the last commit for lab6 exercises and a2 exercises

1
new file: lab3/createfigure.m
2025-12-09 19:26:41 +08:00 · 2025-11-26 19:01:27 +08:00 · 2025-11-20 20:29:08 +08:00 · 2025-11-17 11:16:02 +08:00 · 2025-11-17 11:15:18 +08:00 · 2025-11-03 11:24:09 +08:00
142 changed files with 4913 additions and 4 deletions
--- a/344.txt
+++ b/344.txt
@@ -0,0 +1,8 @@
 点名    X(m)      Y(m)      H(mm)     code
       3         52.000         57.000         53.000         49.000         48.000         46.000         51.000         49.000         49.000         48.000          56.000          48.000          51.000          54.000          50.000          46.000          51.000          49.000          57.000          48.000    52.000    48.000    53.000    46.000    56.000    50.000    52.000    48.000     s50
      63         52.000         57.000         52.000         56.000         56.000         46.000         57.000         48.000         56.000         48.000          56.000          48.000          52.000          50.000          54.000          46.000          48.000          48.000          56.000          48.000    52.000    48.000    56.000    46.000    56.000    52.000    57.000    48.000     S77
 点名    X(m)      Y(m)      H(mm)     code
       3      49510.311       80362.319   405.824     s50
      63      49488.908       80426.008   408.849     S77
--- a/C11_11_3.m
+++ b/C11_11_3.m
@@ -0,0 +1,24 @@
 screen=get(0,'ScreenSize');
 W=screen(3);
 H=screen(4);
 figure('Color',[1,1,1],'Position',[0.2*H,0.2*H,0.5*W,0.5*H],'Name','图形演示系统','NumberTitle','off','MenuBar','none');
 hplot=uimenu(gcf,'text','&Plot');
 uimenu(hplot,'text','Sine Wave','Callback',...
    ['t=-pi:pi/20:pi;','plot(t,sin(t));'...
    'set(hgon,''Enable'',''on'');','set(hgoff,''Enable'',''on'');'...
    'set(hbon,''Enable'',''on'');','set(hboff,''Enable'',''off'');']);
 uimenu(hplot,'text','Cosine Wave','Callback',...
    ['t=-pi:pi/20:pi;','plot(t,cos(t));'...
    'set(hgon,''Enable'',''on'');','set(hgoff,''Enable'',''on'');'...
    'set(hbon,''Enable'',''on'');','set(hboff,''Enable'',''off'');']);
 % option
 hoption=uimenu(gcf,'text','&Option');
 hgon=uimenu(hoption,'text','&Grid on','Callback','grid on','Enable','off');
 hgoff=uimenu(hoption,'text','&Grid off','Callback','grid off','Enable','off');
 hbon=uimenu(hoption,'text','&Box on','Callback','box on','Enable','off');
 hboff=uimenu(hoption,'text','&Box off','Callback','box off','Enable','off');
 hwincor=uimenu(hoption,'text','&Window Color','Separator','on');
 uimenu(hwincor,'text','&Red','Accelerator','r','Callback','set(gcf,''color'',''R'')');
 uimenu(hwincor,'text','&Blue','Accelerator','b','Callback','set(gcf,''color'',''b'')');
 uimenu(hwincor,'text','&Yellow','Accelerator','y','Callback','set(gcf,''color'',''y'')');
 uimenu(hwincor,'text','&White','Accelerator','w','Callback','set(gcf,''color'',''w'')');
--- a/C11_11_4.m
+++ b/C11_11_4.m
@@ -0,0 +1,11 @@
 x=0:pi/100:2*pi;
 y=2*exp(-0.5*x).*sin(2*pi*x);
 h1=plot(x,y);
 hc=uicontextmenu;
 h1s=uimenu(hc,'Text','线形');
 h1w=uimenu(hc,'Text','线宽');
 uimenu(h1s,'Text','虚线','Callback','set(h1,''LineStyle'','':'');');
 uimenu(h1s,'Text','实线','Callback','set(h1,''LineStyle'',''-'');');
 uimenu(h1w,'Text','粗','Callback','set(h1,''LineWidth'',2);');
 uimenu(h1w,'Text','细','Callback','set(h1,''LineWidth'',0.5);');
 set(h1,'UIContextMenu',hc)
--- a/C11_11_5.fig
+++ b/C11_11_5.fig
--- a/C11_11_5.m
+++ b/C11_11_5.m
@@ -0,0 +1,118 @@
 function varargout = C11_11_5(varargin)
 % C11_11_5 MATLAB code for C11_11_5.fig
 %      C11_11_5, by itself, creates a new C11_11_5 or raises the existing
 %      singleton*.
