one direction randomly chosen and with probability 1-p delete both
directions. Thus -oP1 will make a random orientation of an
undirected graph.
- -q
- Suppress auxiliary information.