Making a script that will generate a random "walker" that will walk along the x-axis randomly.

15 views (last 30 days)
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);
  1 Comment
John D'Errico
John D'Errico on 4 Nov 2018
You described a random walk that moves EITHER FORWARD OR BACKWARDS. But your code seems to allow for staying in the same spot too at any step.
Which is it? You need to choose one.

Sign in to comment.

Accepted Answer

John D'Errico
John D'Errico on 4 Nov 2018
I'll guess:
n = 1000;
x = cumsum([0,-1 + 2*(rand(1,n-1)>0.5)]);
comet(x,0:n-1)

More Answers (1)

Image Analyst
Image Analyst on 9 Aug 2022

Products


Release

R2018a

Community Treasure Hunt

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

Start Hunting!