Question

Do we need to create vectors to create arrays in R?

Answer 1

Yes, you need vectors to create arrays. Arrays take vectors in the form of input and use the values in the dim parameter for creating an array.

array(x, dim) where x is a vector.

> array(c(1:10),c(3,3))
     [,1] [,2] [,3]
[1,]    1    4    7
[2,]    2    5    8
[3,]    3    6    9