 %
 %      H = C11_11_5 returns the handle to a new C11_11_5 or the handle to
 %      the existing singleton*.
 %
 %      C11_11_5('CALLBACK',hObject,eventData,handles,...) calls the local
 %      function named CALLBACK in C11_11_5.M with the given input arguments.
 %
 %      C11_11_5('Property','Value',...) creates a new C11_11_5 or raises the
 %      existing singleton*.  Starting from the left, property value pairs are
 %      applied to the GUI before C11_11_5_OpeningFcn gets called.  An
 %      unrecognized property name or invalid value makes property application
 %      stop.  All inputs are passed to C11_11_5_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 C11_11_5
 % Last Modified by GUIDE v2.5 31-Oct-2025 11:38:36
 % Begin initialization code - DO NOT EDIT
 gui_Singleton = 1;
 gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @C11_11_5_OpeningFcn, ...
                   'gui_OutputFcn',  @C11_11_5_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 C11_11_5 is made visible.
 function C11_11_5_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 C11_11_5 (see VARARGIN)
 headles.peaks
 % Choose default command line output for C11_11_5
 handles.output = hObject;
 % Update handles structure
 guidata(hObject, handles);
 % UIWAIT makes C11_11_5 wait for user response (see UIRESUME)
 % uiwait(handles.figure1);
 % --- Outputs from this function are returned to the command line.
 function varargout = C11_11_5_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)
 % --- Executes on button press in pushbutton2.
 function pushbutton2_Callback(hObject, eventdata, handles)
 % hObject    handle to pushbutton2 (see GCBO)
 % eventdata  reserved - to be defined in a future version of MATLAB
 % handles    structure with handles and user data (see GUIDATA)
 % --- Executes on button press in Contour3.
 function Contour3_Callback(hObject, eventdata, handles)
 % hObject    handle to Contour3 (see GCBO)
 % eventdata  reserved - to be defined in a future version of MATLAB
 % handles    structure with handles and user data (see GUIDATA)
 % --- Executes on selection change in ChooseFun.
 function ChooseFun_Callback(hObject, eventdata, handles)
 % hObject    handle to ChooseFun (see GCBO)
 % eventdata  reserved - to be defined in a future version of MATLAB
 % handles    structure with handles and user data (see GUIDATA)
 % Hints: contents = cellstr(get(hObject,'String')) returns ChooseFun contents as cell array
 %        contents{get(hObject,'Value')} returns selected item from ChooseFun
 % --- Executes during object creation, after setting all properties.
 function ChooseFun_CreateFcn(hObject, eventdata, handles)
 % hObject    handle to ChooseFun (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
--- a/C6_6_16.m
+++ b/C6_6_16.m
@@ -0,0 +1,7 @@
 x=0.46:0.01:0.49;
 f=[0.4846555,0.4937542,0.5027498,0.5116683];
 format long
 interp1(x,f,0.472)
 interp1(x,f,0.472,'nearest');
 interp1(x,f,0.472,'pchip');
 interp1(x,f,0.472,'spline');
--- a/C6_6_17.m
+++ b/C6_6_17.m
@@ -0,0 +1,8 @@
 x=0:0.1:1;
 y=0:0.2:2;
 [X,Y]=meshgrid(x,y);
 z=X.^2+Y.^2;
 interp2(x,y,z,0.5,0.5)
 interp2(x,y,z,[0.5,0.6],0.5)
