Get the indices using expand.grid and then reorder them: set.seed(1); X <- array(rnorm(24), 2:4) # input X # look at X
do.call(expand.grid, sapply(dim(X), seq))[order(X),] On 8/16/07, Ana Conesa <[EMAIL PROTECTED]> wrote: > Dear list, > > I am looking for a function/way to get the array coordinates of given > elements in an array. What I mean is the following: > - Let X be a 3D array > - I find the ordering of the elements of X by ord <- order(X) (this > returns me a vector) > - I now want to find the x,y,z coordinates of each element of ord > > Can anyone help me? > > Thanks! > > Ana > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
