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edgepaint

Colorize edges of a graph layout to clarify crossing edges. Graphviz filters: acyclic, bcomps, comps, edgepaint, gvcolor, gvpack, mingle, nop, sccmap, tred, & unflatten. More information: https://graphviz.org/pdf/edgepaint.1.pdf.

Colorize edges of one or more graph layouts (that already have layout information) to clarify crossing edges:

edgepaint {{path/to/layout1.gv}} {{path/to/layout2.gv ...}} > {{path/to/output.gv}}

Colorize edges using a color scheme. (See https://graphviz.org/doc/info/colors.html#brewer):

edgepaint -color-scheme={{accent7}} {{path/to/layout.gv}} > {{path/to/output.gv}}

Lay out a graph and colorize its edges, then convert to a PNG image:

dot {{path/to/input.gv}} | edgepaint | dot -T {{png}} > {{path/to/output.png}}

Display help for edgepaint:

edgepaint -?