how to call a get.properties method in a script

Hi, I'm trying to use the get.propertie function on a private propertie.

classdef t_point2D

     properties (Access = private)
        X;
        Y; 
    end

    methods
        %Defenir le constructeur
        function point2D = t_point2D(X,Y)

            if nargin == 0
                point2D.X =0;
                point2D.Y=0;
            elseif nargin == 1 || nargin >2
                fprintf('Error');
            else
                point2D.X = X;
                point2D.Y = Y;
            end
        end

        %accesseurs 
        function X = get.X(point2D)
         X = point2D.X;
        end

Then, I try to call it in a script :

 point1 =t_point2D(2,8);
 XX = get.X(point1);

I get the following error message : Undefined variable "get" or class "get.X".

Error in test (line 4) XX = get.X(point1);

I supposed I'm not calling the method the right way? I can't find the doc on how to call a get.prop function.

Answer 1

[Guillaume]

You have two problems:

1. You're using the wrong syntax for accessing properties. Regardless of the syntax used to define the property accessor, the way to access the property is just obj.propname, so:

XX = point1.X

2. The above won't help because the whole point of a private property is that it can't be accessed from outside the class. So if you want access to the X property you need to make it public (at least for GetAccess)

Note: As shown, your accessor function does not enable anything that wasn't already available without it. So if all you do is make X public, you may as well remove that function.

The following may be what you're after:

classdef  Point2D
   properties (GetAccess = public, SetAcces = private)
      X;
      Y;
   end
   methods
      function this = Point2D(X, Y)   %constructeur
         %body of constructor
      end
      %No need for accessor, you can already do Point2D.X
   end
end