Rgraphviz (version 2.16.0)

toFile: Render a graph in a file with given format

Description

Render a graph in a file with given format

Usage

toFile(graph, layoutType = "dot", filename, fileType = "dot")

Arguments

graph

an instance of the Ragraph class

layoutType

Which layout algorithm to use. Defaults to dot, and see graphvizCapabilities()$layoutTypes for possible values.

filename

output file name

fileType

Output file type. Defaults to dot, and see graphvizCapabilities()$deviceTypes for possible values.

Value

toFile returns NULL after writing to a file.

Details

This function takes a given Ragraph, does the chosen layout, then renders the output to an external file. Users could view the output file with corresponding viewer.

References

Rgraphviz by E. Ganssner, S. North, www.graphviz.org

Examples

g1_gz <- gzfile(system.file("GXL/graphExample-01.gxl.gz",
                            package="graph"))

if(require(XML)) {
  g1 <- fromGXL(g1_gz)
  ag <- agopen(g1, name="test")

  toFile(ag, layoutType="dot", filename="g1_dot.svg", fileType="svg")
  toFile(ag, layoutType="neato", filename="g1_neato.ps", fileType="ps")
  toFile(ag, layoutType="twopi", filename="g1_twopi.svg", fileType="svg")
}