MATLAB: Generating a 1D random walk

1d random walkMATLAB

Hi,
How would you go by generating a 1D walk from a starting position of y = 0 and that takes a step of either +1 or -1 with equal probability when N = 1000?

Best Answer

N = 1000 ; 
W = [-1 1] ; 
RW = zeros(N,1) ; 
RW(1) = W(randperm(2,1)) ; 
for i = 2:N
  RW(i) = RW(i-1)+W(randperm(2,1)) ; 
end
plot(RW)
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