Random numbers around y-values

2020 6 5
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更新时间：2020 6 7
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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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Ameer Hamza
Ameer Hamza 2020-6-6

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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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Niklas Kurz
Niklas Kurz 2020-6-7
A Huge thanks to you.
Ameer Hamza
Ameer Hamza 2020-6-7
I am glad to be of help!
Niklas Kurz
Niklas Kurz 2020-6-7
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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