Can MATLAB apply a function to an array of objects

Question

I have an array of objects, all of the same class. Is it possible to apply a function (defined in the methods section in the class) to all the objects in the array at once? for example, the class definition is:

classdef myClass
        properties
            x=0;
        end

        methods
            function obj=plus1(obj)
                obj.x=obj.x+1;
            end
        end

    end

Now I can create an object A of class myClass:

A=myClass;

and apply the method plus1:

A=A.plus1;

However, if I create an array of objects of the same class:

A(1,10)=myClass;

is it possible to apply 'plus1' to the 10 objects of A at once?

something like:

A(:)=A(:).plus1;

Thanks guys :)

Shai · Accepted Answer · 2013-03-17 15:50:16Z

1

You may use arrayfun

>> A = arrayfun( @(x) x.plus1, A );

answered Mar 17, 2013 at 15:50

Shai

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Comments

Jonas · Accepted Answer · 2013-03-17 16:10:26Z

1

As long as the method plus1 is defined for arrays of objects, it will work:

    methods
        function obj=plus1(objList)
            for obj = objList(:)'
               obj.x=obj.x+1;
            end
        end
    end

Now you can call A = plus1(A) or A=A.plus1 even if A is an array of objects.

answered Mar 17, 2013 at 16:10

Jonas

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1 Comment

Andrew Janke Over a year ago

I'm not sure this quite works; I think some values may get mis-assigned. Noted in the chat: chat.stackoverflow.com/rooms/26329/…

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