is.durational function

Testing for duration dependent models

These functions test whether an ERGM is duration dependent or not.

The method for NULL always returns FALSE by convention.

is.durational(object, ...)

## S3 method for class '`NULL`'
is.durational(object, ...)

## S3 method for class 'ergm_model'
is.durational(object, ...)

## S3 method for class 'ergm_state'
is.durational(object, ...)

## S3 method for class 'formula'
is.durational(object, response = NULL, basis = ergm.getnetwork(object), ...)

Arguments

• object: An ERGM formula, ergm_model object, or ergm_state object.
• ...: Unused at this time.
• response, basis: See ergm().

Returns

TRUE if the ERGM terms in the model are duration dependent; FALSE otherwise.

Methods (by class)

• is.durational(ergm_model): Test if the ergm_model has duration-dependent terms, which call for lasttoggle data structures.
• is.durational(ergm_state): Test if the ergm_state has duration-dependent terms, which call for lasttoggle data structures.