plot.multfisher {multfisher}

Plot Rejection Region from a multfisher Object

Description

Plot two dimensions of the rejection region.

Usage

## S3 method for class 'multfisher'
plot(x, dim = c(1, 2), slice = NULL,
  show.titles = TRUE, ...)

Arguments

x

an object of class multfisher

dim

a vector of length two, indicating which two dimensions of the rejection region to plot. The default is c(1,2). The argument is ignored if x was calculated for only one endpoint.

slice

a named list of numeric values at which the test statistics for the dimensions (assumedly) not included in dim are held constant, see details.

show.titles

logical indicating whether the plot title and explanatory subtitles are shown.

...

further arguments passed to the generic plot function.

Details

The function produces plots of the multivariate rejection regions calculated by mfisher.test. For more than two dimensions, the default slice=NULL shows a projection of the rejection region on the two dimensions indicated in dim. slice may be specified to produce plots of slices through the multivariate rejection region. In that case slice must be a named list of numeric objects. The names must be of the form Ti, where i is replaced by the number of the dimension to be indicated. The numeric value defines at which value the test statistic for the indicated dimension is held constant. (If there are dimensions that are neither indicated in dim nor in slice, the plot is still a projection.)

Author(s)

Robin Ristl, [e-mail]

See Also

mfisher.test, print.multfisher

Examples

## Example with two endpoints
data<-data.frame(endpoint1=c(0,0,1,1,1,0,0,0,0,1,1,1,1,1,1, 0,0,1,0,0,1,1,1,1,1,1,1,1,1,1),
		endpoint2=  c(0,0,0,0,0,1,1,1,1,1,1,1,1,1,1, 0,0,0,1,1,1,1,1,1,1,1,1,1,1,1),
		group=rep(c(0,1),each=15))
plot(mfisher.test(x=data[,c(1:2)],y=data$group,show.region=TRUE),cex=2)

## Example with three endpoints
data3EP<-data.frame(endpoint1=  c(0,0,0,0,0,1,1,0,0,0, 0,0,0,0,1,1,1,1,1,1),
		  endpoint2=  c(0,0,0,0,0,1,0,1,0,0, 0,0,1,1,1,1,1,1,1,1),
		  endpoint3=  c(0,0,0,0,0,0,0,0,1,1, 0,0,0,1,1,1,1,1,1,1),
		  group=rep(c(0,1),each=10))
testgreedy3EP<-mfisher.test(x=data3EP[,1:3],y=data3EP$group,method="alpha.greedy",
	show.region=TRUE,closed.test=TRUE)
## Projecion on the first two dimensions
plot(testgreedy3EP,dim=c(1,2),cex=2)
## Slice at a value of 5 for the third dimension
plot(testgreedy3EP,dim=c(1,2),slice=list(T3=5),cex=2)
## Show all slices through the third dimension
par(mfrow=c(3,3))
for(i in 1:9) {
plot(testgreedy3EP,dim=c(1,2),slice=list(T3=i),show.titles=FALSE,cex=2,xlim=c(0,8),ylim=c(0,10))
title(paste("T3 =",i))
}