are.parnor.valid: Are the Distribution Parameters Consistent with the Normal...

In wasquith/lmomco: L-Moments, Censored L-Moments, Trimmed L-Moments, L-Comoments, and Many Distributions

Are the Distribution Parameters Consistent with the Normal Distribution

Description

Is the distribution parameter object consistent with the corresponding distribution? The distribution functions (cdfnor, pdfnor, quanor, and lmomnor) require consistent parameters to return the cumulative probability (nonexceedance), density, quantile, and L-moments of the distribution, respectively. These functions internally use the are.parnor.valid function.

Usage

are.parnor.valid(para, nowarn=FALSE)

Arguments

para	A distribution parameter list returned by parnor or vec2par.
nowarn	A logical switch on warning suppression. If TRUE then options(warn=-1) is made and restored on return. This switch is to permit calls in which warnings are not desired as the user knows how to handle the returned value—say in an optimization algorithm.

Value

TRUE	If the parameters are nor consistent.
FALSE	If the parameters are not nor consistent.

Note

This function calls is.nor to verify consistency between the distribution parameter object and the intent of the user.

Author(s)

W.H. Asquith

References

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

is.nor, parnor

Examples

para <- parnor(lmoms(c(123,34,4,654,37,78)))
if(are.parnor.valid(para)) Q <- quanor(0.5,para)

wasquith/lmomco documentation built on Nov. 13, 2024, 4:53 p.m.