Row paired t-tests

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Description

Performs t-tests for paired data row by row.

Usage

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Arguments

mat

Matrix with data to be tested (for example, log-ratios in microarray experiments).

Details

This function is much faster than employing apply with FUN=t.test.

Value

Vector with t-test statistics.

Examples

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## The function is currently defined as
function(mat){ 
m<-rowMeans(mat,na.rm=TRUE) 
sd<-rowSds(mat,na.rm=TRUE)  
tstat<-m/(sd*sqrt(1/dim(mat)[2])) 
return(tstat)}