degrange-ergmTerm {ergm}

Degree range

Description

This term adds one network statistic to the model for each element of from (or to ); the i th such statistic equals the number of nodes in the network of degree greater than or equal to from[i] but strictly less than to[i] , i.e. with edges in semiopen interval ⁠[from,to)⁠ .

Usage

# binary: degrange(from, to=+Inf, by=NULL, homophily=FALSE, levels=NULL)

Arguments

from, to

vectors of distinct integers. If one of the vectors have length 1, it is recycled to the length of the other. Otherwise, it must have the same length.

by, levels, homophily

the optional argument by specifies a vertex attribute (see Specifying Vertex attributes and Levels (?nodal_attributes) for details). If this is specified and homophily is TRUE , then degrees are calculated using the subnetwork consisting of only edges whose endpoints have the same value of the by attribute. If by is specified and homophily is FALSE (the default), then separate degree range statistics are calculated for nodes having each separate value of the attribute. levels selects which levels of by' to include.

Details

This term can only be used with undirected networks; for directed networks see idegrange and odegrange . This term can be used with bipartite networks, and will count nodes of both first and second mode in the specified degree range. To count only nodes of the first mode ("actors"), use b1degrange and to count only those fo the second mode ("events"), use b2degrange .

See Also

ergmTerm for index of model terms currently visible to the package.

Keywords

categorical nodal attribute, undirected, binary