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

6       nauty-pickg - select graphs according to a variety of properties
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SYNOPSIS

9       [pickg|countg] [-fp#:#q -V] [--keys] [-constraints -v] [ifile [ofile]]
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DESCRIPTION

12              countg : Count graphs according to their properties.
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14              pickg : Select graphs according to their properties.
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16              ifile, ofile : Input and output files.
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18              '-' and missing names imply stdin and stdout.
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20              Miscellaneous switches:
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22       -p# -p#:#
23              Specify  range  of input lines (first is 1) May fail if input is
24              incremental.
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26       -f     With -p, assume input lines of fixed length (only  used  with  a
27              file in graph6/digraph6 format)
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29       -v     Negate all constraints
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31       -V     List properties of every input matching constraints.
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33       -l     Put  a blank line whenever the first parameter changes, if there
34              are at least two parameters.
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36       -q     Suppress informative output.
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38              Constraints:
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40              Numerical constraints (shown here with following #) can  take  a
41              single  integer value, or a range like #:#, #:, or :#.  Each can
42              also be preceded by  '~',  which  negates  it.    (For  example,
43              -~D2:4 will match any maximum degree which is _not_ 2, 3, or 4.)
44              Constraints are applied to all  input  graphs,  and  only  those
45              which match all constraints are counted or selected.
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47       -n#    number of vertices           -e#  number of edges
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49       -L#    number of loops              -C   strongly connected
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51       -d#    minimum (out-)degree         -D#  maximum (out-)degree
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53       -m#    vertices of min (out-)degree -M#  vertices of max (out-)degree
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55       -u#    minimum (in-)degree          -U#  maximum (in-)degree
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57       -s#    vertices of min (out-)degree -S#  vertices of max (out-)degree
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59       -r     regular                      -b   bipartite
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61       -z#    radius                       -Z#  diameter
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63       -g#    girth (0=acyclic)            -Y#  total number of cycles
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65       -T#    number of triangles          -K#  number of maximal cliques
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67       -B#    smallest side of some bipartition (0 if none)
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69       -H#    number of induced cycles
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71       -E     Eulerian (all degrees are even, connectivity not required)
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73       -a#    group size  -o# orbits  -F# fixed points  -t vertex-transitive
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75       -c#    connectivity (only implemented for 0,1,2).
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77       -i#    min common nbrs of adjacent vertices;     -I# maximum
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79       -j#    min common nbrs of non-adjacent vertices; -J# maximum
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81              Sort keys:
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83       Counts are made for all graphs passing the constraints.
84              Counts
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86              are  given  separately  for each combination of values occurring
87              for the properties listed as sort keys.  A sort  key  is  intro‐
88              duced  by '--' and uses one of the letters known as constraints.
89              These can be combined:  --n --e  --r  is the same  as  --ne  --r
90              and --ner.  The order of sort keys is significant.
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92              The output format matches the input, except that sparse6 is used
93              to output an incremental graph whose predecessor is not output.
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97nauty 2.6.12                     October 2019                   NAUTY-PICKG(1)
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