gvcolor.1

GVCOLOR(1) GVCOLOR(1) NAME gvcolor - flow colors through a ranked digraph ( previously known as colorize ) SYNOPSIS gvcolor [ files ] USAGE dot file.dot | gvcolor | dot -T<format> DESCRIPTION gvcolor is a filter that sets node colors from initial seed values. Colors flow along edges from tail to head, and are averaged (as HSB vectors) at nodes. The graph must already have been processed by dot. Appro- priate choice of initial colors yields drawings in which node colors help to emphasize logical relationships between nodes, even when they are spread far apart in the layout. Initial colors must be set externally, using the color attribute of a node. It is often effective to assign colors to a few key source or sink nodes, manually setting their colors by editing the graph file. Color names are as in dot(1): symbolic names or RGB triples. It is best to choose some easily-distinguished but related colors; not necessarily spaced evenly around the color wheel. For example, blue_green, green, and light_yel- low looks better than red, green, blue. Certain graph attributes control the gvcolor algorithm. flow=back reverses the flow of colors from heads to tails. saturation=.1,.9 (or any two numbers between 0 and 1) adjusts the color saturation linearly from least to greatest rank. If Defcolor is set, this color value is applied to any node not otherwise colored. EXIT STATUS The following exit values are returned: 0 Successful completion. 1 If nodes of the graph do not possess a ‘‘pos’’ attribute. BUGS It would be nice to make the program work without relying on an initial pass through dot. AUTHORS Stephen C. North <[email protected]> Emden R. Gansner <[email protected]> SEE ALSO gc(1), dot(1), gvpr(1), ccomps(1), sccmap(1), tred(1), libgraph(3) 21 March 2001 1

Upload
carlos-dorado
Category

Documents
view
214
download
0

Embed Size (px):

description

gv color

Transcript of gvcolor.1

GVCOLOR(1) GVCOLOR(1)

NAMEgvcolor − flow colors through a ranked digraph( previously known ascolorize )

SYNOPSISgvcolor [ files ]

USAGEdot file.dot | gvcolor | dot −T<format>

DESCRIPTIONgvcolor is a filter that sets node colors from initial seed values. Colorsflow along edges from tail to head,and are averaged (as HSB vectors) at nodes.The graph must already have been processed by dot.Appro-priate choice of initial colors yields drawings in which node colors help to emphasize logical relationshipsbetween nodes, even when they are spread far apart in the layout.

Initial colors must be set externally, using thecolor attribute of a node.It is often effective to assign colorsto a few key source or sink nodes, manually setting their colors by editing the graph file. Color names areas indot(1): symbolic names or RGB triples. It is best to choose some easily-distinguished but related col-ors; not necessarily spaced evenly around the color wheel.For example, blue_green, green, and light_yel-low looks better than red, green, blue.

Certain graph attributes control thegvcoloralgorithm. flow=back reverses the flow of colors from heads totails. saturation=.1,.9 (or any two numbers between 0 and 1) adjusts the color saturation linearly fromleast to greatest rank. IfDefcolor is set, this color value is applied to any node not otherwise colored.

EXIT STATUSThe following exit values are returned:

0 Successful completion.

1 If nodes of the graph do not possess a ‘‘pos’’ attribute.

BUGSIt would be nice to make the program work without relying on an initial pass throughdot.

AUTHORSStephen C. North <[email protected]>Emden R. Gansner <[email protected]>

SEE ALSOgc(1), dot(1), gvpr(1), ccomps(1), sccmap(1), tred(1), libgraph(3)

21 March 2001 1