lmomco (version 0.80)

freq.curve.gno: Frequency Curve of the Generalized Normal Distribution

Description

This function returns the quantiles of the Generalized Normal (log-Normal) distribution given a vector of nonexceedance probabilities and the parameters of the distribution. Because in magnitude and frequency analysis the frequency curve is typically the objective, this is a convenient function to increase analysis efficiency.

Usage

freq.curve.gno(fs, para)

Arguments

fs

Vector of nonexceedance probabilities.

para

Parameters of the distribution as from pargno.

Value

• A vector of quantiles for the distribution.

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

pargno, quagno, nonexceeds

Examples

fs <- nonexceeds()
  lmr <- lmom.ub(c(123,34,4,654,37,78))
  para <- pargno(lmr)
  plot(fs,freq.curve.gno(fs,para))