Clear Filters
Clear Filters

Adding or subtracting the same number

3 views (last 30 days)
Yi Chuan Xie
Yi Chuan Xie on 31 Oct 2020
Answered: Vladimir Sovkov on 31 Oct 2020
Hi, I have a array, for example, [0 0 0 0 ]
And I want each of them to be randomly adding 0.4 or subtracting 0.4
How do I do that?

Answers (1)

Vladimir Sovkov
Vladimir Sovkov on 31 Oct 2020
n=4; % array length
x=zeros(1,n); % sample array
d=0.4; % value to be added/subtracted
k=rand(1,n); % uniformly random number between 0 and 1
x(k<0.5)=x(k<0.5)-d; % subtraction
x(k>=0.5)=x(k>=0.5)+d; % addition
many other ways are possible


Find more on Creating and Concatenating Matrices in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!