Yes.
I defined my method (method1) as a function file and stored it in a class folder. the method is functional and I don't have any problems using it.
Is it defined as a method of that class, or is it simply a function file inside that class's folder? There's a difference for classes defined in classdef files.
I created another method and within it I want to use x = lsqnonlin(fun,x0,lb,ub) to evaluate method1.
Q =lsqnonlin(@method1, x0,lb,ub). I kept getting an error message:
That's correct. lsqnonlin will call your function with a double precision input, not an instance of your class. If your method is not a Static method, at least one of the inputs must be an instance of the class for MATLAB to even consider calling the class method.
If the method is not Static, you probably want something like:
obj = anInstanceOfTheClassWithMethod1AsAMethod;
Q = lsqnonlin(@(x) method1(obj, x), x0, lb, ub)
This will call the method1 method for the class anInstanceOfTheClassWithMethod1AsAMethod and pass both the object and a double precision array into that method.
If the method is a Static method, you need to call it using the class name.
Q = lsqnonlin(@(x) anInstanceOfTheClassWithMethod1AsAMethod.method1(x), x0, lb, ub) % or
Q = lsqnonlin(@anInstanceOfTheClassWithMethod1AsAMethod.method1, x0, lb, ub)
