nauty-planarg(1)
test graphs for planarity and find embeddings or obstructions
SYNOPSIS
planarg
[,-v/] [,-nVq/] [,-p|-u/] [,infile /[,outfile/]]
DESCRIPTION
-
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
