dils (version 0.8.1)

IgraphFromEdgelist: Convert an edgelist to an igraph

Description

Given the adjacency matrix for a network return a data.frame listing all possible edges and the weights for each edge.

Usage

IgraphFromEdgelist(elist, directed = TRUE)

Arguments

elist

data.frame, see 'Details' for formatting assumptions.

directed

logical, If TRUE, the returned igraph is directed.

Value

igraph, If the edgelist third column has values other than 0, 1 then the weights are stored in E(returned graph)$weight.

Details

This assumes that elist is a data.frame with three columns. Each row is an edge in the network. The first column lists the node the edge is coming from, the second column lists the node the edge is going to, and the third column lists the weight of the edge.

References

https://github.com/shaptonstahl/

See Also

EdgelistFill

Examples

edgelist <- cbind(expand.grid(letters[1:2], letters[1:2]), runif(4))
g <- IgraphFromEdgelist(edgelist)
get.edgelist(g)
E(g)$weight
plot(g, edge.width=5*E(g)$weight, edge.curved=TRUE)