gvcolor

gvcolor [files]

gvcolor (formerly colorize) is a Graphviz filter that sets node colors from initial seed values on a ranked digraph. Colors flow along edges from tail to head and are averaged, as HSB vectors, at each node, producing a visual gradient across the graph.The graph must already be laid out by dot (so nodes carry position/rank information), and initial colors are set via the color attribute on seed nodes. The graph attribute flow=back reverses the direction colors propagate, saturation=min,max adjusts saturation linearly across ranks, and Defcolor sets a fallback color for uncolored nodes.

FILES

Input graph files already laid out by dot. Reads stdin if none given.

Requires a graph already processed by dot; exits with status 1 if nodes lack position information. Related but distinguishable seed colors (e.g., blue-green, green, light yellow) work best.

dot(1), gc(1), gvpr(1), ccomps(1), sccmap(1), tred(1)

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