plot.TLMoments: L-Moment-ratio diagram

In TLMoments: Calculate TL-Moments and Convert Them to Distribution Parameters

L-Moment-ratio diagram

Description

Generates a ggplot2 object containing a scatterplot of TL skewness and TL kurtosis as well as the theoretical curves and points of several distributions (for now: GEV, GPD, LN3, GUM, EXP, NORM).

Usage

## S3 method for class 'TLMoments'
plot(x, ...)

## S3 method for class 'numeric'
plot.TLMoments(x, distr = "all", add_center = FALSE, use_internal = TRUE, ...)

## S3 method for class 'matrix'
plot.TLMoments(x, distr = "all", add_center = TRUE, use_internal = TRUE, ...)

## S3 method for class 'list'
plot.TLMoments(x, distr = "all", add_center = TRUE, use_internal = TRUE, ...)

## S3 method for class 'data.frame'
plot.TLMoments(x, distr = "all", add_center = TRUE, use_internal = TRUE, ...)

Arguments

x	object of TLMoments.
...	additional arguments, not used at the moment.
distr	character indicating the plotted theoretical distributions, see details.
add_center	boolean, if TRUE (default, except for vector TLMoments) the center of all TL-moment ratios is printed as a cross.
use_internal	boolean, if TRUE (default) internal pre-calculated values (if available) are used to print curves and points.

Details

distr: this can either be a vector containing the abbreviations of the theoretical distributions (gev, gpd, ln3, pe3, glo, gum, exp, or norm) or one of the shortcuts \"all\" (default), \"only-lines\", or \"only-points\" that indicate all distributions, all distributions displayed as lines (i.e. gev, gpd, ln3, pe3, glo), or all distributions displayed as points (ie. gum, exp, norm), respectively.

Values of theoretical distributions are pre-calculated for several trimmings. If other trimmings are selected this results in a (small) delay for calculation.

Value

A ggplot object.

Methods (by class)

• numeric: plot.TLMoments for numeric vector

• matrix: plot.TLMoments for numeric matrix

• list: plot.TLMoments for numeric list

• data.frame: plot.TLMoments for numeric data.frame

Examples

## Not run: 
xmat <- matrix(rgev(1000, shape = .1), nc = 10)
xvec <- xmat[, 3]
xlist <- lapply(1L:ncol(xmat), function(i) xmat[, i])
xdat <- data.frame(
 station = rep(letters[1:10], each = 100),
 season = rep(c("S", "W"), 50),
 hq = as.vector(xmat)
)

library(ggplot2)
plot(TLMoments(xvec))
plot(TLMoments(xlist), distr = c("gev", "gum"), add_center = FALSE)
plot(TLMoments(xmat), distr = "only-points")
plot(TLMoments(xmat), distr = "only-lines") + scale_colour_viridis_d()
plot(TLMoments(xmat, 0, 1))
plot(TLMoments(xmat, 0, 1)) + coord_cartesian(xlim = c(-.05, .4), ylim = c(.05, .2))
plot(TLMoments(xdat, hq ~ station, 1, 0))

plot(TLMoments(xmat), add_center = FALSE)
plot(TLMoments(xmat), use_internal = FALSE)
plot(TLMoments(xmat, 2, 3))

## End(Not run)

TLMoments documentation built on March 27, 2022, 5:07 p.m.