CLARIFY(1)                  General Commands Manual                 CLARIFY(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,l2
              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 share a 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
              https://graphviz.org/doc/info/colors.html#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. Ports are
       ignored in this analysis, so having a.x -> b and a.y -> b is also not
       supported.

AUTHOR
       Yifan Hu <yifanhu@yahoo.com>

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

OpenBSD                        26 February 2014                     CLARIFY(1)
