GML2GV,GV2GML(1)            General Commands Manual           GML2GV,GV2GML(1)

NAME
       gml2gv,gv2gml - GML-DOT converters

SYNOPSIS
       gml2gv [ -?v ] [ -ggname ] [ -ooutfile ] [ files ]
       gv2gml [ -y ] [ -?  ] [ -ooutfile ] [ files ]


DESCRIPTION
       gml2gv converts a graph specified in the GML format to a graph in the
       GV (formerly DOT) format.  gv2gml converts a graph specified in the GV
       format to a graph in the GML format.

OPTIONS
       The following options are supported:

       -v     Turns on verbose mode

       -y     Uses attributes according to yWorks.com documentation instead of
              the GML specification.

       -?     Prints usage information and exits.

       -ggname
              The string gname is used as the name of the generated graph.  If
              multiple graphs are generated, subsequent graphs use the name
              gname appended with an integer.

       -ooutfile
              Prints output to the file outfile. If not given, gml2gv uses
              stdout.

OPERANDS
       The following operand is supported:

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

RETURN CODES
       Return 0 if there were no problems during conversion; and non-zero if
       any error occurred.

LIMITATIONS
       As both the graph and graphics models of GV and GML differ
       significantly, the conversion is at best approximate. In particular, it
       is not clear how multiedges are differentiated in GML, so multiedges
       are created in GV with no user-available key. Also, no attribute
       information is lost, in that any GML attributes that aren't converted
       to GV equivalents are retained as attributes in the output graph.

       At present, gv2gml does not support subgraphs and clusters. In
       addition, there does not appear to be a standard mechanism for
       specifying default node and edge attributes in GML, so any attributes
       are repeated for every node and edge.

AUTHORS
       Emden R. Gansner <erg@research.att.com>

SEE ALSO
       dot(1), libcgraph(3)

                                 24 June 2011                 GML2GV,GV2GML(1)