If you want to sum consecutive blocks of elements, no explicit looop is necessary. You can just use the reshape (link) function, then do the summation.
N = 12; % Create Vector Length
A = 1:N; % Create Data
len = 5; % Number OF Elements To Sum In Each Segment
You did not say how you wanted to handle elements that were not part of a segment equal to 5, so here are two possibilities:
mtx = reshape(A(1:len*fix(numel(A)/len)), len, []); % Discard Elements > Multiple Of ‘len’
or:
mtx = reshape([A(:);zeros(len*ceil(numel(A)/len)-numel(A),1)], len, []); % Zero-Pad Elements > Multiple Of ‘len’
then the summation is simply:
s = sum(mtx);
You can put the ‘mtx’ assignments within the sum argument to create a single line of code. I created ‘mtx’ separately for convenience here.
