inducedSubgraphByPkgs: Return a minimal subgraph based on package name(s)
In BiocPkgTools: Collection of simple tools for learning about Bioc Packages

View source: R/buildPkgDependencyGraph.R

Find the subgraph induced by including specific packages. The induced subgraph is the graph that includes the named packages and all edges connecting them. This is useful for a developer, for example, to examine her packages and their intervening dependencies.

1	inducedSubgraphByPkgs(g, pkgs, pkg_color = "red")

`g`	an igraph graph, typically created by `buildPkgDependencyIgraph`
`pkgs`	character() vector of packages to include. Package names not included in the graph are ignored.
`pkg_color`	character(1) giving color of named packages. Other packages in the graph that fall in connecting paths will be colored as the igraph default.

library(igraph)
g = buildPkgDependencyIgraph(buildPkgDependencyDataFrame())
g2 = inducedSubgraphByPkgs(g, pkgs=c('GenomicFeatures',
'TCGAbiolinksGUI', 'BiocGenerics', 'org.Hs.eg.db', 'minfi', 'limma'))
g2
V(g2)

plot(g2)