Matlab - graficar en un axis de una gui

function varargout = popumenu2_case(varargin)

gui_Singleton = 1;

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

                   'gui_Singleton',  gui_Singleton, ...

                   'gui_OpeningFcn', @popumenu2_case_OpeningFcn, ...

                   'gui_OutputFcn',  @popumenu2_case_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 popumenu2_case_OpeningFcn(hObject, eventdata, handles, varargin)

handles.output = hObject;

guidata(hObject, handles);

function varargout = popumenu2_case_OutputFcn(hObject, eventdata, handles)

varargout{1} = handles.output;

function edit1_Callback(hObject, eventdata, handles)

num= str2num(get(hObject,'String'));

handles.num=num;

guidata(hObject, handles);

function popupmenu1_Callback(hObject, eventdata, handles)

%x=sort(10*rand(1,100));

h=get(hObject,'Value');

x=handles.num;

switch h

 case 2

    axes(handles.axes1)

    hist(x)

 case 3

    axes(handles.axes1)

    boxplot(x);

end

 guidata(hObject, handles);