Add gaussian distributed noise with mean and variance to matrix
80 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
monkey_matlab
le 5 Nov 2015
Commenté : Muhammad Yasir
le 14 Juil 2021
Hello,
I've seen that to add gaussian distributed noise to a matrix A with mean 0 and var = 5, this is the code
A_wnoise = A + 5*randn(size(A))
Now, how do you add noise with mean 5 and var = 5 to the matrix A? Thanks.
0 commentaires
Réponse acceptée
Image Analyst
le 5 Nov 2015
A_wnoise = A + 5*randn(size(A)) + 5;
4 commentaires
Deryk Smith
le 13 Août 2020
What if your variance is supposed to be (0:0.1:10)? the code does not work then.
Image Analyst
le 14 Août 2020
Variance can't be an array. However you can put one variance into randn() and put it into a loop over all variances to get a family of arrays.
Plus de réponses (1)
Muhammad Yasir
le 12 Juil 2021
How can I generate a noise sequence w_t, which is i.i.d. Gaussian of mean zero with variance 2I3 (2xI3 ,where I3 is identity matrix of dimension 3x3) and the initial condition is x_init = [10 10 −10]'
6 commentaires
Muhammad Yasir
le 14 Juil 2021
Sorry, I could post it immediately. I have posted this question as per your advice. Here is the link to my Query:
https://uk.mathworks.com/matlabcentral/answers/878528-how-to-generate-iid-gaussian-noise-vector
Voir également
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!