Computes colors for vertices according to their attributes.

This function returns a list of colors for vertices, assigned similar colors if they share a common attribute (ex: in the same pathway, etc).

colorVertexByAttr(graph, attr.name, col.palette = palette())

Arguments

graph

An annotated igraph object.

attr.name

The attribute name (ex: "pathway") by which vertices will be colored. Complex attributes, where a vertex belongs to more than one group, are supported.

col.palette

A color palette, or a palette generating function (ex:

col.palette=rainbow

).

Value

A list of colors (in HEX format) for vertices.

See also

Other Plotting methods: layoutVertexByAttr(), plotAllNetworks(), plotClassifierROC(), plotClusterMatrix(), plotCytoscapeGML(), plotNetwork(), plotPathClassifier(), plotPaths()

Author

Ahmed Mohamed

Examples

  data("ex_kgml_sig")
  v.colors <- colorVertexByAttr(ex_kgml_sig, "pathway")
#> This graph was created by an old(er) igraph version.
#> ℹ Call `igraph::upgrade_graph()` on it to use with the current igraph version.
#> For now we convert it on the fly...
  plotNetwork(ex_kgml_sig, vertex.color=v.colors)