nauty-complg man page
nauty-complg — complement graphs
complg [-lq] [-r|-R] [infile [outfile]]
Take the complements 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.
Only complement if the complement has fewer directed edges.
Only complement if the complement has fewer directed edges or has the same number of directed edges and is canonically less than the original.
Complement the loops too. By default, preserve them.
Canonically label outputs.
Suppress auxiliary information.