R: Efficiently remove singleton dimensions from array

Question

I am looking for a fast way to remove redundant dimensions from an array in R, similar to the squeeze() command in MATLAB. Right now I combine the melt()<

Answer 1

It sounds like you're looking for drop(), which "delete[s] the dimensions of an array which have only one level".

drop(array3d)
#       [,1] [,2]
# [1,]    0    0
# [2,]    0    0