.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.49.3.
.TH NAUTY-RANSUBG "1" "April 2024" "nauty 2.8.8" "Nauty Manual"
.SH NAME
nauty-ransubg \- extract random graph/digraphs of a file of graphs
.SH SYNOPSIS
.B ransubg
[\fI\,-lq\/\fR] [\fI\,-P#|-P#/#\/\fR] [\fI\,-z\/\fR] [\fI\,-o\/\fR] [\fI\,-m#\/\fR] [\fI\,-S#\/\fR] [\fI\,infile \/\fR[\fI\,outfile\/\fR]]
.SH DESCRIPTION
.IP
Extract random graph/digraphs of a file of graphs.
.IP
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,
.IP
but is always digraph6 if \fB\-z\fR is used.
.TP
\fB\-z\fR
Treat the input as a directed graph
.TP
\fB\-o\fR
Treat the input as a directed graph and output an oriented graph
.TP
\fB\-P\fR# or \fB\-P\fR#/#
Specify a probability p. \fB\-P\fR# is the same as \fB\-P1\fR/#
.TP
\fB\-m\fR#
Make this many outputs for each input (default 1)
.TP
\fB\-l\fR
Canonically label outputs.
.TP
\fB\-S\fR#
Set seed for random numbers (default nondeterministic)
.IP
Usually each edge is kept with probability p.
In the case of \fB\-o\fR, each edge in one direction only is kept
.IP
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 \fB\-oP1\fR will make a random orientation of an
undirected graph.
.TP
\fB\-q\fR
Suppress auxiliary information.