apply(y, 1, mean)
Alternatively: y.means <- rep(NA, 3)
for(i in 1:3)
y.means[i] <- mean(y[i,])
hope this helps. spencer graves
Thomas Hopper wrote:
Hello,
I've got an array defined as y <- rnorm(3000), dim(y) <- c(3, 1000).
I'd like to produce a 1000-element vector z that is the mean of the corresponding elements of y (like z[1,1] <- mean(y[1,1], y[2,1], y[3,1])), but being new to R, I'm not sure how to do this for all elements at once (or, at least, simply). Any help is appreciated.
Thanks,
Tom
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