R/correctPredsPermute1.R

In logicFS: Identification of SNP Interactions

`correctPredsPermute1` <-
function(tree,newdata,newcl,n.var,iter,knot,cortree){
	corpreds<-numeric(n.var)
	le<-getTree(tree,add="X")
	mat.samp<-matrix(0,length(newcl),iter)
	newdata<-as.data.frame(newdata)
	colnames(newdata)<-paste("X",1:n.var,"X",sep="")
	#attach(newdata)
	with(newdata,
		{for(i in knot){
			tmp<-newdata[,i]
			for(j in 1:iter)
				mat.samp[,j]<-sample(tmp)
			new.le<-gsub(paste("X",i,"X",sep=""),"mat.samp",le)
			mat.eval<-eval(parse(text=new.le))
			corperm<-colSums(mat.eval==newcl)
			corpreds[i]<-cortree-mean(corperm)
		}}
	)
	#detach(newdata)
	corpreds
}