ptrunc {truncdist}

Cumulative distribution function of a truncated random variable

Description

This function compute values of the cumulative distribution function for truncated random variables.

Usage

ptrunc(q, spec, a = -Inf, b = Inf, ...)

Arguments

q

a numeric vector of quantile values

spec

a character value that specifies the underlying probability distribution

a

a numeric value for the lower bound of the random variable

b

a numeric value for the upper bound of the random variable

...

other arguments are are passed to the corresponding quantile function

Value

A vector of probability values.

Author(s)

Frederick Novomestky [e-mail]

Saralees Nadarajah [e-mail]

References

Nadarajah, S. and S. Kotz, 2006. R Programs for Computing Truncated Distributions, Journal of Statistical Software, 16, August 2006, http://www.jstatsoft.org/v16/c02

See Also

dtrunc

Examples

x <- seq( 0, 3, .1 )
cdf <- ptrunc( x, spec="norm", a=1, b=2 )