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Running same program is giving different plot

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Heya :)
Heya :) on 17 Oct 2020
Edited: Heya :) on 18 Oct 2020
Everytime I run a program I get different plot for error. Why is that? How to resolve this issue? Please help
clear all; close all; clc;
%value of constants
a=0.1;
omega=5;
dt=0.01; %step size
x(1)=1;
y(1)=1;
for i=2:1000
x(i)=x(i-1)+((a-x(i-1)^2-y(i-1)^2)*x(i-1)-omega*y(i-1))*dt;
y(i)=y(i-1)+((a-x(i-1)^2-y(i-1)^2)*y(i-1)+omega*x(i-1))*dt;
end
index=randi([2,999],1,N_m);

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Rafael Hernandez-Walls
Rafael Hernandez-Walls on 17 Oct 2020
maybe it's because you're using this command: index=randi([2,999],1,N_m);

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Accepted Answer

Rik
Rik on 17 Oct 2020
Clear all should only exist exactly once in your entire code base. Replace it with clear or clearvars.
If you want to have repeatable code with randomness you will have to set the random seed. You can use the rng function to do so.

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