R: Calculation of networkDynamic statistics.

summary.statistics.networkDynamic {tergm}

R Documentation

Calculation of networkDynamic statistics.

Description

A method for summary.statistics to calculate the specified statistics for an observed networkDynamic at the specified time point(s). See ergm-terms for more information on the statistics that may be specified.

Usage

## S3 method for class 'networkDynamic'
summary.statistics(object, at, ..., basis = NULL)

Arguments

`object`	An R `formula` object with a `networkDynamic` as its LHS. (See `summary.statistics` for more details.)
`at`	A vector of time points at which to calculate the statistics.
`basis`	An optional `networkDynamic` object relative to which the statistics should be calculated.
`...`	Further arguments passed to or used by methods.

Value

A matrix with length(at) rows, one for each time point in at, and columns for each term of the formula, containing the corresponding statistics measured on the network.

Examples

# create a toy dynamic network
my.nD <- network.initialize(100,directed=FALSE)
activate.vertices(my.nD, onset=0, terminus = 10)
add.edges.active(my.nD,tail=1:2,head=2:3,onset=5,terminus=8)

# use a summary formula to display number of isolates and edges
# at discrete time points
summary(my.nD~isolates+edges, at=1:10)