MATLAB: Efficient way to sum the components of a matrix

Question

I have an array of unknown dimensions. I want to sum the values of this array. I need to do this many times. My current code is:

% Determine the number of dimensions in the array. 
m = ndims(x); 
% Assign the value of the array to a temporary working array, 'temp'. 
temp = x; 
% Calculate the total of the working array, 'temp'. 
for i = 1:m
 temp = sum(temp); 
end

I have to do this many many times, and profile viewer is showing the command 'sum' as taking a large portion of time. Is there a more efficient way of doing this, or am I just stuck with this method?

Answer 1

if you are just looking for the total sum of the n dimensional array, then you can just do sum(temp(:));