How to change order of array dimensions

Question

How do I reorder the dimensions of an n dimensional array. For example, if I have a three dimensional array of sales data, where the first dimension represents the Date, th

Answer 1

The function for doing that is aperm, from the base package. It is a generalization of the transpose t() function to multidimensional arrays. For your example, you would call it as follows:

new.data <- aperm(old.data, c(2,3,1))