Thinh

This work is undergoing construction, it is inevitable that there are some (or a lot of) errors in it, thanks for letting me know, I will try and work on it ^^.

BLOC
Operands to the || and && operators
must be convertible to logical scalar
values.

Error in UMLpanel/getinfo (line 196)
if B{i} ~= 0 &&
~isempty(B{i})

Error in
UMLcreator>@(h,d)obj.Panel.getinfo
(line 40)
'position', [20 10 90
60],'tag','Open','string','Open','callback',@(h,d)obj.Panel.getinfo);
Error while evaluating uicontrol Callback

Undefined variable or function
nodeList might refer to the function
nodelist.

Error in UMLpanel/gettier (line 22)
bottomnode = nodeList(bottomind);

Error in UMLpanel/runUML (line 16)
gettier(obj);

Error in
UMLcreator>@(h,d)obj.Panel.runUML
(line 43)
'tag','Start','string','Start','callback',@(h,d)obj.Panel.runUML);
Error while evaluating uicontrol Callback

very interesting work...but as you are in development, it seems not to be robust enough.
my feeback :

I have the same bug of Tarek. I have tried to modify your code by putting some piece of code :
compos1 = Compos(TipPos,TailPos);
patch(compos1.Shape{1},compos1.Shape{2},'k');
%create tirangles and diamonds
patch(compos1.Shape{3},compos1.Shape{4},'k');
inside one of your for block (at line 206).

After that I had another bug :

??? Subscript indices must either be real positive integers or logicals.

Error in ==> UMLpanel.getinfo at 942
ischildof{ind{i}(j)}(end+1) = clssnmpar{i};

then I just add a test on the value return by ind{i}(j)