plot-methods: Methods for Function plot

In ChainLadder: Statistical Methods and Models for Claims Reserving in General Insurance

Methods for Function plot

Description

Methods for function plot to produce different diagonostic plots for an object of class "MultiChainLadder".

Usage

## S4 method for signature 'MultiChainLadder,missing'
plot(x, y, which.plot=1:4, 
						which.triangle=NULL, 
						main=NULL,  
						portfolio=NULL,
						lowess=TRUE, 
						legend.cex=0.75,...)

Arguments

x	An object of class "MultiChainLadder".
y	"missing"
which.plot	This specifies which type of plot is desired. Its range is 1:5, but defaults to 1:4. "1" is the barplot of observed losses and predicted IBNR stacked and MSE predictions as error bars; "2" is a trajectory plot of the development pattern; "3" is the residual plot of standardized residuals against the fitted values; "4" is the Normal-QQ plot of the standardized residuals. "5" is the "xyplot" of development with confidence intervals for each accident year. Note that "3" and "4" are not available for portfolio.
which.triangle	This specifies which triangles are to be plotted. Default value is NULL, where all triangles plus the portfolio result will be plotted.
main	It should be a list of titles for each plot. If not supplied, use default titles.
portfolio	It specifies which triangles are to be summed as the portfolio, to be passed on to summary.
lowess	Logical. If TRUE, smoothing lines will be added on residual plots.
legend.cex	plotting parameter to be passes on to cex in legend if which.plot=1.
...	optional graphical arguments.

See Also

See also MultiChainLadder

Examples

## Not run: 
data(liab)
fit.liab <- MultiChainLadder(liab)

# generate diagonostic plots
par(mfcol=(c(3,2)))
plot(fit.liab,which.plot=1:2)

par(mfrow=(c(2,2)))
plot(fit.liab,which.plot=3:4)

plot(fit.liab,which.triangle=1,which.plot=5)
graphics.off()

## End(Not run)

ChainLadder documentation built on Sept. 11, 2024, 8:35 p.m.