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lmomco (version 0.6)

cdfgam: Cumulative Distribution Function of the Gamma Distribution

Description

This function computes the cumulative probability or nonexceedance probability of the Gamma distribution given parameters ($\alpha$ and $\beta$) of the distribution computed by pargam. The cumulative distribution function of the distribution has no explicit form, where $\alpha$ is a shape parameter and $\beta$ is a scale parameter in the R syntax.

Usage

cdfgam(x, para)

Arguments

x
A real value.
para
The parameters from pargam or similar.

Value

  • Nonexceedance probability ($F$) for $x$.

References

Hosking, J.R.M., 1990, L-moments---Analysis and estimation of distributions using linear combinations of order statistics: Journal of the Royal Statistical Society, Series B, vol. 52, p. 105--124.

Hosking, J.R.M., 1996, FORTRAN routines for use with the method of L-moments: Version 3, IBM Research Report RC20525, T.J. Watson Research Center, Yorktown Heights, New York.

Hosking, J.R.M. and Wallis, J.R., 1997, Regional frequency analysis---An approach based on L-moments: Cambridge University Press.

See Also

quagam, pargam

Examples

Run this code
lmr <- lmom.ub(c(123,34,4,654,37,78))
  cdfgam(50,pargam(lmr))

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