NAUTY-LABELG(1) Nauty Manual NAUTY-LABELG(1)
NAME
nauty-labelg - canonically label graphs
SYNOPSIS
**labelg **[*-q*] [*sg | C#W#*] [*-fxxx*] [*-S|-t*] [*-i# -I#:# -K#*] [*infile*
[*outfile*]]
DESCRIPTION
Canonically label a file of graphs or digraphs.
**-s **force output to sparse6 format
**-g **force output to graph6 format
**-z **force output to digraph6 format If neither **-s**, **-g **or **-z **are
given, the output format is determined by the header or, if
there is none, by the format of the first input graph. As an
exception, digraphs are always written in digraph6 format.
**-S **Use sparse representation internally.
Note that this changes the canonical labelling. Multiple edges
are not supported. One loop per vertex is ok.
**-t **Use Traces.
Note that this changes the canonical labelling. Multiple edges
and loops are not supported, nor invariants.
**-C**# Make an invariant in 0..#-1 and output the number of graphs
with each value of the invariant.
Don't write graphs unless
**-W **too.
**-W**# (requires **-C**) Output the graphs with this invariant value,
in their original labelling.
Don't write the table.
The output file will have a header if and only if the input file
does.
**-fxxx **Specify a partition of the point set. xxx is any
string of ASCII characters except nul.
This string is
considered extended to infinity on the right with the character
'z'. One character is associated with each point, in the order
given. The labelling used obeys these rules:
(1) the new order of the points is such that the associated
characters are in ASCII ascending order
(2) if two graphs are labelled using the same string xxx,
the output graphs are identical iff there is an
associated-character-preserving isomorphism between them. No
option can be concatenated to the right of **-f**.
**-i**# select an invariant (1 = twopaths, 2 = adjtriang(K), 3 =
triples,
4 = quadruples, 5 = celltrips, 6 = cellquads, 7 = cellquins, 8 =
distances(K), 9 = indsets(K), 10 = cliques(K), 11 = cellcliq(K),
12 = cellind(K), 13 = adjacencies, 14 = cellfano, 15 =
cellfano2, 16 = refinvar(K))
**-I**#:# select mininvarlevel and maxinvarlevel (default 1:1)
**-K**# select invararg (default 3)
**-q **suppress auxiliary information
nauty 2.6.12 October 2019 NAUTY-LABELG(1)