For loop for summation

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Emma
Emma 2019-10-17
编辑： Matt J 2019-10-18
I need to create a for loop for a series summation. The sum is from n=-500 to 500. The summation is some function of n multiplied by y^-n. The problem that I am running into is that y is a matrix that needs to be indexed over. Currently, I have something along the lines of
R= zeros(size(y));
N= -500:500;
for m=1:numel(y)
R(m) = R(m) + f(N)*y(m)^(-N)
end
But am running into problems because N is not the same size as y.

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采纳的回答

Matt J
Matt J 2019-10-18
编辑：Matt J 2019-10-18
R= zeros(size(y));
N= -500:500;
for j=1:numel(N)
n=N(j);
R = R + f(n).*y.^(-n);
end

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