How do i set class members by calling its own methods?

I wanted to create a class where i can implement a class and set its members by calling its own methods.

This is the example class here:

classdef MANOVA1
    %MANOVA1 calculate manova1
    %   This class perform ANOVA1 on dataset
    properties (GetAccess = public)
        g;
    end
    properties (Access = private)
        data;
    end
    properties (Dependent)
        Test_statistics;
        p_value;
    end
    methods
        function obj = MANOVA1(filename)
            if nargin == 1
                obj.setData(filename);
            end
            if isempty(obj.g)
                obj.setg();
            end
        end
        function setData(obj, filename)
            obj.data = struct2cell(load(filename));
        end
        function setg(obj, data)
            if (nargin == 1)
                data = obj.data;
            end
            obj.g = length(data);
        end
    end
end

I was trying to call the class to the dataset: problem_5_1 exercise, by this following code:

obs = MANOVA('dataset_problem_5_1.mat')
disp(obs.g)

But when i run this code, the values are empty, because the members inside the class wouln't set when calling from class' own methods. I could do that with C++ and Python.

Answer 1

[Steven Lord]

By default, classes in MATLAB are value classes. See this documentation page for a discussion of the differences between value classes and handle classes. Also see this documentation page for a discussion of how classes in MATLAB behave differently from classes in other object-oriented languages.