NAUTY-DIRECTG(1) Nauty Manual NAUTY-DIRECTG(1) NAME nauty-directg - generate small digraphs with given underlying graph SYNOPSIS directg [-q] [-u|-T|-G] [-V] [-o|-a] [-f#] [-e#|-e#:#] [-s#/#] [infile [outfile]] DESCRIPTION Read undirected graphs and orient their edges in all possible ways. Edges can be oriented in either or both directions (3 possibili- ties). Isomorphic directed graphs derived from the same input are suppressed. If the input graphs are non-isomorphic then the output graphs are also. -e# | -e#:# specify a value or range of the total number of arcs -o orient each edge in only one direction, never both -a only make acyclic orientations (implies -o) -f# Use only the subgroup that fixes the first # vertices setwise -T use a simple text output format (nv ne edges) instead of di- graph6 -G like -T but includes group size as third item (if less than 10^10) The group size does not include exchange of isolated vertices. -V only output graphs with nontrivial groups (including exchange of isolated vertices). The -f option is respected. -u no output, just count them -s#/# Make only a fraction of the orientations: The first integer is the part number (first is 0) and the second is the number of parts. Splitting is done per input graph independently. -q suppress auxiliary information nauty 2.8.6 January 2023 NAUTY-DIRECTG(1)
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