rtpwexp {lrstat}

Random number generation function of truncated piecewise exponential distribution

Description

Obtains random samples from a truncated piecewise exponential distribution.

Usage

rtpwexp(n, piecewiseSurvivalTime = 0, lambda = 0.0578, lowerBound = 0)

Arguments

n

The number of observations.

piecewiseSurvivalTime

A vector that specifies the starting time of piecewise exponential survival time intervals. Must start with 0, e.g., c(0, 6) breaks the time axis into 2 event intervals: [0, 6) and [6, Inf). Defaults to 0 for exponential distribution.

lambda

A vector of hazard rates for the event. One for each analysis time interval.

lowerBound

The left truncation time point for the survival time. Defaults to 0 for no truncation.

Value

The random numbers from truncated piecewise exponential distribution.

Author(s)

Kaifeng Lu, [e-mail]

Examples

rtpwexp(n = 10, piecewiseSurvivalTime = c(0, 6, 9, 15),
        lambda = c(0.025, 0.04, 0.015, 0.007))