function varargout = main(varargin)
% MAIN M-file for main.fig
%      MAIN, by itself, creates a new MAIN or raises the existing
%      singleton*.
%
%      H = MAIN returns the handle to a new MAIN or the handle to
%      the existing singleton*.
%
%      MAIN('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in MAIN.M with the given input arguments.
%
%      MAIN('Property','Value',...) creates a new MAIN or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before main_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to main_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

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

% Last Modified by GUIDE v2.5 17-Jun-2008 23:47:33

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @main_OpeningFcn, ...
                   'gui_OutputFcn',  @main_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 main is made visible.
function main_OpeningFcn(hObject, eventdata, handles, varargin)
% 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 main (see VARARGIN)

% Choose default command line output for main
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = main_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)
name='*.txt';
[Filename,path]=uigetfile(name,'打開標(biāo)準(zhǔn)數(shù)據(jù)文件');        
filename=[path,Filename];                                       
[fid,message]=fopen(filename,'rt');
[data1,count_data1]=fscanf(fid,'%f',inf);
status=fclose(fid);
x=1:count_data1;
plot(x,data1,'r')
set(gca,'Color',[0,0,0],'XColor',[0,1/2,0],'YColor',[0,1/2,0]);
grid on;zoom off;zoom xon;
hold on;

% save data to .mat file
save dataprocess.mat data1 count_data1;

handles.data1 = data1;
handles.count_data1 = count_data1;
guidata(hObject, handles);

% --- Executes on button press in pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles)
% 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)

data1 = handles.data1;
count_data1 = handles.count_data1;

freq = 1024; %采樣頻率
Y1 = fft(data1, count_data1); %快速傅里葉變換
f1 = (0:count_data1-1)*freq/count_data1; %頻域的點(diǎn)數(shù)

figure('Name','Data1 FFT Window','NumberTitle','off');
subplot(2,1,1);
plot(f1,abs(Y1)); %頻譜圖
xlabel('freqency');
ylabel('幅值');
title('頻譜圖')
subplot(2,1,2);
plot(f1,angle(Y1)); %相位譜
xlabel('freqency');
ylabel('相位');
title('相位譜')

function edit1_Callback(hObject, eventdata, 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




% --- Executes on button press in pushbutton5.
function pushbutton5_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)
sensor = handles.data1;
len=size(sensor);
len=len(1,1);
%數(shù)據(jù)的五點(diǎn)三次平滑處理
for a=1:40
sensor(1) = (69 * sensor(1) + 4 * sensor(2) - 6 * sensor(3) + 4 * sensor(4) - 5 * sensor(5)) / 70;
sensor(2) = (2 * sensor(1) + 27 * sensor(2) + 12 * sensor(3) - 8 * sensor(4) + 2 * sensor(5)) / 35;

for i = 3 :(len-2)
      sensor(i) = (-3 * sensor(i - 2) + 12 * sensor(i - 1) + 17 * sensor(i) + 12 * sensor (i + 1) - 3 * sensor(i + 2)) / 35;
end
sensor(len - 1) = (2 * sensor (len - 4) - 8 * sensor (len - 3) + 12 * sensor (len - 2) + 27 * sensor (len - 1) + 2 * sensor (len)) / 35;
sensor (len) = (-1 * sensor (len - 4)+ 4 * sensor (len - 3) - 6 *sensor (len - 2) + 4 * sensor (len - 1) + 69 * sensor (len )) / 70;
end
plot(sensor),grid on;
xlabel('point');ylabel('Voltage(V)');title('截取有用信號(hào)');
zoom xon;
handles.data1 = sensor;
guidata(hObject,handles);



% --- Executes on button press in pushbutton7.
function pushbutton7_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton7 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
sensor = handles.data1;
len=size(sensor);
len=len(1,1);
[x1,y1]=ginput;
[x2,y2]=ginput;
x1=round(x1);
%%%%%%%%%%%%%%%%%%
%x1=1;
%%%%%%%%%%%%%%%%%%%
x2=round(x2);
len=x2-x1+1;
sensor1=sensor(x1:x2)*1;
hold off
plot(sensor1);
grid on;
xlabel('point');ylabel('Voltage(V)');title('截取基線');

%Detrend
[x1,y1]=ginput;
[x2,y2]=ginput;
x1=round(x1);
x2=round(x2);
ave=mean(sensor1(x1:x2));
sensor_Partly=sensor1-ave;
%補(bǔ)零
temp=zeros(50,1);
sensor_Partly=[sensor_Partly;temp];
len=size(sensor_Partly);
len=len(1,1);

handles.data1 = sensor_Partly;
guidata(hObject,handles);


% --- Executes on button press in pushbutton8.
function pushbutton8_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton8 (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 pushbutton9.
function pushbutton9_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton9 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

sensor_Partly = handles.data1;
len=size(sensor_Partly);
len=len(1,1);
%Spectrum before filtered
fre=abs(fft(sensor_Partly,len));
fre=fre/fre(1,1);
f=100000/len*(1:len); %Variable
plot(f,fre);
hold off;
grid on;
xlabel('Frequency(KHz)');
ylabel('Amplitude');
pause;
plot(f(1:round(len/300)),fre(1:round(len/300))); %Variable
grid on;
xlabel('Frequency(KHz)');ylabel('Amplitude');
pause;
title('選擇濾波截止頻率');



% --- Executes on button press in pushbutton10.
function pushbutton10_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton10 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Sampling
sensor_Partly=sensor_Partly(1:100:len); %Variable
%Filter design
[xp,yp]=ginput;
Fstop=xp(1,1);
fm=500; %Variable
fe=Fstop/fm;
f=[0 fe fe 1];
m=[1 1 0 0];
b=fir2(101,f,m); %Variable
sensor_Partly=filtfilt(b,1,sensor_Partly);
%The filter frequency response
[h,w]=freqz(b,1,128);
plot(f*fm,m,w/pi*fm,abs(h));
grid on;
xlabel('Frequency(KHz)');ylabel('Amplitude');title('Frequency Response of The Filter');