undefined function or variable in class

Question

How to output class property so that it can be accessed in MATLAB's terminal? In my case, ClassA stores p array and shows output like:

 ClassA with properties:

    p: [3x3 double]

But when I want to access the array, its always says undefined function or variable. Although its public.

My Code:

classdef Input
    properties
        p
    end
    methods
        function obj = Input()
            [obj.p] = input('Enter array like [a b c; d e f;]');
        end
    end
end

Please use proper Indented code (Press ctrl+I in your matlab editor), it's easier to read. — Daniel, Apr 18 '14 at 21:10

score 1 · Accepted Answer · answered Apr 18 '14 at 21:54

1

You probably need to clear all instances of Input classes and rehash your path to update the definition of the class.

I get:

>> myIn = Input;
Enter array like [a b c; d e f;][1 2 3; 4 5 6]
>> myIn
myIn = 
  Input with properties:

    p: [2x3 double]
>> myIn.p
ans =
     1     2     3
     4     5     6

answered Apr 18 '14 at 21:54

chappjc

30,359
6
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U r very true, please tell me is there any other way like some Property Access Method to make this default, like I jist Enter `p` in my case and it shows value. ? – Apr 18 '14 at 21:59
I need so because i'm also working with dynamic variables using `eval` and in your case, it couldn't access that. I need a method which is public and automatically stores in terminal variables. – Apr 18 '14 at 22:01
1

I'm not sure I understand fully, but you can just set a default in `properties` (`p = [1 2 3; 4 5 6];`) and put logic in the constructor to reject the input if nothing (just Enter) is received (`xx = input('Enter array like [a b c; d e f;]'); if ~isempty(xx), obj.p = xx; end`) – chappjc Apr 18 '14 at 22:03
@AhsanAli I'm not sure if you got what you needed out of my last comment, but I'm glad you accepted the answer. If it's helpful, upvotes are also appreciated. Thanks! :) – chappjc Apr 24 '14 at 23:39
Yeah it is useful, and i'm totally satisfied with that. :) – Apr 24 '14 at 23:42

score 0 · Answer 2 · answered Apr 18 '14 at 21:15

0

When you are using input, you have to enter valid matlab code. Your command asks for a input like [a b c; d e f;], but the variables a-f are unknown. If you are intending to create a char array, use ['abc';'def']

answered Apr 18 '14 at 21:15

Daniel

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No, I'm not intending to create char array, I want double data type values, What should I do in that case? – Apr 18 '14 at 21:22

undefined function or variable in class

2 Answers2