gui_signal.m

电子社08年的《精通MATLABG UI设计》一书的所有代码

function varargout = gui_signal(varargin)
%GUI_SIGNAL M-file for gui_signal.fig
%      GUI_SIGNAL, by itself, creates a new GUI_SIGNAL or raises the existing
%      singleton*.
%
%      H = GUI_SIGNAL returns the handle to a new GUI_SIGNAL or the handle to
%      the existing singleton*.
%
%      GUI_SIGNAL('Property','Value',...) creates a new GUI_SIGNAL using the
%      given property value pairs. Unrecognized properties are passed via
%      varargin to gui_signal_OpeningFcn.  This calling syntax produces a
%      warning when there is an existing singleton*.
%
%      GUI_SIGNAL('CALLBACK') and GUI_SIGNAL('CALLBACK',hObject,...) call the
%      local function named CALLBACK in GUI_SIGNAL.M with the given input
%      arguments.
%
%      *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 gui_signal

% Last Modified by GUIDE v2.5 19-Aug-2007 10:39:44

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @gui_signal_OpeningFcn, ...
                   'gui_OutputFcn',  @gui_signal_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 gui_signal is made visible.
function gui_signal_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   unrecognized PropertyName/PropertyValue pairs from the
%            command line (see VARARGIN)




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

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = gui_signal_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;



function f1_input_Callback(hObject, eventdata, handles)
% hObject    handle to f1_input (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 f1_input as text
%        str2double(get(hObject,'String')) returns contents of f1_input as a double



function f2_input_Callback(hObject, eventdata, handles)
% hObject    handle to f2_input (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 f2_input as text
%        str2double(get(hObject,'String')) returns contents of f2_input as a double



function t_input_Callback(hObject, eventdata, handles)
% hObject    handle to t_input (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 t_input as text
%        str2double(get(hObject,'String')) returns contents of t_input as a double


% --- Executes on button press in plot_pushbutton.
function plot_pushbutton_Callback(hObject, eventdata, handles)
% hObject    handle to plot_pushbutton (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% Get user input from GUI
f1 = str2double(get(handles.f1_input,'String'));
f2 = str2double(get(handles.f2_input,'String'));
t = eval(get(handles.t_input,'String'));

% Calculate data
x = sin(2*pi*f1*t) + sin(2*pi*f2*t);
y = fft(x,512);
m = y.*conj(y)/512;
f = 1000*(0:256)/512;
% Create frequency plot
axes(handles.frequency_axes) % Select the proper axes
plot(f,m(1:257))
set(handles.frequency_axes,'XMinorTick','on')
grid on

% Create time plot
axes(handles.time_axes) % Select the proper axes
plot(t,x)
set(handles.time_axes,'XMinorTick','on')
grid on


% --- Executes during object creation, after setting all properties.
function f1_input_CreateFcn(hObject, eventdata, handles)
% hObject    handle to f1_input (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called
set(gcbo,'String','120');
% 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 during object creation, after setting all properties.
function f2_input_CreateFcn(hObject, eventdata, handles)
% hObject    handle to f2_input (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called
set(gcbo,'String','60');
% 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 during object creation, after setting all properties.
function t_input_CreateFcn(hObject, eventdata, handles)
% hObject    handle to t_input (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called
set(gcbo,'String','0:0.001:0.25');
% 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 plot_menu_Callback(hObject, eventdata, handles)
% hObject    handle to plot_menu (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
plot_pushbutton_Callback(hObject, eventdata, handles)

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


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