gridGraphviz (version 0.3-1)

agopenTrue: A function to obtain a laidout Ragraph object

Description

This function is a wrapper for the Rgraphviz function agopen and will produce a laidout Ragraph object with layout more true to the result produced by graphviz.

Usage

agopenTrue(graph, name, nodes, edges, kind = NULL, layoutType = "dot", 
           attrs = list(), nodeAttrs = list(), edgeAttrs = list(),
           subGList = list(), edgeMode = edgemode(graph),
           recipEdges = c("combined", "distinct"))

Value

An object of class Ragraph

Arguments

graph

An object of class graphNEL

nodes

A list of pNode objects

edges

A list of pEdge objects

name

The name of the graph

kind

The type of graph

layoutType

Defines the layout engine. Defaults to dot, and see graphvizCapabilities()$layoutTypes for possible values.

attrs

A list of graphviz attributes

nodeAttrs

A list of specific node attributes

edgeAttrs

A list of specific edge attributes

subGList

A list describing subgraphs for the graph parameter

edgeMode

Whether the graph is directed or undirected

recipEdges

How to handle reciprocated edges, defaults to combined

Author

Ashley Noel Hinton

Details

As of Rgraphviz version 2.2.1 (2013-01-31) agopen:

• Produces graphs of the same size as the current device, or at a default size of 7x7 inches.

• Forces nodes to fixed default height and width.

• Does not pass through edge weight information.

This function returns an Ragraph object with graph and node sizes set by graphviz or by the user. It also ensures edge weight information is passed through.

References

graphviz

See Also

agopen

Examples

gnel <- new("graphNEL",
            nodes=letters[1:3],
            edgeL=list(a=list(edges=c("b", "c")),
                       b=list(),
                       c=list()),
            edgemode="directed")
rag <- agopenTrue(gnel, "")
grid.graph(rag)