freq.curve.all: Compute Frequency Curve for All Distributions

Description

This function is dispatcher on top of the suite of quaCCC functions that compute frequency curves for the L-moments. Frequency curves in hydrologic science is a term typically renaming the more conventional quantile function. The notation CCC represents the three character notation for the distribution: exp, gam, gev, gld, glo, gno, gpa, gum, kap, nor, pe3, wak, and wei. The Cauchy distribution is not used because of its dependency on trimmed L-moments and its general lack of use in applied research problems (at least those familiar to the author). The nonexceedance probabilities to construct the curves are derived from nonexceeds.

Usage

freq.curve.all(lmom,aslog10=FALSE,asprob=TRUE,
                    no2para=FALSE,no3para=FALSE, 
		    no4para=FALSE,no5para=FALSE,
                    step=FALSE,show=FALSE,
                    xmin=NULL,xmax=NULL,xlim=NULL,
                    ymin=NULL,ymax=NULL,ylim=NULL,
                    exp=TRUE,gam=TRUE,gev=TRUE,gld=FALSE,
		    glo=TRUE,gno=TRUE,gpa=TRUE,gum=TRUE,
		    kap=TRUE,nor=TRUE,pe3=TRUE,wak=TRUE,
		    wei=TRUE,...)

Arguments

lmom

A L-moment object from lmom.ub or similar.

aslog10

Compute log10 of quantiles---note that NaNs produced in: log(x, base) will be produced for less than zero values.

asprob

The qnorm function is used to convert nonexceedance probabilities, which are produced by nonexceeds, to standard normal deviates. The normal distribution will plot as straight line when this

no2para

If TRUE, do not run the 2-parameter distributions: exp, gam, gum, and nor.

no3para

If TRUE, do not run the 3-parameter distributions: gev, glo, gno, gpa, pe3, and wei.

no4para

If TRUE, do not run the 4-parameter distributions: kap and gld.

no5para

If TRUE, do not run the 5-parameter distributions: wak.

step

Shows incremental processing of each distribution.

show

Plots all the frequency curves in a simple (crowded) plot.

xmin

Minimum x-axis value to use instead of the automatic value determined from the nonexceedance probabilities. This argument is only used is show=TRUE.

xmax

Maximum x-axis value to use instead of the automatic value determined from the nonexceedance probabilities. This argument is only used is show=TRUE.

xlim

Both limits of the x-axis. This argument is only used is show=TRUE.

ymin

Minimum y-axis value to use instead of the automatic value determined from the nonexceedance probabilities. This argument is only used is show=TRUE.

ymax

Maximum y-axis value to use instead of the automatic value determined from the nonexceedance probabilities. This argument is only used is show=TRUE.

ylim

Both limits of the y-axis. This argument is only used is show=TRUE.

exp