Man page - nauty-delptg(1)

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Package: nauty
apt-get install nauty

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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)
	-S # Set random number seed (taken from clock otherwise).
	-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