[R] Help with "apply"

From: M.Ribeiro <mresendeufv_at_yahoo.com.br>
Date: Thu, 12 May 2011 14:23:08 -0700 (PDT)

Hello R gurus,

I have a simple routine using for loops that i was just trying to make it faster

y <- rnorm(10)
Nindiv <- 10
x <-matrix(sample(c(0:2),50,re = T),10)
gtemp <- rnorm(10)
ycorr <- array(0,c(Nindiv,1))
for (i in 1:Nindiv) {

	for (k in 1:ncol(x)) {
		ycorr[i] <- y[i] - x[i,k]*gtemp[k]


It works fine but I wanted to make it faster and I think an apply function could probably solve this problem.
Any suggestions? Thanks

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Received on Thu 12 May 2011 - 22:21:47 GMT

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