MATLAB: ODE45() & Importing Variables in to Functions Inside It

Question

I am using ode45 on my function; "derivs_func_5". It provides derivatives for ode45.

That function needs to have a value imported in to it "r" before ode45 hits it to provide those derivatives.

This is what the working code looks like:

    [t,coords] = ode45(@derivs_func_5,[t_init t_fin],[x_init y_init v_x_init  
     v_y_init],ode_options);

This is what I am trying to do but matlab is not letting me do:

     r=5;
    [t,coords] = ode45(@derivs_func_5(r),[t_init t_fin],[x_init y_init v_x_init  
     v_y_init],ode_options);

Is there any way to set input variables for a function what appears inside ode45 function?

thanks

Answer 1

http://www.mathworks.com/help/matlab/math/parameterizing-functions.html

[t,coords] = ode45(@(t,y) derivs_func_5(t,y,r), [t_init t_fin],[x_init y_init v_x_init v_y_init], ode_options);