 interp2(x,y,z,[0.5,0.6]',[0.4,0.5])
 interp2(x,y,z,[0.5,0.6]',[0.4,0.5],'spline')
--- a/C6_6_18.m
+++ b/C6_6_18.m
@@ -0,0 +1,7 @@
 d=0:2.5:10;
 t=(0:30:60)';
 c=[95,14,0,0,0;88,48,32,12,6;67,64,54,48,41];
 di=0:2:10;
 ti=(0:20:60)';
 ci=interp2(d,t,c,di,ti)
 surf(di,ti,ci);
--- a/COMM.m
+++ b/COMM.m
@@ -0,0 +1,10 @@
 function COMM(hedit,hpopup,hlist)
 com=get(hedit,'String');
 n1=get(hpopup,'Value');
 n2=get(hlist,'Value');
 if ~isempty(com)
    chpop={'spring','summer','autumn','winter'};
    chlist={'grid on','grid off','box on','box off'};
    colormap(eval(chpop{n1}));
    eval(chlist{n2});
 end
--- a/a2_1_1.m
+++ b/a2_1_1.m
@@ -0,0 +1,9 @@
 % 学号为24110901003
 % 学号最后的非零第一位、二位数字，u=
 u=3;
 v=1;
 % 因为比较复杂，将分子分母分开计算
 m=(exp(u)+v)^2;
 n=v^2-u;
 result=m/n;
 disp(result)
--- a/a2_1_2.m
+++ b/a2_1_2.m
@@ -0,0 +1,9 @@
 % 学号为24110901003
 % 学号最后的非零第一位、二位数字，u=3，v=1;
 u=3;
 v=1;
 % 因为比较复杂，将分子分母分开计算
 m=sqrt(u-3*v);
 n=u*v;
 result=m/n;
 disp(result);
--- a/a2_3.m
+++ b/a2_3.m
@@ -0,0 +1,2 @@
 A=[3,0,0,0;0,0,0,0;0,0,0,0;0,0,0,0;0,0,0,7];
 B=sprank(A)
--- a/a2_5.m
+++ b/a2_5.m
@@ -0,0 +1,5 @@
 % 24110901003
 a=3;
 b=a>5 % 表达式值为0
 a(b)=sqrt(a(b)) % 值为3
 a(~b)=a(~b).^2 % 值为9
--- a/a2_6.m
+++ b/a2_6.m
@@ -0,0 +1,16 @@
 % 学号24110901003
 % a=3,b=1,c=9;
 a=3;
 b=1;
 c=9;
 % 定义x
 syms x
 % 方程表达式
 f=a*x^2+b*x+c;
 % 用solve函数来解
 solve(f==0)
 % 输出如下
 % ans =
 % 
 % - (107^(1/2)*1i)/6 - 1/6
 %   (107^(1/2)*1i)/6 - 1/6
--- a/b3_5.m
+++ b/b3_5.m
@@ -0,0 +1,10 @@
 % c取值为学号最后的非零第一位数字
 c=3
 switch (c) 
    case {1, 3, 5, 7, 9}, 
    disp('The value is odd.'); 
    case {2, 4, 6, 8, 10}, 
    disp('The value is even.'); 
    otherwise
    disp('The value is out of range.'); 
 end
--- a/b4_3.m
+++ b/b4_3.m
@@ -0,0 +1,13 @@
 % 定义x,y
 x=6
 y=6
 if (x>=0 && y>=0)
    r=x+y
 elseif (x>=0 && y<0)
    r=x+y^2;
 elseif (x<0 && y>=0)
    r=x^2+y;
 elseif (x<0 && y<0)
    r=x^2+y^2;
 end
 disp(x)
--- a/c11_11_1.m
+++ b/c11_11_1.m
@@ -0,0 +1,13 @@
 hf=figure('Color',[0,1,1],'Position',[100,200,400,200],'Name','数值转换','NumberTitle','off','MenuBar','none');
 uicontrol(hf,'Style','text','Position',[80,160,40,20],'HorizontalAlignment','center','String','输入框','BackgroundColor',[0,1,1]);
 uicontrol(hf,'Style','text','Position',[280,160,40,20],'HorizontalAlignment','center','String','输出框','BackgroundColor',[0,1,1]);
 uicontrol(hf,'Style','frame','Position',[20,65,165,90],'BackgroundColor',[1,1,0]);
 uicontrol(hf,'Style','text','Position',[25,110,85,25],'HorizontalAlignment','center','String','十进制','BackgroundColor',[1,1,0]);
 uicontrol(hf,'Style','text','Position',[25,75,85,25],'HorizontalAlignment','center','String','2~16进制','BackgroundColor',[1,1,0]);
 he1=uicontrol(hf,'Style','edit','Position',[110,115,60,25],'BackgroundColor',[0,1,0]);
 he2=uicontrol(hf,'Style','edit','Position',[110,80,60,25],'BackgroundColor',[0,1,0]);
 uicontrol(hf,'Style','frame','Position',[215,65,165,90],'BackgroundColor',[1,1,0]);
 ht=uicontrol(hf,'Style','text','Position',[255,95,90,30],'HorizontalAlignment','center','BackgroundColor',[0,1,0]);
 COMM=['n=str2num(get(he1,''string''));','b=str2num(get(he2,''string''));','dec=trdec(n,b);','set(ht,''string'',dec);'];
