R: Compute the Density of a Network

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?

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.

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.

Author(s)

Carter T. Butts [email protected]

References

Butts, C. T. (2008). “network: a Package for Managing
Relational Data in R.” Journal of Statistical Software, 24(2).
https://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

[Package network version 1.18.1 Index