gml2gv,gv2gml - GML-DOT converters


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


   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.


   The following options are supported:

   -v     Turns on verbose mode

   -?     Prints usage information and exits.

          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.

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

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


   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.


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


   dot(1), libcgraph(3)

                             24 June 2011                 GML2GV,GV2GML(1)

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