attract (version 1.24.0)

calcModfstat: Function calculates a modified F-statistic for a set of cluster assignments.

Description

Function calculates a modified F-statistic for a set of cluster assignments.

Usage

calcModfstat(exprs.dat, cl, class.vector)

Arguments

exprs.dat

a matrix of gene expression values.

cl

a vector of cluster assignments.

class.vector

a vector specifying group membership of the samples.

Value

a modified F-statistic (average MSS/average RSS) value for a set of cluster assignments.

Details

This function is called internally by findSynexprs.

Examples

## Not run: 
# library(cluster)
# data(subset.loring.eset)
# clustObj <- agnes(as.dist(1-t(cor(exprs(subset.loring.eset)))))
# cfmod.vals <- NULL 
# for( i in 1:10 ){
# 	cfmod.vals <- c(cfmod.vals, calcModfstat(exprs(subset.loring.eset), cutree(clustObj,i), pData(subset.loring.eset)$celltype))
# }
# k <- (1:10)[cfmod.vals==max(cfmod.vals)]			
# ## End(Not run)