Modern R Programming Cookbook

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You can give a name to each dimension of an array using the optional argument dim names inside the array() function. For example, take a look at the following code snippet:

    column.names <- c("COL1","COL2")    row.names <- c("ROW1","ROW2")    matrix.names <- c("m1","m2", "m3", "m4")    arrayB <- array(1:16, dim=c(2,2,4), dimnames =list(row.names,         column.names, matrix.names))

The dimension of the matrices inside an array should be the same and the data type must be the same as well.

You can also easily change the layout of the array by simply changing the dimension as follows:

    dim(arrayA) <- c(2,4,2)

The multiplication of all dimensions (2 x 4 x 2) should be the same as the total number of elements in the array.