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Random numbers around y-values

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Hello, I've got a set of y-values. I'd like Matlab to plot random numbers around these y-values (max difference:15%). For you info: y values are given in a .txt file (let's say 100x1). Thx in advance


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Accepted Answer

Ameer Hamza
Ameer Hamza on 6 Jun 2020
Try this
x = 1:100;
y = log(x);
noise = (2*rand(size(y))-1).*0.15.*y;
y_noise = y + noise;
plot(x, y, 'r', x, y_noise, 'b+')


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Ameer Hamza
Ameer Hamza on 7 Jun 2020
I am glad to be of help!
Niklas Kurz
Niklas Kurz on 7 Jun 2020
Just one thing is striking me: if I type x = 1:10 matlab sets all natural numbers between 1:10. What if I want a slower step rate like 0.1 -wise. ?

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