Code function using Matlab code
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Currently, I am working a project with Matlab progrma. I have one problem with the summation variable. This is due lack of experience before. So, could you help me please to code this function in Matlab code: ( ∑_{ i=1}^{n} (f(x_{i})-y_{i} )^2). Look forward to hearing from you soon.
采纳的回答
Image Analyst
2015-6-7
Like I said in your duplicate question:
theSum = 0;
for i = 1 : n
theSum = theSum + f(x(i) - y(i));
end
where f is your function.
2 个评论
John Gebre
2015-6-7
编辑：Image Analyst
2015-6-7
Image Analyst
2015-6-7
If you want x and y to both be vectors 1,2,3,4,5,....n then just do this:
x = 1:n;
y = 1:n;
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Walter Roberson
2015-6-7
Assuming that your function f is vectorizable, and assuming that x_ and y_ are of length n, then
sum((f(x_)-y_).^2)
if they are a different length then
sum((f(x_(1:n))-y_(1:n)).^2)
If your f is not vectorizable, but (for simplicity) assuming that x_ and y_ are the right length,
sum( (arrayfun(@f, x_) - y_).^2 )
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