network (version 1.13.0)

network.density: Compute the Density of a Network

Description

network.density computes the density of its argument.

Usage

network.density(x, na.omit=TRUE, discount.bipartite=FALSE)

Arguments

x

an object of class network

na.omit

logical; omit missing edges from extant edges when assessing density?

discount.bipartite

logical; if x is bipartite, should “forbidden” edges be excluded from the count of potential edges?

Value

The network density.

Warning

network.density relies on network attributes (see network.indicators) to determine the properties of the underlying network object. If these are set incorrectly (e.g., multiple edges in a non-multiplex network, network coded with directed edges but set to “undirected”, etc.), surprising results may ensue.

Details

The density of a network is defined as the ratio of extant edges to potential edges. We do not currently consider edge values; missing edges are omitted from extent (but not potential) edge count when na.omit==TRUE.

References

Butts, C. T. (2008). “network: a Package for Managing Relational Data in R.” Journal of Statistical Software, 24(2). http://www.jstatsoft.org/v24/i02/

Wasserman, S. and Faust, K. (1994). Social Network Analysis: Methods and Applications. Cambridge: Cambridge University Press.

See Also

network.edgecount, network.size

Examples

#Create an arbitrary adjacency matrix
m<-matrix(rbinom(25,1,0.5),5,5)
diag(m)<-0

g<-network.initialize(5)    #Initialize the network
network.density(g)          #Calculate the density