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Accessing Dynamic Properties in Arrays

You cannot reference all the dynamic properties in an object array using a single statement, as you can with ordinary properties. For example, the ObjectArrayDynamic class subclasses the dynamicprops class. 

classdef ObjectArrayDynamic < dynamicprops
   properties
      RegProp
   end
   methods
      function obj = ObjectArrayDynamic
         obj.RegProp = randi(100);
      end
   end
end

You can add dynamic properties to objects of the ObjectArrayDynamic class. Create an object array and add dynamic properties to each member of the array. Define elements 1 and 2 as ObjectArrayDynamic objects:

a(1) = ObjectArrayDynamic;
a(2) = ObjectArrayDynamic;

Add dynamic properties to each object and assign a value.

a(1).addprop('DynoProp');
a(1).DynoProp = 1;
a(2).addprop('DynoProp');
a(2).DynoProp = 2;

Get the values of the ordinary properties, as with any array.

a.RegProp
ans =

     4

ans =

    85

However, MATLAB® returns an error if you try to access the dynamic properties of all array elements using this syntax. 

a.DynoProp

No appropriate method, property, or field 'DynoProp' for class
'ObjectArrayDynamic'.

Refer to each object individually to access dynamic property values:

a(1).DynoProp

ans =

     1
a(2).DynoProp
ans =

     2

For information about classes that can define dynamic properties, see Dynamic Properties — Adding Properties to an Instance .