Sum of two piecewise constant hazards

This returns the sum of two piecewise constant hazards per interval.

getSumPCW(haz1, haz2, pw1, pw2)

Arguments

haz1

(numeric)
first summand (piecewise constant hazard).

haz2

(numeric)
second summand (piecewise constant hazard).

pw1

(numeric)
time intervals of first summand.

pw2

(numeric)
time intervals of second summand.

Value

List with elements hazards and intervals for the sum of two piecewise constant hazards.

Examples

getSumPCW(c(1.2, 0.3, 0.6), c(1.2, 0.7, 1), c(0, 8, 9), c(0, 1, 4))
#> $hazards
#> [1] 2.4 1.9 2.2 1.3 1.6
#> 
#> $intervals
#> [1] 0 1 4 8 9
#>