How to sum all the elements of a vector in Matlab and Octave

To calculate the sum of the elements of a vector use the sum() function in Matlab and Octave

sum(v)

The parameter v is a vector.

The function adds the values of the elements of the vector and returns the sum.

Example

Define a vector

>> v=[1 2 3 4]
v =
1 2 3 4

Calculate the sum of the elements of the vector using the sum (v) function

>> sum(v)
ans = 10

The sum of the elements is 10

$$ 1 + 2 + 3 + 4 = 10 $$