How to run a loop with different values and plot the result?

Hello,

Here is my code,

clear;
clc;
x=5;
Difference=[];
x_arr=[];
x_arr(1)=x;

dt=1;
    
for i=1:10/dt
    
    xnew=x*dt;
   
    x=xnew;

    x_arr(i+1)=xnew;
    
 end
    
Difference=abs(x_arr(1)-x_arr(end))
hold on
plot(dt,Difference,'o')
ylabel('Difference between initial and final x value')
xlabel('dt')

I have an initial x value and I put this x value into a loop, then I create an array. I calculate the difference between the initial x value and the final x value.

What i want to do is run this loop with different dt values (dt=1:1:10) and plot the result. For example,

dt=1 Difference=0

dt=2 Difference=155

dt=3 Difference=130

and so on.

I could do this with starting with my code ten times and use hold on before plotting. I am also including the figure that I got with starting the code by hand 10 times.

With this way I cannot increase the length of dt since I cannot start the code with1000 times.

I want to do this procedure with a loop. How can I do that?

Thank you in advance for your help.

Answer 1

[Alex Mcaulley]

Yo can do it with an external loop with dt:

for dt = 1:10
    x=5;
    x_arr=[];
    x_arr(1)=x;
    for i=1:10/dt

        xnew=x*dt;

        x=xnew;
        x_arr(i+1)=xnew;

    end
    Difference=abs(x_arr(1)-x_arr(end))
    hold on
    plot(dt,Difference,'o')
end
    
hold off
ylabel('Difference between initial and final x value')
xlabel('dt')

[Burcu Yilmaz]

Thank you so much!