how to write callback for check box

hi how to write code to remove plot by unchecking check box.

function checkbox1_Callback(hObject, eventdata, handles)
% hObject    handle to checkbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of checkbox1
data=get(handles.uitable1,'data');

plot(data(:,1),data(:,2));

as per above callback i am able to plot when checkbox is checked, please guide me how to write code for unchecking checkbox so that plot gets deleted

Answer 1

if get(hObject, 'Value')
  handles.plot = plot(data(:,1),data(:,2));
else
  delete(handles.plot);
  handles.plot = [];
end
guidata(hObject, handles);

Answer 2

thanks for reply walter.it was very helpful.actually i have 3 plots in my code .when 3 plots are displayed in figure i want to select one plot and zoom in x and y direction.can you guide me how to proceed further .

function checkbox1_Callback(hObject, eventdata, handles)
% hObject    handle to checkbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)
% Hint: get(hObject,'Value') returns toggle state of checkbox1
data=get(handles.uitable1,'data');
if get(hObject, 'Value') 
handles.plot1 = plot(data(:,1),data(:,2));
else  delete(handles.plot1);
handles.plot1 = [];
endguidata(hObject, handles);
% --- Executes on button press in checkbox2.function checkbox2_Callback(hObject, eventdata, handles)
% hObject    handle to checkbox2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA) 
% Hint: get(hObject,'Value') returns toggle state of checkbox2 
data=get(handles.uitable1,'data');
if get(hObject, 'Value') 
handles.plot2 = plot(data(:,1),data(:,3));
else  delete(handles.plot2); 
handles.plot2 = [];
endguidata(hObject, handles);
% --- Executes on button press in checkbox3.
function checkbox3_Callback(hObject, eventdata, handles)
% hObject    handle to checkbox3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% Hint: get(hObject,'Value') returns toggle state of checkbox3
data=get(handles.uitable1,'data');
if get(hObject, 'Value') 
handles.plot3 = plot(data(:,1),data(:,4));
else 
delete(handles.plot3); 
handles.plot3 = [];endguidata(hObject, handles);

Please learn how to format code.