How to add 5% random Noise to the dataset in MATLAB
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Hello Everyone, I hope you are doing well.
I have the dataset attached below. i want to add 5% random Noise to the dataset. How can i do that in matlab
Any help appreciated :)
2 Comments
Jan
on 26 Feb 2022
5% of what? Giving a percentage is a realtive expression. Then you have to define to which value this relation belongs to: 5% of maximum absolute value of the signal, 5% of each current value, 5% standard-deviation of the signal, 5% of the range, ...?
The actual data do not matters, but the definition of what you want to do is important.
Answers (1)
Image Analyst
on 27 Feb 2022
Did you try
s = load('datasetvalue.mat')
dataset = s.dataset;
[rows, columns] = size(dataset)
noise = 0.1 * dataset .* (rand(rows, columns) - 0.5);
noisyData = dataset + noise;
13 Comments
Image Analyst
on 1 Mar 2022
Yes, here is your data. It is not uniform. What is your definition of uniform?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/911090/image.png)
You can make uniformly distributed data with rand, but if you're varying the mean value depending on another value (the pixel value in your data) then it's no longer uniform. You would have to have the mean and stardard deviation of the noise be not dependent on your signal values.
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