Summing squared elements of a column of a matrix
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for i=1:N
s(i)=sum(V(:,2))/sqrt(n);
t(i)=sum(V(:,2))/sqrt(sum((V(:,i).*V(:,i)));
end
Both s and t are Nx1 vectors, while V is a nxN matrix. In s I summed the elements of each column of V for every element of s. How can I divide, in t, by the square root of the sum of the SQUARED elements of each column of V?
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回答 (1 件)
Star Strider
2019 年 8 月 6 日
It’s not clear what you want to do.
Try this:
V = rand(6,5); % Guess What ‘V’ Is
n = size(V,1);
N = size(V,2);
s = sum(V)/sqrt(n); % Sum Over Columns, Divide By ‘sqrt(n)’
t = sum(V)./sqrt(sum(V.^2,2)); % Sum Over Columns, Divide By ‘sum(sqrt(Rows))’
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