findobj fails when searching dynamicprops objects

Greetings and thanks in advance for any suggestions.

I am having a problem using findobj with objects containing dynamic properties. Here's a simple case.

Given this class definition:

classdef myDynamicClass < dynamicprops
   properties
      normalProperty
   end

     methods
        function obj = myDynamicClass(value)
           if nargin > 0
              obj.normalProperty = value;
           end
        end
     end
  end

and some setup code:

v = myDynamicClass(1);
v(2) = myDynamicClass(2);

addprop(v(1), 'dynamicProperty');
v(1).dynamicProperty = 'kPa';

addprop(v(2), 'dynamicProperty');
v(2).dynamicProperty = 'psi';

Now, I can use findobj successfully to search on the normal property

>> findobj(v, 'normalProperty', 2)

ans = 

    myDynamicClass handle

    Properties:
       normalProperty: 2
      dynamicProperty: 'psi'

    Methods, Events, Superclasses

However, when I do the same on the dynamic property, the result is either all or none of the objects passed in:

>> findobj(v, 'dynamicProperty', 'kPa')

ans = 

    2x1 myDynamicClass handle

    Properties:
      normalProperty

    Methods, Events, Superclasses

>> findobj(v, 'dynamicProperty', 'psi')

ans = 

    0x0 empty myDynamicClass handle

    Properties:
      normalProperty

    Methods, Events, Superclasses

What's going on here? Am I doing something wrong? The documentation (section "Finding Objects Having Specific Settings") conveniently doesn't use findobj on dynamic properties in this way.

Answer 1

[Walter Roberson]

I do not know about such things, but the documentation indicates that findprop could be used

findprop(v,'psi')

findprop() is specifically documented as working with dynamic properties. It is not, however, documented as working with object arrays.