plotT: Plot or Print ordering function for unconditional exact test

In exact2x2: Exact Tests and Confidence Intervals for 2x2 Tables

Plot or Print ordering function for unconditional exact test

Description

The function orderMat prints the values for the ordering function for all possible values of X1 and X2 in matrix form.

The function plotT plots the ranking of the ordering function on an n1+1 by n2+1 grid, where each square represents a possible values for (x1,x2). The default colors are from dark blue (highest) to light blue to white (middle) to light red to dard red (lowest), with black=NA.

Usage

plotT(x, ...)

## S3 method for class 'function'
plotT(x, n1, n2, delta0 = 1, main = "",...)


## S3 method for class 'numeric'
plotT(x, n1, n2, delta0 = 1, main = "",...)


orderMat(x, ...)

## S3 method for class 'function'
orderMat(x,n1,n2,delta0,graphStyle=FALSE,...)

## S3 method for class 'numeric'
orderMat(x,n1,n2,delta0,graphStyle=FALSE,...)

Arguments

x	object, either a Tstat function, or a vector of all (n1+1)*(n2+1) possible values of the function (see details).
n1	sample size in group 1
n2	sample size in group 2
delta0	null value of parameter (if needed for Tstat function)
main	plot title
graphStyle	logical, order rows with lowest x1 value on the bottom?
...	arguments to be passed to the Tstat function

Details

If x is all the values of the Tstat function, then the values should be ordered by cycling through the x1 values (0 to n1) for each x2 value. Specifically, it should be the result of Tstat(X1,n1,X2,n2,delta0) where X1=rep(0:n1,n2+1) and X2=rep(0:n2,each=n1+1).

Examples

parorig<- par(no.readonly=TRUE)
par(mfrow=c(2,2),mar=c(1,3,3,1))
TT1<-pickTstat(method="score", parmtype="ratio", tsmethod="central", alternative="two.sided")
round(orderMat(TT1,8,8,1,graphStyle=TRUE),2)
TT2<-pickTstat(method="simple", parmtype="ratio", tsmethod="central", alternative="two.sided")
TT3<-pickTstat(method="simple", parmtype="difference", tsmethod="central", alternative="two.sided")
plotT(TT2, 8,8, 1, main="Ratio, Simple")
plotT(TT3, 8,8, 0, main="Difference, Simple")
plotT(TT1, 8,8, 1, main="Ratio, Score (delta0=1)")
TF<-pickTstat(method="FisherAdj", parmtype="ratio", tsmethod="central", alternative="two.sided")
plotT(TF,8,8,1, main="FisherAdj")
par(parorig)

exact2x2 documentation built on May 29, 2024, 10:51 a.m.