summary_formula.networkDynamic function

Calculation of networkDynamic statistics.

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

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

Arguments

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

Returns

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)

See Also

ergm(), networkDynamic, ergmTerm, summary.formula()