【数据分析】学生成绩管理系统含GUI界面

1 简介

信息技术正在逐步深入,广泛的应用到教育管理中,在技术上管理信息系统的实施已逐步成熟.要发展学校信息系统,要高效率地有机地组织内部信息,尤其是进行深化,细致的分析成绩信息,就必须根据自身特点建立相适应的学生成绩管理统计,分析系统.本系统采用"自上而下地总体规划,自下而上地应用开发"的策略,介绍了在matlab境下开发一个管理信息系统的过程.创建了一套行之有效的计算机管理学生成绩的方案.

2 部分代码

function varargout = chengji(varargin)gui_Singleton = 1;gui_State = struct('gui_Name',       mfilename, ...                   'gui_Singleton',  gui_Singleton, ...                   'gui_OpeningFcn', @chengji_OpeningFcn, ...                   'gui_OutputFcn',  @chengji_OutputFcn, ...                   'gui_LayoutFcn',  [] , ...                   'gui_Callback',   []);if nargin && ischar(varargin{1})    gui_State.gui_Callback = str2func(varargin{1});endif 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 chengji is made visible.function chengji_OpeningFcn(hObject, eventdata, handles, varargin)​handles.output = hObject;Hc_grid=uicontrol(gcf,'style','toggle','string','Grid','position',[650 165 60 29],'callback','grid');%在图形窗口画网格线​guidata(hObject, handles);​function varargout = chengji_OutputFcn(hObject, eventdata, handles) varargout{1} = handles.output;​% --- Executes on selection change in listbox1.function listbox1_Callback(hObject, eventdata, handles)value=get(hObject,'value')-1;if(value==0)  set(handles.edit1,'string','please choose a name'); %显示成绩 elseset(handles.edit1,'string',num2str(handles.chengji(value,:)));%确保edit1中是数字end% --- Executes during object creation, after setting all properties.function listbox1_CreateFcn(hObject, eventdata, handles)if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))    set(hObject,'BackgroundColor','white');end​function edit1_Callback(hObject, eventdata, handles)function edit1_CreateFcn(hObject, eventdata, handles)if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))    set(hObject,'BackgroundColor','white');end​​function edit2_Callback(hObject, eventdata, handles)function edit2_CreateFcn(hObject, eventdata, handles)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)[FileName PathName]=uigetfile({'*.xls','Excel Files(*.xls)';'*.txt','Text Files(*.txt)';'*.*','All Files(*.*)'},'Choose a file');%uigetfile用来选择读入的文件L=length(FileName);if(L<5)    errordlg('请选择正确文件','File Open Error');%建立一个默认参数的错误对话框    return;endtest=FileName(1,end-3:end);%定义一个变量test用于文件类型的确定str=[PathName FileName];set(handles.edit2,'string',str);%使打来的文件路径和文件名显示在edit2global len;global ave1;global ave2;global ave3;global d1;global d2;global d3;switch test    case '.txt' %当文件为记事本时    fin=fopen('chengji.txt','r');    str=fgetl(fin);%按行从文件中读取数据，但不读取换行符    [str1 str2 str3 str4]=strread(str,'%s %s %s %s','delimiter',' ');%delimiter用于指定分隔符；%s：输出字符串    xingming(1)=str1;%就是单词name    counter=2;    h=waitbar(0,'please wait a moment,reading the file now ............');    for i=1:100,        waitbar(i/100,'h',[num2str(i),'%'])%显示百分比        pause(.1)    end    while feof(fin)==0  %feof判断是否为文件结尾          str=fgetl(fin);          [name chinese math english]=strread(str,'%s %d %d %d','delimiter','  ');% %d用于输出十进制数          xingming(counter)=name;%读取学生姓名          chengji(counter-1,:)=[chinese math english];%定义一个成绩的矩阵用于储存成绩          counter=counter+1;          waitbar(counter/(counter+1),h,'On working......');    end    waitbar(1,h,'Finished');    delete(h);%读取数据完成后释放h对象    set(handles.listbox1,'string',xingming);    handles.chengji=chengji;        len=length(chengji);%求矩阵的长度    d1=chengji(1:len,1);    ave1=sum(d1);%求语文的总分    d2=chengji(1:len,2);    ave2=sum(d2);%求数学的总分    d3=chengji(1:len,3);    ave3=sum(d3);%求英语的总分    fclose(fin);    %当文件格式为表格时    case '.xls' %当文件为表格时    h=waitbar(0,'please wait a moment');%创建一个进度条    for i=1:100,        waitbar(i/100,h,[num2str(i),'%'])%显示百分比        pause(.1)    end    waitbar(1,h,'Finished');    delete(h);    [chengji xingming]=xlsread(str);    set(handles.listbox1,'string',xingming(:,1));    handles.chengji=chengji;    len=length(chengji);%求矩阵的长度    d1=chengji(1:len,1);    ave1=sum(d1);%求语文的总分    d2=chengji(1:len,2);    ave2=sum(d2);%求数学的总分    d3=chengji(1:len,3);    ave3=sum(d3);%求英语的总分    otherwise        errordlg('Wrong File','File Open Error');        returnend  guidata(hObject,handles);​% --- Executes on button press in pushbutton2.function pushbutton2_Callback(hObject, eventdata, handles)clc;clear all;close(gcf);​function pushbutton1_CreateFcn(hObject, eventdata, handles)​function popupmenu1_Callback(hObject, eventdata, handles)val=get(hObject,'Value');str=get(hObject,'String');global len;global d1;global d2;global d3;global d;global ave1;global ave2;global ave3;global ave;switch str{val}        case 'chinese'         d=d1;        ave=ave1/len;%求语文的平均分    case  'math'       d=d2;       ave=ave2/len;%求数学的平均分    case 'english'       d=d3;       ave=ave3/len;%求英语的平均分endguidata(hObject,handles);​function popupmenu1_CreateFcn(hObject, eventdata, handles)if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))    set(hObject,'BackgroundColor','white');end​​

3 仿真结果

4 参考文献

[1]张颖. 学生成绩统计,分析软件的设计与实现[D]. 内蒙古师范大学, 2011.​

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