MATLAB: How to create a vector with the different sum of two elements of another vector

sum

v = [1, 2, 3, 4, 6, 8];
l = length(v)
for i = 1 : 2 : l (?)
    som = sum + v(i);
end
I don't know how to increse 'i' to create the sum of the two elements of the vector, the solution will be: som = [3, 7, 14]

Best Answer

No need to use a loop, some simple indexing works perfectly:
>> v = [1,2,3,4,6,8];
>> v(1:2:end)+v(2:2:end)
ans =
    3    7   14
or generalized slightly:
>> sum(reshape(v,2,[]),1)
ans =
    3    7   14
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