makeVertexAtt: merge data.frame attributes to an igraph (network) object

In brooksandrew/Rsenal: Rsenal (arsenal) of assorted R functions developed over the years

Description

Enriches an igraph object with node/vertex attributes from a data.frame

Usage

makeVertexAtt(g, df, vname, by.df, by.g = "name")

Arguments

g	igraph object to which you want to add a node/vertex attribute
df	data.frame containing the attribute you want to add to igraph
vname	name of column in data.frame df that you will merge into igraph
by.df	unique key in data.frame that you will use to merge attribute into igraph
by.g	unique key in igraph that you will use to merge attribute from data.frame

Value

a vector of attributes that correspond in order with the nodes in your igraph

Examples

require('igraph')
actors <- data.frame(names=c("Alice", "Bob", "Cecil", "David","Esmeralda"),
age=c(48,33,45,34,21),
gender=c("F","M","F","M","F"))
relations <- data.frame(from=c("Bob", "Cecil", "Cecil", "David",
                              "David", "Esmeralda"),
                       to=c("Alice", "Bob", "Alice", "Alice", "Bob", "Alice"),
                       same.dept=c(FALSE,FALSE,TRUE,FALSE,FALSE,TRUE),
                       friendship=c(4,5,5,2,1,1), advice=c(4,5,5,4,2,3))
g <- igraph::graph.edgelist(as.matrix(relations[,c('from', 'to')]), directed=T)

V(g)$age <- makeVertexAtt(g, df=actors, vname='age', by.df='names', by.g='name')

brooksandrew/Rsenal documentation built on May 13, 2019, 7:50 a.m.