Graficos con guide en matlab

function varargout = gaff(varargin)
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @gaff_OpeningFcn, ...
'gui_OutputFcn', @gaff_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 gaff_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;

guidata(hObject, handles);

function varargout = gaff_OutputFcn(hObject, eventdata, handles)
varargout{1} = handles.output;


function lista_Callback(hObject, eventdata, handles)
fun=get(handles.lista, 'Value');
switch fun

case 1
fplot('sin(x)',[0 2*pi])

case 2
fplot('cos(x)',[0 2*pi])

case 3
fplot('x^2+3', [0 20])
end
guidata(hObject, handles);

function lista_CreateFcn(hObject, eventdata, handles)
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end