ppexp {bayesDP} | R Documentation |

## Compute cdf of the piecewise exponential distribution

### Description

`ppexp`

is used to compute the cumulative distribution
function of the piecewise exponential distribution. The function is ported
from R to C++ via code adapted from the `msm`

package.

### Usage

```
ppexp(q, x, cuts)
```

### Arguments

`q` |
scalar. The time point at which the cdf is to be computed. |

`x` |
vector or matrix. The hazard rate(s). |

`cuts` |
vector. Times at which the rate changes, i.e., the interval cut
points. The first element of cuts should be 0, and cuts should be in
increasing order. Must be the same length as |

### Details

The code underlying `ppexp`

is written in C++ and adapted from
R code used in the `msm`

package.

### Value

The cumulative distribution function computed at time `q`

,
hazard(s) `x`

, and cut points `cuts`

.

### Examples

```
# Single vector of hazard rates. Returns a single cdf value.
q <- 12
x <- c(0.25, 0.3, 0.35, 0.4)
cuts <- c(0, 6, 12, 18)
pp <- ppexp(q, x, cuts)
# Matrix of multiple vectors of hazard rates. Returns 10 cdf values.
x <- matrix(rgamma(4 * 10, 0.1, 0.1), nrow = 10)
pp <- ppexp(q, x, cuts)
```

[Package

*bayesDP*version 1.3.6 Index]