ex0432.m

使用须知 1. 文件夹 两个文件夹：Mbook和Mfiles。 Mbook文件夹：存放可以用于教学或自学的Mbook形式的文档。 MFiles文件夹：存放所有例题的M文件

function varargout = Ex0429(varargin)
%使用控件设计用户界面
% EX0429 Application M-file for Ex0429.fig
%    FIG = EX0429 launch Ex0429 GUI.
%    EX0429('callback_name', ...) invoke the named callback.

% Last Modified by GUIDE v2.0 23-Jul-2003 10:38:52

if nargin == 0  % LAUNCH GUI

	fig = openfig(mfilename,'reuse');

	% Use system color scheme for figure:
	set(fig,'Color',get(0,'defaultUicontrolBackgroundColor'));

	% Generate a structure of handles to pass to callbacks, and store it. 
	handles = guihandles(fig);
	guidata(fig, handles);

	if nargout > 0
		varargout{1} = fig;
	end

elseif ischar(varargin{1}) % INVOKE NAMED SUBFUNCTION OR CALLBACK

	try
		if (nargout)
			[varargout{1:nargout}] = feval(varargin{:}); % FEVAL switchyard
		else
			feval(varargin{:}); % FEVAL switchyard
		end
	catch
		disp(lasterr);
	end

end


%| ABOUT CALLBACKS:
%| GUIDE automatically appends subfunction prototypes to this file, and 
%| sets objects' callback properties to call them through the FEVAL 
%| switchyard above. This comment describes that mechanism.
%|
%| Each callback subfunction declaration has the following form:
%| <SUBFUNCTION_NAME>(H, EVENTDATA, HANDLES, VARARGIN)
%|
%| The subfunction name is composed using the object's Tag and the 
%| callback type separated by '_', e.g. 'slider2_Callback',
%| 'figure1_CloseRequestFcn', 'axis1_ButtondownFcn'.
%|
%| H is the callback object's handle (obtained using GCBO).
%|
%| EVENTDATA is empty, but reserved for future use.
%|
%| HANDLES is a structure containing handles of components in GUI using
%| tags as fieldnames, e.g. handles.figure1, handles.slider2. This
%| structure is created at GUI startup using GUIHANDLES and stored in
%| the figure's application data using GUIDATA. A copy of the structure
%| is passed to each callback.  You can store additional information in
%| this structure at GUI startup, and you can change the structure
%| during callbacks.  Call guidata(h, handles) after changing your
%| copy to replace the stored original so that subsequent callbacks see
%| the updates. Type "help guihandles" and "help guidata" for more
%| information.
%|
%| VARARGIN contains any extra arguments you have passed to the
%| callback. Specify the extra arguments by editing the callback
%| property in the inspector. By default, GUIDE sets the property to:
%| <MFILENAME>('<SUBFUNCTION_NAME>', gcbo, [], guidata(gcbo))
%| Add any extra arguments after the last argument, before the final
%| closing parenthesis.

    
% --------------------------------------------------------------------
function varargout = pushbutton_red_Callback(h, eventdata, handles, varargin)
x=0:0.1:20;
zeta=handles.data
y=1-1/sqrt(1-zeta^2)*exp(-zeta*x).*sin(sqrt(1-zeta^2)*x+acos(zeta));
plot(x,y,'r')

% --------------------------------------------------------------------
function varargout = pushbutton_blue_Callback(h, eventdata, handles, varargin)
x=0:0.1:20;
zeta=handles.data
y=1-1/sqrt(1-zeta^2)*exp(-zeta*x).*sin(sqrt(1-zeta^2)*x+acos(zeta));
plot(x,y,'b')

% --------------------------------------------------------------------
function varargout = popupmenu_zeta_Callback(h, eventdata, handles, varargin)
val=get(h,'value')
switch val
case 1
    handles.data=0
case 2
    handles.data=0.3
case 3
    handles.data=0.5
case 4
    handles.data=0.707
end
guidata(h,handles)