Analog to matlab repmat function
Thanks a lot to all of you! Now I see, that use of R (and S) is very different from use of Matlab. There is no one-to-one correspondence. I'm shy to ask so stupid questions, but name of language R makes it hard to find relevant links trough google. Thanks for pointing to "S Poetry", I would never find it alone, since I was looking for R-related info. Thanks, Daniil.
On 5/29/06, Patrick Burns <pburns at pburns.seanet.com> wrote:
S Poetry may be of use to you. Patrick Burns patrick at burns-stat.com +44 (0)20 8525 0696 http://www.burns-stat.com (home of S Poetry and "A Guide for the Unwilling S User") Daniil Ivanov wrote:
Hello, I'm trying to switch from Matlab to R-project, and having some difficulties. I make a use of multidimensional matrices. For example, I need to extract mean from one of the dimensions: % we have matrix data of size: 130 x 11 x 350 x 2 data = data - repmat(mean(data,3),[130 1 1 1]); In R project I managed to do that in a very pervarsive way: # mean(data,3) in R base <- apply(data,c(2,3,4),mean) # repmat(...,[130 1 1 1]) base <- rep(base,130) dim(base) <- c(11,2,350,130) base <- aperm(base,c(4,1,2,3)) # data = data - repmat data <- data - base; Could you please show me a more elegant way of doing the same in R :) Thanks, Daniil.
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