How can I add a random error to many elements in a matrix?

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Alex Saoulis 2016-11-26

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评论： Star Strider 2016-11-26

Hi, I have a matrix of values calculated from a polynomial. I also have a Gaussian error function,

r1 = rand();
r2 = rand();
g = sqrt(-2*log(r1))*cos(2*pi*r2)

I would like my function to then calculate and add different values of g to each of the n elements in the matrix. Could anyone point me in the right direction?

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Answer 1

Star Strider 2016-11-26

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https://ww2.mathworks.cn/matlabcentral/answers/314084-how-can-i-add-a-random-error-to-many-elements-in-a-matrix#answer_244781

在 MATLAB Online 中打开

See if this does what you want:

M = randi(9, 3, 4);                                     % Matrix (Integers)
r1 = rand(size(M,1),1);
r2 = rand(1,size(M,2));
g = sqrt(-2*log(r1))*cos(2*pi*r2);
M_With_Noise = M + g;