Matlab - Cambiar gui con la selección en un Popup menu

function varargout = guide_dinamico(varargin)

gui_Singleton = 1;

gui_State = struct('gui_Name',       mfilename, ...

                   'gui_Singleton',  gui_Singleton, ...

                   'gui_OpeningFcn', @guide_dinamico_OpeningFcn, ...

                   'gui_OutputFcn',  @guide_dinamico_OutputFcn, ...

                   'gui_LayoutFcn',  [] , ...

                   'gui_Callback',   []);

if nargin && ischar(varargin{1})

    gui_State.gui_Callback = str2func(varargin{1});

end

if nargout

    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});

else

    gui_mainfcn(gui_State, varargin{:});

end

function guide_dinamico_OpeningFcn(hObject, eventdata, handles, varargin)

set(handles.popupmenu1,'string',{'circulo','rectangulo','trapecio'});

set(handles.edit1,'string',' ')

set(handles.edit1,'visible','off ')

set(handles.edit2,'string',' ')

set(handles.edit2,'visible','off ')

handles.output = hObject;

guidata(hObject, handles);

function varargout = guide_dinamico_OutputFcn(hObject, eventdata, handles)

varargout{1} = handles.output;

function popupmenu1_Callback(hObject, eventdata, handles)

opcion=get(hObject,'Value');

if opcion==1

    set(handles.edit1,'visible','on')

    set(handles.edit2,'visible','off ')

elseif opcion==2

     set(handles.edit1,'visible','on')

      set(handles.edit2,'visible','on')

end

handles.opcion=opcion;

guidata(hObject, handles);

function popupmenu1_CreateFcn(hObject, eventdata, handles)

function edit1_Callback(hObject, eventdata, handles)

if handles.opcion==1

   radio=str2double(get(handles.edit1,'String'))

end

function edit2_Callback(hObject, eventdata, handles)

if handles.opcion==2

 altura=str2double(get(handles.edit1,'String'))

  base=str2double(get(handles.edit2,'String'))

end