My input method isn't working?

Something is going wrong. Here is the code i'm trying to get to work

 %function dLdt = Lorentz(t,x,y,z)
 %s = 10
 %b = 8/3
 %x = L(1);
 %y = L(2);
 %z = L(3);
 %dx = s*(y - x)
 %dy = r*x - y - x*z
 %dz = x*y - b*z
 %dLdt = zeros(3,2,1);
 %dLdt(1)=dx;
 %dLdt(2)=dy;
 %dLdt(3)=dz;

That is the one .m file i made. The second one is simply

 %[t,x,y,z]=ode45('pro1',0:0.001:1,[1 1 1]);
 %plot3(L(:,1),L(:,2),L(:,3));

Now it says 'Undefined function or method 'L' for input arguments of type 'double'. I'm pretty sure my syntax is completely retarded somewhere. This is why i'm asking you guys :)

pro1 is the .m file

Answer 1

[Image Analyst]

Why do you think L should have any value? Did L come from anywhere? No. It was not passed in through the input argument list, nor is it a global variable, nor did you call getappdata() or assign it or initialize it. So how is L supposed to have any value?

[Andrew Davies]

Well, can you tell me how i should define x y and z then? they're supposed to have initial values (mine were [1 1 1]) and the i'm using ode45 to solve the equations i described

[Image Analyst]

Attach pro1.m so we can try to fix it.

[Andrew Davies]

pro1.m is the first section of code i wrote up

Answer 2

[Marc]

I think you want to define your function Lorentz(t,L).

Also, in your call to Ode45, I think you want to indicate Lorentz as the function and instead of x,y,z in the output, replace with L.

[Andrew Davies]

So now it's saying there aren't enough input arguments