MATLAB: Continuous and repetitive gaussian random function in matlab

continuous random functionMATLAB

I want to create a random rough surface profile as input form my method. I can able to create random variation in numbers using randn function but each time i simulate i get different input data which changes output. If it is possible to store and use the data or to generate a continuous function of random data which can be repetative if done simulaion that would be helpful

Best Answer

If i understood you correctly, you want to get the same random values every time you run your code. This is reached by the rng function.
rand(1,10)
ans =
    0.4387    0.3816    0.7655    0.7952    0.1869    0.4898    0.4456    0.6463    0.7094    0.7547
s = rng
s = 
  struct with fields:
     Type: 'twister'
     Seed: 0
    State: [625×1 uint32]
rng(s)
rand(1,10)
ans =
    0.2760    0.6797    0.6551    0.1626    0.1190    0.4984    0.9597    0.3404    0.5853    0.2238
rng(s)
rand(1,10)
ans =
    0.2760    0.6797    0.6551    0.1626    0.1190    0.4984    0.9597    0.3404    0.5853    0.2238
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