MATLAB 二次函数的画图

function varargout = huatu(varargin)

% HUATU MATLAB code for huatu.fig

% HUATU, by itself, creates a new HUATU or raises the existing

% singleton*.

%

% H = HUATU returns the handle to a new HUATU or the handle to

% the existing singleton*.

%

% HUATU('CALLBACK',hObject,eventData,handles,...) calls the local

% function named CALLBACK in HUATU.M with the given input arguments.

%

% HUATU('Property','Value',...) creates a new HUATU or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before huatu_OpeningFcn gets called. An

% unrecognized property name or invalid value makes property application

% stop. All inputs are passed to huatu_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 huatu

% Last Modified by GUIDE v2.5 15-Jan-2014 13:13:56

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ...

'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @huatu_OpeningFcn, ...

'gui_OutputFcn', @huatu_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 huatu is made visible.

function huatu_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