nauty-planarg(1)

test graphs for planarity and find embeddings or obstructions

Section 1 nauty bookworm source

Description

nauty-planarg - test graphs for planarity and find embeddings or obstructions

planarg [-v] [-nVq] [-p|-u] [infile [outfile]]

For each input, write to output if planar.

The output file has a header if and only if the input file does.

	-v		Write non-planar graphs instead of planar graphs
	-V		Write report on every input
	-u		Don’t write anything, just count
	-p		Write in planar_code if planar (without -p, same format as input)
	-k		Follow each non-planar output with an obstruction in sparse6 format (implies -v, incompatible with -p)
	-n		Suppress checking of the result
	-q		Suppress auxiliary information

This program permits multiple edges and loops