mixtools (version 1.1.0)

rexpmix: Simulate from Mixtures of Exponentials

Description

Simulate from a mixture of univariate exponential distributions.

Usage

rexpmix(n, lambda = 1, rate = 1)

Arguments

n

Number of cases to simulate.

lambda

Vector of mixture probabilities, with length equal to $m$, the desired number of components (subpopulations). This is assumed to sum to 1.

rate

Vector of component rates.

Value

rexpmix returns an $n$-vector sampled from an $m$-component mixture of univariate exponential distributions.

See Also

rnormmix, rmvnormmix for Gaussian mixtures, rweibullmix for mixture of Weibull distributions.

Examples

# NOT RUN {
## Generate data from a 2-component mixture of exponentials.
n=300 # sample size
m=2 # nb components
lambda=c(1/3, 2/3); rate = c(1,1/10) # parameters
set.seed(1234)
x <- rexpmix(n, lambda, rate) # iid ~ exp mixture

## histogram of the simulated data.
hist(x, col=8)
# }