nauty-delptg - delete vertices
delptg [-lq] [-a|-b] [-d#|-d#:#]
[-v#|-v#:#] [-r#] [-n#] [-m#|-i] [infile
[outfile]]
- Delete some vertices from a file of graphs.
- The output file has a header if and only if the input file does. No
isomorph reduction is done.
- -l
- Canonically label outputs
-d# -d#:# Only remove vertices with original
degree in the given range
- For digraphs, the out-degree is used.
-n# The number of vertices to delete (default 1).
-v# -v#:# Vertex number or numbers that it is
allowed to delete
- (the first vertex is number 0).
-m# Lower bound on minimum degree of output graphs.
-r# Choose # random sets of points (not necessarily
different)
- -a
- The deleted points must be adjacent.
- -b
- The deleted points must be non-adjacent.
- -i
- Leave deleted vertices as isolates, not compatible with -m.
- No empty graphs are output. No warning is issued if
- -d, -v -n, -m together imply no graphs are
output.
- For digraphs, out-degree is used for -d and -m. -q
Suppress auxiliary information