Group: | Matrix Manipulation |
Topic: | Sorting and Counting |
See also: | cumprod cumsum mean prod |
Function: | sum | |
Description: | sum computes the sum of the elements of an array regarding a given dimension. |
Usage: | z = sum (x {,j}) | |
Input: | ||
x | d1 x d2 x ... x dn array | |
j | integer (number of dimension, default = 1) | |
Output: | ||
z | d1 x d2 x .. x d(j-1) x 1 x d(j+1) x .. x dn array |
x = #(1, 2)~#(3, 4)~#(5, 6) sum(x,2)
Contents of sum [1,] 9 [2,] 12