Add or subtract 0.1 randomly to all elements of a matix

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Ricardo Gutierrez 2019-8-26

评论： Bruno Luong 2021-4-29

Hi. Good day.

I would like you to help me solve the following:

I have a 3 X 6 matrix

A = [0.36 0.12 0.70 0.32 0.39 0.64

0.07 0.69 0.27 0.06 0.49 0.49

0.70 0.39 0.85 0.75 0.57 0.36]

I would like to add(+) or subtract(-) 0.1 randomly, to each and every one of the elements of matrix A

How can I do it?

Thank you

Bruno Luong 2019-8-26

编辑：Bruno Luong 2019-8-26

A + 0.1*(2*(rand(size(A))>0.5)-1)

A + 0.1*(2*(randi([0,1],size(A)))-1)

Can you also let matlab substract or add a random number between for example 0.1 and 0.3 for every element of the matrix?

Bruno Luong 2021-4-29

Hint for you

0.1 = 0.2 - 0.1
0.3 = 0.2 + 0.1

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