This is the command nauty-planarg that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
nauty-planarg - 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
Use nauty-planarg online using onworks.net services