一、簡介

1 設計目標
1.1 設計一個基於GUI的學生成績管理與分析系統
（1）設計一個插入背景的登入介面
（2）以某班某課成績為研究物件，設計幾個對話方塊，實現：
1.2 查詢功能：
點選學生姓名，在列表檢視顯示相應的學號、成績
1.3 統計功能：
讀取資料庫的學生成績資訊，進行統計從而繪製該課程學生成績直方圖（註釋：學生成績分幾段，統計每段分數的人數，選擇分數段中間資料，以此資料與人數為橫、縱座標，繪製直方圖）以及餅圖（對各分數段進行統計，便於直觀的看出該課程成績分佈情況）
分析功能：
（1）該課的最低分、最高分以及相對應的學號
（2）該課程的平均分和均方差
（3）將該課程成績按照從大到小排列、顯示相對應學號
（4）按照學號顯示學生成績的原始分
1.4 設計退出系統的結束介面

2 實現方法
2.1 利用matlab語言指令編寫程式和GUI設計對話方塊。
2.2 直接利用matlab中的函式來求最低分、最高分、平均分、標準方差、對成績進行排序。
2.3 利用matlab中函式進行統計、分析，繪製直方圖以及餅狀圖。

3 設計內容
3.1 GUI圖形設計
（1）建立GUI物件新增需要的控制元件，加入需要的按鈕、選單控制元件、靜態文字框、列表框等。
（2）修改控制元件屬性，屬性檢視器提供了一系列屬性，可以通過修改相應屬性來改變控制元件。
3.2 編寫m檔案
當建立GUI後，在執行或儲存介面時，會產生一個M檔案，單擊M-file Editor 圖示按鈕來編寫該GUI下每個物件的Cllback與一些初始設定。直接在各物件callback下輸入當用戶按下這個物件後所應該呼叫執行的操作所對應的程式程式碼即可。

二、原始碼

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

% Last Modified by GUIDE v2.5 02-Jun-2012 10:49:58

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @chengjichaxun_OpeningFcn, ...
                   'gui_OutputFcn',  @chengjichaxun_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 chengjichaxun is made visible.
function chengjichaxun_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 chengjichaxun (see VARARGIN)
 ha=axes('units','normalized','position',[0 0 1 1]);
 uistack(ha,'down')
 %II=imread('禾木01.bmp');%裡面的引數可以是你自己的圖片，把名字連同格式寫進去就可以了
 II=imread('dong.jpg');
 image(II)
 colormap gray
 set(ha,'handlevisibility','off','visible','off');
 %全域性資料檔案
global dat;
%開啟資料夾 路徑對話方塊，顯示xls字尾的檔案，等待選中
[filename,pathname]=uigetfile('*.xls');
file=[pathname,filename];
%開啟存有成績的excel檔案
dat=xlsread('data.xls','','')
%將成績資料存到handle結構裡
handles.chengji=dat
% Choose default command line output for chengjichaxun
handles.output = hObject;

%Update handles structure
guidata(hObject,handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = chengjichaxun_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 selection change in listbox1.
function listbox1_Callback(hObject, eventdata, handles)
% hObject    handle to listbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns listbox1 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from listbox1


%  value=get(hObject,'value')-1;
%  set(handles.edit1,'string',handles.chengji(value,:));
 value=get(hObject,'value')-1;
set(handles.edit1,'string',num2str(handles.chengji(value,:)));






% --- Executes during object creation, after setting all properties.
function listbox1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to listbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: listbox 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 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


% --- 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)

 [FileName PathName]=uigetfile({'*.xls'},'Choose a File');
 str=[PathName FileName];
 
set(handles.edit2,'string',str);
 
[chengji xingming]=xlsread(str);
 
 set(handles.listbox1,'string',xingming(:,1));
 
 handles.chengji=chengji;%全域性引數更新
 
guidata(hObject,handles);
function varargout = Login(varargin)
% LOGIN M-file for Login.fig
%      LOGIN, by itself, creates a new LOGIN or raises the existing
%      singleton*.
%
%      H = LOGIN returns the handle to a new LOGIN or the handle to
%      the existing singleton*.
%
%      LOGIN('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in LOGIN.M with the given input arguments.
%
%      LOGIN('Property','Value',...) creates a new LOGIN or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before Login_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to Login_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 Login

% Last Modified by GUIDE v2.5 30-May-2012 17:40:05

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @Login_OpeningFcn, ...
                   'gui_OutputFcn',  @Login_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

 

三、執行結果

四、備註

版本：2014a

完整程式碼或代寫加1564658423