reliaR (version 0.01)

pp.flex.weibull: Probability versus Probability (PP) plot for the flexible Weibull(FW) distribution

Description

The function pp.flex.weibull() produces a PP plot for the flexible Weibull(FW) based on their MLE or any other estimate. Also, a reference line can be sketched.

Usage

pp.flex.weibull(x, alpha.est, beta.est, main = " ", line = FALSE, ...)

Arguments

x

vector of observations

alpha.est

estimate of the parameter alpha

beta.est

estimate of the parameter beta

main

the title for the plot.

line

logical; if TRUE, a 45 degree line is sketched.

...

additional arguments to be passed to the underlying plot function.

Value

The function pp.flex.weibull() carries out a PP plot for the flexible Weibull(FW).

References

Bebbington, M., Lai, C.D. and Zitikis, R. (2007). A flexible Weibull extension, Reliability Engineering and System Safety, 92, 719-726.

See Also

qq.flex.weibull for QQ plot and ks.flex.weibull function;

Examples

## Load data sets
data(repairtimes)
## Maximum Likelihood(ML) Estimates of alpha & beta for the data(repairtimes)
## Estimates of alpha & beta using 'maxLik' package
## alpha.est = 0.07077507, beta.est = 1.13181535

pp.flex.weibull(repairtimes, 0.07077507, 1.13181535, main = " ", line = TRUE)