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PHPExcel常用方法汇总(转载)
guidata用来保存handles结构,可以做为窗口间参数的传递。
>> help guidata
GUIDATA Store or retrieve application data.
GUIDATA(H, DATA) stores the specified data in the figure's
application data.
H is a handle that identifies the figure - it can be the figure
itself, or any object contained in the figure.
DATA can be anything an application wishes to store for later
retrieval.
DATA = GUIDATA(H) returns previously stored data, or an empty
matrix if nothing was previously stored.
GUIDATA provides application authors with a convenient interface
to a figure's application data. You can access the data from a
callback subfunction using the component's handle, without needing
to find the figure's handle. You can also avoid having to create
and maintain a hardcoded property name for the application data
throughout your source code. GUIDATA is particularly useful in
conjunction with GUIHANDLES, which returns a structure containing
handles of all the components in a GUI listed by tag.
Example:
Suppose an application creates a figure with handle F, containing
a slider and an editable text uicontrol whose tags are
'valueSlider' and 'valueEdit' respectively. The following
excerpts from the application's M-file illustrate the use of
GUIDATA to access a structure containing handles returned by
GUIHANDLES, plus additional application-specific data added during
initialization and callbacks:
... excerpt from the GUI setup code ...
f = openfig('mygui.fig');
data = guihandles(f); % initialize it to contain handles
data.errorString = 'Total number of mistakes: ';
data.numberOfErrors = 0;
guidata(f, data); % store the structure
... excerpt from the slider's callback ...
data = guidata(gcbo); % get the struct, use the handles:
set(data.valueEdit, 'String',...
num2str(get(data.valueSlider, 'Value')));
... excerpt from the edit's callback ...
data = guidata(gcbo); % need handles, may need error info
val = str2double(get(data.valueEdit,'String'));
if isnumeric(val) & length(val)==1 & ...
val >= get(data.valueSlider, 'Min') & ...
val <= get(data.valueSlider, 'Max')
set(data.valueSlider, 'Value', val);
else
% increment the error count, and display it
data.numberOfErrors = data.numberOfErrors + 1;
set(handles.valueEdit, 'String',...
[ data.errorString, num2str(data.numberOfErrors) ]);
guidata(gcbo, data); % store the changes...
end
Note that GUIDE generates callback functions to which a structure
of handles is passed automatically as an input argument. This
eliminates the need to call "data = guidata(gcbo);" in callbacks
written using GUIDE, unlike the example above.
以一个简单的一元二次方程求解为例
先看看自动 生成的M代码
function varargout = test1(varargin) % TEST1 M-file for test1.fig % TEST1, by itself, creates a new TEST1 or raises the existing % singleton*. % % H = TEST1 returns the handle to a new TEST1 or the handle to % the existing singleton*. % % TEST1('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in TEST1.M with the given input arguments. % % TEST1('Property','Value',...) creates a new TEST1 or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before test1_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to test1_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 test1 % Last Modified by GUIDE v2.5 04-Oct-2012 17:21:13 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @test1_OpeningFcn, ... 'gui_OutputFcn', @test1_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 test1 is made visible. function test1_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 test1 (see VARARGIN) % Choose default command line output for test1 handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes test1 wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = test1_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 btn_draw. function btn_draw_Callback(hObject, eventdata, handles) % hObject handle to btn_draw (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) function a_num_Callback(hObject, eventdata, handles) % hObject handle to a_num (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 a_num as text % str2double(get(hObject,'String')) returns contents of a_num as a double % --- Executes during object creation, after setting all properties. function a_num_CreateFcn(hObject, eventdata, handles) % hObject handle to a_num (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 b_num_Callback(hObject, eventdata, handles) % hObject handle to b_num (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 b_num as text % str2double(get(hObject,'String')) returns contents of b_num as a double % --- Executes during object creation, after setting all properties. function b_num_CreateFcn(hObject, eventdata, handles) % hObject handle to b_num (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 c_num_Callback(hObject, eventdata, handles) % hObject handle to c_num (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 c_num as text % str2double(get(hObject,'String')) returns contents of c_num as a double % --- Executes during object creation, after setting all properties. function c_num_CreateFcn(hObject, eventdata, handles) % hObject handle to c_num (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
基本界面如下
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2013-04-28 10:50 6125啊。。。找了一下,R 居然真的有办法可以多cpu平行运算!! ... -
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