simpsons_gui(varargin)

function varargout = simpsons_gui(varargin)
% SIMPSONS_GUI M-file for simpsons_gui.fig
%      SIMPSONS_GUI, by itself, creates a new SIMPSONS_GUI or raises the existing
%      singleton*.
%
%      H = SIMPSONS_GUI returns the handle to a new SIMPSONS_GUI or the handle to
%      the existing singleton*.
%
%      SIMPSONS_GUI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in SIMPSONS_GUI.M with the given input arguments.
%
%      SIMPSONS_GUI('Property','Value',...) creates a new SIMPSONS_GUI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before simpsons_gui_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to simpsons_gui_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Copyright 2002-2003 The MathWorks, Inc.

% Edit the above text to modify the response to help simpsons_gui

% Last Modified by GUIDE v2.5 22-Dec-2006 10:27:33

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @simpsons_gui_OpeningFcn, ...
                   'gui_OutputFcn',  @simpsons_gui_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
% End initialization code - DO NOT EDIT

% --- Executes just before simpsons_gui is made visible.
function simpsons_gui_OpeningFcn(hObject, eventdata, handles, varargin)
cla reset;
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to simpsons_gui (see VARARGIN)

% Choose default command line output for simpsons_gui
handles.output = hObject;
handles.output = hObject;
handles.edit1 = 0;
handles.edit2 = 0;
handles.edit3 = 0;
handles.edit4 = 0;
handles.text1 = 0;

% Update handles structure
guidata(hObject, handles);

% This sets up the initial plot - only do when we are invisible
% so window can get raised using simpsons_gui.
if strcmp(get(hObject,'Visible'),'off')
    plot(rand(5));
end

% UIWAIT makes simpsons_gui wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = simpsons_gui_OutputFcn(hObject, eventdata, handles)
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
axes(handles.axes1);
cla;

popup_sel_index = get(handles.popupmenu1, 'Value');
switch popup_sel_index
    case 1
        plot(rand(5));
    case 2
        plot(sin(1:0.01:25.99));
    case 3
        bar(1:.5:10);
    case 4
        plot(membrane);
    case 5
        surf(peaks);
end


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


% --------------------------------------------------------------------
function OpenMenuItem_Callback(hObject, eventdata, handles)
% hObject    handle to OpenMenuItem (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
file = uigetfile('*.fig');
if ~isequal(file, 0)
    open(file);
end

% --------------------------------------------------------------------
function PrintMenuItem_Callback(hObject, eventdata, handles)
% hObject    handle to PrintMenuItem (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
printdlg(handles.figure1)

% --------------------------------------------------------------------
function CloseMenuItem_Callback(hObject, eventdata, handles)
% hObject    handle to CloseMenuItem (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
selection = questdlg(['Close ' get(handles.figure1,'Name') '?'],...
                     ['Close ' get(handles.figure1,'Name') '...'],...
                     'Yes','No','Yes');
if strcmp(selection,'No')
    return;
end

delete(handles.figure1)


% --- Executes on selection change in popupmenu1.
function popupmenu1_Callback(hObject, eventdata, handles)
% hObject    handle to popupmenu1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns popupmenu1 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from popupmenu1


% --- Executes during object creation, after setting all properties.
function popupmenu1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popupmenu1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: popupmenu controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end

set(hObject, 'String', {'plot(rand(5))', 'plot(sin(1:0.01:25))', 'bar(1:.5:10)', 'plot(membrane)', 'surf(peaks)'});



% --- Executes on button press in pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
cla reset;
Hndl = findobj(gcbf,'tag','edit1');
set(Hndl,'Value',0);
Hndl = findobj(gcbf,'tag','edit2');
set(Hndl,'Value',0);
Hndl = findobj(gcbf,'tag','edit3');
set(Hndl,'Value',0);
Hndl=findobj(gcbf,'tag','edit4');
set(Hndl,'Value',0);
Hndl=findobj(gcbf,'tag','text1');
set(Hndl,'Value',0);
handles.edit1 = [ ];
handles.edit2 = [];
handles.edit3 = [];
handles.edit4 = [];
handles.text1 = [];
guidata(hObject,handles);

% 
zero=[ ];
set(handles.text7,'string',zero);
clc;
clear all;
% clear axes;
% % close all;
% % clc;
% % simpsons_gui;
% % hObject    handle to pushbutton4 (see GCBO)
% % eventdata  reserved - to be defined in a future version of MATLAB
% % handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, handles) 
clc;
n=handles.edit4;%n=12;
a=handles.edit2;%a=0;
b=handles.edit3;%b=4;
ff =handles.edit1;%input function
h=(b-a)/n;
x = a + (0:.5:n)*(b-a)/n ;
w = 1+0*x ;
w(2:2:end-1)=2/3 ;
w(3:2:end-2)=1/3 ;
w(1)=1/6 ;
w(end)=1/6 ;
plot(x,eval(ff));
hold on;
Integral = sum( w.*eval(ff)) * (b-a)/n
set(handles.text7,'string',Integral);
% hObject    handle to pushbutton5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in pushbutton6.
function pushbutton6_Callback(hObject, eventdata, handles)
% clc;
% clear all;
% close all;
% clc;
% hObject    handle to pushbutton6 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% hObject    handle to pushbutton4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
a = questdlg('Really quit ?', 'Confirm quit ', 'Yes', 'No','No');
if strcmp(a,'Yes')
    delete(gcbf);
end



function varargout=edit1_Callback(hObject, eventdata, handles, varargin)
% f = get( findobj(hObject,'tag','tagSimpsonFun'),'String');
NewStrVal=get(hObject,'String');
NewVal=NewStrVal;
handles.edit1=NewVal;
guidata(hObject,handles);
% hObject    handle to edit1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit1 as text
%        str2double(get(hObject,'String')) returns contents of edit1 as a double
% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function varargout=edit2_Callback(hObject, eventdata, handles, varargin)
NewStrVal=get(hObject,'String');
NewVal=str2double(NewStrVal);
handles.edit2=NewVal;
guidata(hObject,handles);
% hObject    handle to edit2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit2 as text
%        str2double(get(hObject,'String')) returns contents of edit2 as a double


% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function varargout=edit3_Callback(hObject, eventdata, handles, varargin)
NewStrVal=get(hObject,'String');
NewVal=str2double(NewStrVal);
handles.edit3=NewVal;
guidata(hObject,handles);
% hObject    handle to edit3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit3 as text
%        str2double(get(hObject,'String')) returns contents of edit3 as a double


% --- Executes during object creation, after setting all properties.
function edit3_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function varargout=edit4_Callback(hObject, eventdata, handles, varargin)
NewStrVal=get(hObject,'String');
NewVal=str2double(NewStrVal);
handles.edit4=NewVal;
guidata(hObject,handles);
% hObject    handle to edit4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit4 as text
%        str2double(get(hObject,'String')) returns contents of edit4 as a double


% --- Executes during object creation, after setting all properties.
function edit4_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end
%%%%%%%%%%%%%%%%%%%%%%%%
%Sub function
%%%%%%%%%%%%%%%%%%%%%%%%%
%%function fx = f( x ) %% Place in the file f.m
%
% Note this function works when x is a vector!
% Hence it may be plotted with the basic Matlab
% plot command:-
% x =(0:.1:2) ; plot( x,f(x),r)
%%fx = ( 1 + ( (pi/2)*cos(x*pi/2) ).^2 ).^.5 ;
%fx=handles.edit1;
%fx=cos(x);