Method set don't work

I wrote a simple program to understand how to implement a set method. Here is my code. First the class definition:

classdef Material

    properties
        L
        nz
        dz
    end

methods

    function newMat = Material(L, nz)
        if nargin == 2
            newMat.L = L;
            newMat.nz = nz;
            newMat.dz;
        end
    end

    function dz = get.dz(newMat)
        dz = newMat.L/( newMat.nz - 1);
    end

    function newMat = set.dz(newMat,value)
        newMat.dz = value;
    end

end

end

Then a simple script:

clc; close all; clear all; clear classes;

cm = 1e-02; Mat1 = Material(5*cm,11);

so Mat1.dz is equal to 0.005 But when i want to set Mat1.dz = 0.1, the result remains equal to 0.005. Why the set method doesn't work ?? Thanks in advance for your help

Answer 1

[Lokesh Ravindranathan]

Your code is working correctly. The reason why the set method appears like not working is because the get method is dependent on L and nz. Since the values of L and nz are unchanged, the get method always calculates the value of dz and it remains at 0.005, although the set method is used with different values. Consider modifying your code.

Initialize dz when you create the object and always get the current value of dz for display (no calculations).

classdef Material 

    properties
        L
        nz
        dz
    end
methods

    function newMat = Material(L, nz)
        if nargin == 2
            newMat.L = L;
            newMat.nz = nz;
            newMat.dz = L/(nz-1);
        end
    end
    function dz = get.dz(newMat)
        dz = newMat.dz;
    end
    function newMat = set.dz(newMat,value)
        newMat.dz = value;
    end
end

end

[Thierry NOVO]

Thank you so much Lokesh for your answer. I tried your proposition and it works.