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edgepaint(1)


NAME

   edgepaint - edge coloring to disambiguate crossing edges

SYNOPSIS

   [ options ] [ -o outfile ] [ files ]

DESCRIPTION

   edgepaint  takes  as  input  a  graph  in DOT format with node position
   information (the pos attribute) and colors the edges in a manner making
   it easier to tell them apart.

OPTIONS

   The following options are supported:

   -accuracy=e
          accuracy with which to find the maximally different coloring for
          each node with regard to its neighbors. Default e = 0.01.

   -angle=a
          color two edges differently if their  incidence  angle  is  less
          than a degrees. Default a=15.

   -random_seed=s
          random  seed  to use. s must be an integer. If s is negative, we
          do |s| iterations with different seeds and pick the best.

   -lightness=l1,l2j
          only applies  for  the  "lab"  color  scheme:  l1  and  l2  must
          integers, with 0 <= l1 <= l2 <=100. By default, we use "0,70"

   -share_endpoint
          if  this  option is specified, edges that shares an node are not
          considered in conflict if they are close to parallel but are  on
          the opposite sides of the node (around 180 degree).

   -o f   write output to file f (default: stdout).

   -color_scheme=c
          specifies  the  color  scheme.  This can be "rgb", "gray", "lab"
          (default); or a comma-separated list of RGB colors in hex (e.g.,
          "#ff0000,#aabbed,#eeffaa")  representing  a palette; or a string
          specifying  a  Brewer  color  scheme   (e.g.,   "accent7";   see
          http://www.graphviz.org/content/color-names#brewer).

   -v     turns on verbose mode.

   -?     Print usage and exit.

BUGS

   At  present,  edgepaint  does  not handle graphs with loops or directed
   multiedges. So, a graph with edges a -> b and b -> a is acceptable, but
   not if it has edges a -> b and a -> b or a -- b and a -- b.

AUTHOR

   Yifan Hu <yifanhu@research.att.com>

SEE ALSO

   gvmap(1), sfdp(1), neato (1), dot(1)

                           26 February 2014                     CLARIFY(1)



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