[R] question about apply function

[Andris Jankevics]

Dear R-Users,

For example i have a data matrix with five samples and three variables.

DATA <- matrix(c(1,1,1,2,2,2,3,3,3,4,4,4,5,5,5),nrow=5,ncol=3,byrow=TRUE)
colnames (DATA) <- c("V1","V2","V3")
rownames (DATA) <- c("S1","S2","S3","S4","S5")

I want to normalize all samples to same sum of variables:

NormFun <- function (i) {(i*(1/sum(i)))}

Dnorm <- apply(DATA,1,NormFun)

Why I am getting tranposed matrix Dnorm? And with my experimental data (with 
32k variables) i am getting a slighty different results from:

apply(DATA,1,NormFun)
apply(t(DATA),2,NormFun)

Thankyou,

Andris Jankevics