search for: apltak

...is because I wanted to do some toy problems involving conditioning on multiple variables in a multidimensional joint pmf.) I looked through commands like slice.index and so on, but they seemed to require reshaping and big logical matrix intermediates, which were not memory efficient enough for me. apltake in the magic package was the closest but it only allowed subsetting of contiguous indices from either the first or last element in any given dimension. It was certainly possible to call apltake multiple times to extract arbitrary subarrays via combinations of index intervals for each dimension, an...

Hi, is there a function in R already doing what I try to do below: # Let 'x' be an array with *any* number of dimensions (>=1). x <- array(1:24, dim=c(2,2,3,2)) ... x <- array(1:24, dim=c(4,3,2)) i <- 2:3 ndim <- length(dim(x)) if (ndim == 1) y <- x[i] else if (ndim == 2) y <- x[i,] else if (ndim == 3) y <- x[i,,] else ... and so on. My current