starting with oop

Question

Christof 2011-12-1

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https://ww2.mathworks.cn/matlabcentral/answers/22776-starting-with-oop

Hi, I just started playing with oop in Matlab. Dont have any other oop experience, so I seem to get lost in the first steps alerady. when I try to call teh following class

classdef myclass
  %MYCLASS Summary of this class goes here
  %   Detailed explanation goes here
    properties
       t1
    end
    methods
        function obj=myclass(arg1)
           obj.t1=myclass.p(arg1); 
        end
    end
    methods (Static)
        function p = pi(tol)
            [n d]=rat(pi,tol);
            p=n/d;
        end
    end
end

I always get the error

The class myclass has no property or method named 'p'.

How can I prevent that error?

Cheers

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Answer 1

David Young 2011-12-1

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在 MATLAB Online 中打开

You need to replace

obj.t1=myclass.p(arg1);

with

obj.t1=myclass.pi(arg1);

You're making the (I suspect quite common) mistake of using the output variable name from the function instead of the name of the function itself.

If you make that change, the constructor runs:

>> m = myclass(3)
m = 
    myclass
    Properties:
      t1: 3

Does that do what you expect now?

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Christof 2011-12-1

that was the mistake. thanks.

another question, though. if I define the method as a regular method, not as a static method, I cant call it from the constructor. is there a way to do?

David Young 2011-12-1