一个matlab的gui小程序

程序要求

大作业题：
参照《MATLAB程序设计与应用》（第二版 刘卫国）中228页-230页之间的例8.3及例8.4,编制程序。具体内容为：编制对话框软件，实现y=sin(3x)+x2-1的计算，x的具体数值可由用户随机”输入”，可能是单个数，也可能是向量或矩阵；”计算”后“结果”y以具体数字或二维图形显示出来。

关键代码解读

% 获取edit数据
x = str2num(get(handles.edit1,'String')); 
[row, col] = size(x);

% 如果 row*col == 1 说明输入是单个数，否则可能为向量
if row*col ==1
    res = sin(3*x)+x*x-1;
    set(handles.edit2,'String',res);
else
    set(handles.edit2,'String','vector');
    
    axes(handles.axes1)
    res = sin(3*x)+x.*x-1;
    xaxis = randperm(col);
    xaxis = sort(xaxis)
    f1 = plot(x,res)
end

源代码

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

% Last Modified by GUIDE v2.5 17-Dec-2015 16:30:21

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @qiwei_OpeningFcn, ...
                   'gui_OutputFcn',  @qiwei_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 qiwei is made visible.
function qiwei_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 qiwei (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = qiwei_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)
x = str2num(get(handles.edit1,'String'));
[row, col] = size(x);

if row*col ==1
    res = sin(3*x)+x*x-1;
    set(handles.edit2,'String',res);
else
    set(handles.edit2,'String','vector');
    
    axes(handles.axes1)
    % x.*x
    % col =10
    res = sin(3*x)+x.*x-1;
    xaxis = randperm(col);
    xaxis = sort(xaxis)
    f1 = plot(x,res)
    %res
end


% --- Executes during object creation, after setting all properties.
function pushbutton1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called




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



function edit2_Callback(hObject, eventdata, handles)
% hObject    handle to edit2 (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 edit2 as text
%        str2double(get(hObject,'String')) returns contents of edit2 as a double


% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit2 (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