MATLAB: Making a script that will generate a random “walker” that will walk along the x-axis randomly.

helpMATLABrandom walker

Alright, so basically I need to make a "random walker" that walks in either direction using a for loop. It can walk forward one, back one back one forward one, it just has to be random for a thousand times. Then I need to use comet to simulate the walk, and im just not sure how to set up this code. So far I have this. I need to plot the walk as a function of time. I don't know what I'm doing wrong.
    %%Part 1
% Simulation of Walker
t = linspace(0,1001,50000);
x = 0;
d = randn(0,2);
for n = 1:1001
    if d == 0
        x = x;
    elseif d == 1
        x = x + 1;
    else d == 2
        x = x - 1;
    end
end
comet(x,t);

Best Answer

I'll guess:
n = 1000;
x = cumsum([0,-1 + 2*(rand(1,n-1)>0.5)]);
comet(x,0:n-1)
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