ergm (version 3.9.4)

summary.formula: Calculation of network or graph statistics or other attributes specified on a formula

Description

Most generally, this function computes those summaries of the object on the LHS of the formula that are specified by its RHS. In particular, if given a network as its LHS and ergm-terms on its RHS, it computes the sufficient statistics associated with those terms.

Usage

# S3 method for formula
summary(object, ...)

Arguments

object

A formula having as its LHS a network object or a matrix that can be coerced to a network object, a network.list, or other types to be summarized using a formula. (See `methods('summary_formula') for the possible LHS types.

…

further arguments passed to or used by methods.

Value

A vector of statistics specified in RHS of the formula.

Details

In practice, summary.formula() is a thin wrapper around the summary_formula() generic, which dispatches methods based on the class of the LHS of the formula.

summary.formula for networks understands the lasttoggle "API".

See Also

ergm(), network(), ergm-terms

Examples

# NOT RUN {
#
# Lets look at the Florentine marriage data
#
data(florentine)
#
# test the summary_formula function
#
summary(flomarriage ~ edges + kstar(2))
m <- as.matrix(flomarriage)
summary(m ~ edges)  # twice as large as it should be
summary(m ~ edges, directed=FALSE) # Now it's correct

# }