# nauty-amtog - Man Page

read graphs in matrix format

## Synopsis

**amtog** [*-n#sgzhq*] [*-o#*] [*infile* [*outfile*]]

## Description

Read graphs in matrix format.

- -n#
Set the initial graph order to # (no default). This can be overridden in the input.

- -g
Write the output in graph6 format (default).

- -s
Write the output in sparse6 format.

- -z
Write the output in digraph6 format.

- -h
- -w
Don't warn about loops (which are suppressed for

**-g**)- -q
Suppress auxiliary information.

- -o#
Treat digit # as 1 and other digits as 0.

Input consists of a sequence of commands restricted to:

- n=#
set number of vertices (no default) The = is optional.

- m
Matrix to follow An 'm' is also assumed if a digit is encountered.

- M
Complement of matrix to follow (as m)

- t
Upper triangle of matrix to follow, row by row

excluding the diagonal.

- T
Complement of upper trangle to follow (as t)

- s
Upper triangle of matrix to follow, row by row

excluding the diagonal; lower triangle is complement.

- q
exit (optional)