NAME

       unflatten - adjust directed graphs to improve layout aspect ratio

SYNOPSIS

       unflatten [-f] [-llen] [-clen ] [ -o outfile ] [ files ]

DESCRIPTION

       unflatten  is a preprocessor to dot that is used to improve the aspect ratio of graphs having many leaves
       or disconnected nodes.  The usual layout for such a graph is generally  very  wide  or  tall.   unflatten
       inserts invisible edges or adjusts the minlen on edges to improve layout compaction.

OPTIONS

       The following options are supported:

       -l len The minimum length of leaf edges is staggered between 1 and len (a small integer).

       -f     Enables  the  staggering of the -l option to fanout nodes whose indegree and outdegree are both 1.
              This helps with structures such as a -> {w x y z} -> b.  This option only works if the -l flag  is
              set.

       -c len Form disconnected nodes into chains of up to len nodes.

       -o outfile
              causes the output to be written to the specified file; by default, output is written to stdout.

OPERANDS

       The following operand is supported:

       files   Names  of files containing 1 or more graphs in dot format.  If no files operand is specified, the
               standard input will be used.

AUTHORS

       Stephen C. North <north@research.att.com>
       Emden R. Gansner <erg@research.att.com>

SEE ALSO

       gc(1), dot(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), tred(1), libgraph(3)

                                                 21 January 2001                                    UNFLATTEN(1)