[R] Collapse an array
bcarvalh at jhsph.edu
Thu Feb 28 21:10:18 CET 2008
dim(X) <- c(prod(dim(X)[1:3]), dim(X))
On Feb 28, 2008, at 3:05 PM, Gang Chen wrote:
> Suppose I have a 4-D array X with dimensions (dx, dy, dz, dp). I want
> to collapse the first 3 dimensions of X to make a 2-D array Y with
> dimensions (dx*dy*dz, dp). Instead of awkward looping, what is a good
> way to do this? Is there a similar function like reshape in Matlab?
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
More information about the R-help