weiplot: Create Weibull Plot.

In kdist: K-Distribution and Weibull Paper

Description

A special type of plot where Weibull distributed data plots as a straight line. This was also originally called Rayleigh paper. Both Rayleigh and exponential distributions also plot as straight lines.

Usage

weiplot(data, n = 70, type = "p", xlim = NULL, ylim = c(0.01, 10),
  main = "Weibull Plot", sub = NULL, ylab = "log(1/1-F(x))",
  ylab2 = "F(x)", xlab = "x", percent = "False")

Arguments

data	data values from which a cumulative density function will be estimated using ecdf(data)
n	number of points required in plot (default n = 70).
type	plot type
xlim	the minimum and maximum to be used for the x-axis
ylim	the minimum and maximum to be used for the y-axis
main	the title of the plot
sub	the sub-title of the plot
ylab	the title of the left y-axis
ylab2	the title of the right y-axis
xlab	the title of the x-axis
percent	logical; display right hand axis as percentages

Details

A Weibull plot uses log paper and has log(1/(1-F(x)) versus x, where the data values x have an empirical cdf of F(x). The plot margins may need to be adjusted so that the right hand axis is visible.

See Also

weilines() adds lines to a Weibull plot

Examples

graphics::par(mar = c(5, 5, 5, 5))
r <- rexp(100000)
weiplot(r, xlim = c(1e-3, 10))
x <- 10^seq(-3, 2, length = 100)
weilines(x, pexp(x))

kdist documentation built on May 2, 2019, 11:20 a.m.