bp {event}

Create a Vector of Cumulative Numbers of Previous Events for a Point Process (Birth Processes)

Description

bp creates a vector of length sum(y) of cumulative numbers of previous events for each individual for use in fitting birth processes with ehr. Add one if the process starts at an event.

Usage

bp(y, id, censor=1)

Arguments

y

Vector of times.

id

Vector of corresponding individual identifiers for who had which sequence of times.

censor

Vector of censoring indicators.

Value

bp creates a vector of length sum(y) of cumulative numbers of previous events for each individual for use in fitting birth processes with ehr. Add one if the process starts at an event.

Author(s)

J.K. Lindsey

See Also

ehr, ident, pp, tccov, tpast, ttime, tvcov.

Examples

y <- c(5,3,2,4)
i <- c(1,1,2,2)
birth <- bp(y, i)
birth