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unflatten(1)                                                      unflatten(1)




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  lay-
       out 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)

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