CODEWITHSUNDEEP
matlabfor-loop
Eleanor
Eleanor

Reputation: 3

How do I vectorize this for-loop?

I need to vectorize this for loop to speed it up and I'm not sure how to do it.

for k=1:n
  x2=x(k)*x(k);
  y(k) = (1-c1*x(k)+c2*x2-(x(k)/60)*x2)/...
         (1+c3*x(k)+c4*x2);
end

Upvotes: 0

Views: 44

Answers (1)

Sardar Usama
Sardar Usama

Reputation: 19689

Element-wise power (or multiplication) and division is all what you need. I replaced your multiplications of x(k) with itself with exponentials.

y = (1 - c1*x + c2*x.^2 - x.^3/60) ./ (1 + c3*x + c4*x.^2); % assuming n = numel(x)
% if n ≠ numel(x) then replace all 'x's in above line with x(1:n)

Upvotes: 1

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