How to use each value of a matrix in certain formula and also save its result

Question

Safi ullah 2017-3-1

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/327453-how-to-use-each-value-of-a-matrix-in-certain-formula-and-also-save-its-result

回答： KSSV 2017-3-1

Hi,I have a matrix having size Y=54×20.I want to use each element (value) of “Y” into the formula Q=(2-squrt(valueofY))./ squrt(valueofY) and save its result.I've tried the following,

P=zeros(54,20);

for j=1:1080;

Q=(2-sqrt(j))./sqrt(j);

P(j,:)=Q;

end

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Answer 1

KSSV 2017-3-1

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/327453-how-to-use-each-value-of-a-matrix-in-certain-formula-and-also-save-its-result#answer_256791

在 MATLAB Online 中打开

Y=rand(54,20);
%%vectorized 
A = (2-(Y.^0.5))./(Y.^0.5) ;
%%using loop
[m,n] = size(Y) ;
B = zeros(m,n) ;
for i = 1:m
    for j = 1:n
        B(i,j) = (2-sqrt(Y(i,j)))/sqrt(Y(i,j));
    end
end