random number of two random varibles.
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i have 2 random varibles, w and T. they both a ranom varibles of 2 varibles a density function ( f(,w,T)).
is there a way to create a number like rand for this case? i have 2 cases:
where w and T are both uniform disturbiution and where they both gaussian (and might have corelation)
Thank you
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Risposte (2)
Image Analyst
il 28 Apr 2021
Did you see the rand() and randn() functions?
w = rand(1, 10000);
T = rand(1, 10000);
w = theMean + stDev * randn(1, 1000);
T = theMean + stDev * randn(1, 1000);
Adapt as needed.
Not sure how to correlate the w with T, but there's probably an option or function for doing that.
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Bruno Luong
il 28 Apr 2021
Modificato: Bruno Luong
il 28 Apr 2021
If K is the (2 x 2) covariariance matrix of (w,T) and mu (2 x 1) is the mean of (w,T), you can generate them like this
n = 1000; % number of samples
L = chol(K);
X = mu + L'*randn(2,n);
w = X(1,:)
T = X(2,:)
1 Commento
Jeff Miller
il 28 Apr 2021
This is for the case of two normals. For the case of two correlated uniforms, you could adapt the method given in response to this question.
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