Cumulative Hazard for Piecewise Constant Hazards

## Arguments

- t
(`numeric`

)

study time-points.

- haz
(`numeric vector`

)

constant transition hazards.

- pw
(`numeric vector`

)

time intervals for the piecewise constant hazards.

## Value

This returns the value of cumulative hazard at time t.

## Examples

```
pwA(1:5, c(0.5, 0.9), c(0, 4))
#> [1] 0.5 1.0 1.5 2.0 2.9
```