search for: tp3518773p3519270

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2011 May 12
3
Help with "apply"
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