subNetwork: Create a subGraph
In assaron/BioNet: Routines for the functional analysis of biological networks

Description Usage Arguments Value Author(s) Examples

The function creates a subgraph with the nodes given in the nodeList or for these nodes including their direct neighbors.

1	subNetwork(nodeList, network, neighbors=c("none", "first"))

`nodeList`	Character vector of nodes, contained in the subgraph.
`network`	Graph that is used for subgraph extraction.
`neighbors`	Neighborhood, that is chosen for the subgraph extraction. "none" are only the selected nodes, "first" includes the direct neighbors of the selected nodes.

A graph object.

Marcus Dittrich

library(igraph)
el <- cbind(c("a", "b", "c", "d", "e", "f", "d"), c("b", "c", "d", "e", "f", "a", "b"))
graph <- graph.edgelist(el, directed=TRUE)

node.list <- c("a", "b", "c")
graph2 <- subNetwork(nodeList=node.list, network=graph)
## Not run: par(mfrow=c(1,2));
plotModule(graph);
plotModule(graph2)
## End(Not run)

# or in graphNEL format: 
graph3 <- igraph.to.graphNEL(graph)
graph4 <- subNetwork(nodeList=node.list, network=graph3)
graph3
graph4