1NAUTY-DIRECTG(1)                 Nauty Manual                 NAUTY-DIRECTG(1)
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NAME

6       nauty-directg - generate small digraphs with given underlying graph
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SYNOPSIS

9       directg  [-q] [-u|-T|-G] [-V] [-o|-a] [-f#] [-e#|-e#:#] [-s#/#] [infile
10       [outfile]]
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DESCRIPTION

13              Read undirected graphs and orient their edges  in  all  possible
14              ways.
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16              Edges can be oriented in either or both directions (3 possibili‐
17              ties).  Isomorphic directed graphs derived from the  same  input
18              are suppressed.  If the input graphs are non-isomorphic then the
19              output graphs are also.
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21       -e# | -e#:#
22              specify a value or range of the total number of arcs
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24       -o     orient each edge in only one direction, never both
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26       -a     only make acyclic orientations (implies -o)
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28       -f#    Use only the subgroup that fixes the first # vertices setwise
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30       -T     use a simple text output format (nv ne  edges)  instead  of  di‐
31              graph6
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33       -G     like  -T  but  includes  group  size as third item (if less than
34              10^10)
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36              The group size does not include exchange of isolated vertices.
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38       -V     only output graphs with nontrivial groups (including exchange of
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40       isolated vertices).
41              The -f option is respected.
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43       -u     no output, just count them
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45       -s#/#  Make only a fraction of the orientations: The first integer is
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47              the part number (first is 0) and the second  is  the  number  of
48              parts. Splitting is done per input graph independently.
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50       -q     suppress auxiliary information
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54nauty 2.8.8                      November 2023                NAUTY-DIRECTG(1)