.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.49.3.
.TH NAUTY-PLANARG "1" "April 2024" "nauty 2.8.8" "Nauty Manual"
.SH NAME
nauty-planarg \- test graphs for planarity and find embeddings or obstructions
.SH SYNOPSIS
.B planarg
[\fI\,-v\/\fR] [\fI\,-nVq\/\fR] [\fI\,-p|-u\/\fR] [\fI\,infile \/\fR[\fI\,outfile\/\fR]]
.SH DESCRIPTION
.IP
For each input, write to output if planar.
.IP
The output file has a header if and only if the input file does.
.TP
\fB\-v\fR
Write non\-planar graphs instead of planar graphs
.TP
\fB\-V\fR
Write report on every input
.TP
\fB\-u\fR
Don't write anything, just count
.TP
\fB\-p\fR
Write in planar_code if planar (without \fB\-p\fR, same format as input)
.TP
\fB\-k\fR
Follow each non\-planar output with an obstruction in sparse6
format (implies \fB\-v\fR, incompatible with \fB\-p\fR)
.TP
\fB\-n\fR
Suppress checking of the result
.TP
\fB\-q\fR
Suppress auxiliary information
.IP
This program permits multiple edges and loops