R: Calculation of networkDynamic statistics.

summary_formula.networkDynamic {tergm} | R Documentation

## Calculation of networkDynamic statistics.

### Description

A method for `summary_formula` 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_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.

### 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.

### See Also

`ergm()`, `networkDynamic`, `ergm-terms`, summary.formula

### 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)

[Package tergm version 4.0.2 Index]