Error invalid handle after PLOT when I change ratiobutton

When I change of ratiobutton after PLOT I receive this error:

??? Error using ==> set
Invalid handle

Error in ==> Directividad>Eje_abscisas_SelectionChangeFcn at 176
set([handles.edit_b1 handles.edit_a handles.edit_p1 handles.text1 handles.text2
handles.text3],'Visible','on');

Error in ==> gui_mainfcn at 96
        feval(varargin{:});

Error in ==> Directividad at 17
    gui_mainfcn(gui_State, varargin{:});

Error in ==>
@(hObject,eventdata)Directividad('Eje_abscisas_SelectionChangeFcn',get(hObject,'SelectedObject'),eventdata,guidata(get(hObject,'SelectedObject')))

Error in ==> hgfeval at 63
        feval(fcn{1},varargin{:},fcn{2:end});

Error in ==> uitools.uibuttongroup.childAddedCbk>manageButtons at 80
    hgfeval(cbk, source, evdata);

??? Error while evaluating uicontrol Callback

I think the problem is one of this functions.

Functions of buttongroup and ratiobuttons:

function Eje_abscisas_SelectionChangeFcn(hObject, eventdata, handles)

set([handles.edit_b1 handles.edit_a handles.edit_p1 handles.text1 handles.text2 handles.text3],'Visible','on');
global SELECCION;
handles.edit_a
switch get(eventdata.NewValue,'Tag')
    case 'button_a'
        set(handles.edit_a,'Visible','off');
        set(handles.text1,'Visible','off');
        SELECCION=1;

      case 'button_b1'
          set(handles.edit_b1,'Visible','off');
          set(handles.text2,'Visible','off');
          SELECCION=2;

      case 'button_p1'
          set(handles.edit_p1,'Visible','off');
          set(handles.text3,'Visible','off');
          SELECCION=3;
  end

Function of pushbutton:

function PLOT_Callback(hObject, eventdata, handles)

global SELECCION;

if SELECCION == 1
    p1=handles.edit_p1;
    b1=handles.edit_b1;
    mx = handles.mx;
    a = linspace(0,mx,1000);
    termino_Fresnel = b1./(sqrt(2*p1));
    C = mfun('FresnelC',termino_Fresnel);
    S = mfun('FresnelS',termino_Fresnel);
    directividad = ((64.*a.*p1)./(pi.*b1)).*(C.^2+S.^2);
    axes(handles.axes1);
    handles.x=a;
    handles.h=plot(a,directividad);    
elseif SELECCION == 2
    p1=handles.edit_p1;
    mx=handles.mx;
    a=handles.edit_a;
    b1 = linspace(0,mx,1000);
    termino_Fresnel = b1./(sqrt(2*p1));
    C = mfun('FresnelC',termino_Fresnel);
    S = mfun('FresnelS',termino_Fresnel);
    directividad = ((64.*a.*p1)./(pi.*b1)).*(C.^2+S.^2);
    axes(handles.axes1);
    handles.x=b1;
    handles.h=plot(b1,directividad);     
elseif SELECCION == 3
    mx=handles.mx;
    p1=linspace(0,mx,1000);
    a=handles.edit_a;
    b1 = handles.edit_b1;
    termino_Fresnel = b1./(sqrt(2*p1));
    C = mfun('FresnelC',termino_Fresnel);
    S = mfun('FresnelS',termino_Fresnel);
    directividad = ((64.*a.*p1)./(pi.*b1)).*(C.^2+S.^2);
    axes(handles.axes1);
    handles.x=p1;
    handles.h=plot(p1,directividad);   
end

The source code and and .fig file is upload on:

http://www.mediafire.com/?6h947xorewdhaci

Please, Can anyone help me? Thank you, Luis

Answer 1

[Paulo Silva]

You forgot to update the handles structure in the plot_callback, add the code in the end of the plot_callback:

guidata(hObject,handles);

It takes time to draw the graph so you should consider adding a waitbar or just disable (or hide) the plot button after someone press until the graph is drawn.