 uicontrol(hf,'Style','pushbutton','Position',[55,20,90,25],'String','转 换','Callback',COMM);
 uicontrol(hf,'Style','pushbutton','Position',[255,20,90,30],'String','退 出','Callback','close(hf)');
--- a/c11_11_2.m
+++ b/c11_11_2.m
@@ -0,0 +1,10 @@
 clf;
 set(gcf,'Unit','normalized','Position',[0.2,0.3,0.5,0.40]);
 set(gcf,'Menubar','none','Name','图形演示','NumberTitle','off');
 axes('Position',[0.05,0.15,0.5,0.8]);
 uicontrol(gcf,'Style','text','Units','normalized','Position',[0.60,0.85,0.2,0.1],'String','输入绘图命令','HorizontalAlignment','center');
 hedit=uicontrol(gcf,'Style','edit','Units','normalized','Position',[0.60,0.15,0.2,0.68],'Max',2);
 hpopup=uicontrol(gcf,'Style','popupmenu','Units','normalized','Position',[0.83,0.8,0.15,0.15],'String','spring|summer|autumn|winter','Callback','COMM(hedit,hpopup,hlist)');
 hlist=uicontrol(gcf,'Style','listbox','Units','normalized','Position',[0.83,0.55,0.15,0.15],'String','Grid on|Grid off|Box on|Box off','Callback','COMM(hedit,hpopup,hlist)');
 hpush1=uicontrol(gcf,'Style','pushbutton','Units','normalized','Position',[0.83,0.35,0.15,0.15],'String','Draw','Callback','COMM(hedit,hpopup,hlist)');
 hpush2=uicontrol(gcf,'Style','pushbutton','Units','normalized','Position',[0.83,0.15,0.15,0.15],'String','关 闭','Callback','close all');
--- a/c5_5_11.m
+++ b/c5_5_11.m
@@ -0,0 +1,6 @@
 x=-1:1;
 y=[1,2,3,4,5;1,2,1,2,1;5,4,3,2,1];
 subplot(1,2,1);bar(x,y,'grouped');
 title('Grouped');axis([-3,3,0,6]);
 subplot(1,2,2);barh(x,y,'stacked');
 title('Stack');
--- a/c5_5_13.m
+++ b/c5_5_13.m
@@ -0,0 +1,4 @@
 y=randn(500,1);
 theta=y*pi;
 rose(theta);
 title('再极坐标下的直方图');
--- a/c5_5_14.m
+++ b/c5_5_14.m
@@ -0,0 +1,3 @@
 pie([7,17,23,19,5],[0,0,0,0,1]);
 title('饼图');
 legend('优秀','良好','中等','及格','不及格');
--- a/c5_5_15.m
+++ b/c5_5_15.m
@@ -0,0 +1,6 @@
 t=0:2*pi/8:2*pi;
 t=[t,t(1)];
 x=sin(t);
 y=cos(t);
 fill(x,y,'r');
 axis equal;axis([-1.5,1.5,-1.5,1.6])
--- a/c5_5_16.m
+++ b/c5_5_16.m
@@ -0,0 +1,8 @@
 x=0:0.35:7;
 y=2*exp(-0.5*x);
 subplot(1,3,1);scatter(x,y,'green');
 title('scatter(x,y,''green'')');axis([0,7,0,2]);
 subplot(1,3,2);stairs(x,y,'b');
 title('stairs(x,y,''b'')');axis([0,7,0,2]);
 subplot(1,3,3);stem(x,y,'k');
 title('stem(x,y,''k'')');axis([0,7,0,2]);
--- a/c5_5_17.m
+++ b/c5_5_17.m
@@ -0,0 +1,8 @@
 x=-pi:pi/8:pi;
 y=sin(x);
 subplot(2,2,1);compass(x,y);
 title('罗盘图');
 subplot(2,2,2);feather(x,y);
 title('羽毛图');
 subplot(2,1,2);quiver(x,y);
 title('箭头图');
--- a/c5_5_18.m
+++ b/c5_5_18.m
@@ -0,0 +1,8 @@
 t=0:pi/50:2*pi;
 x=8*cos(t);
 y=4*sqrt(2)*sin(t);
 z=-4*sqrt(2)*sin(t);
 plot3(x,y,z,'p');
 title('Line in 3-D Space');
 text(0,0,0,'origin');
 xlabel('X'),ylabel('Y'),zlabel('Z');grid;
--- a/c5_5_20.m
+++ b/c5_5_20.m
@@ -0,0 +1,12 @@
 x=0:0.1:2*pi;
 [x,y]=meshgrid(x);
 z=sin(y).*cos(x);
 subplot(2,2,1);mesh(x,y,z);
 xlabel('x-axis'),ylabel('y-axis'),zlabel('z-axis');
 title('mesh');
 subplot(2,2,2);surf(x,y,z);
 xlabel('x-axis'),ylabel('y-axis'),zlabel('z-axis');
 title('surf');
 subplot(2,1,2);plot3(x,y,z);
 xlabel('x-axis'),ylabel('y-axis'),zlabel('z-axis');
 title('plot3');
--- a/c5_5_21.m
+++ b/c5_5_21.m
@@ -0,0 +1,18 @@
 m=30;
 z=1.2*(0:m)/m;
 r=ones(size(z));
 theta=(0:m)/m*pi*2;
 x1=r'*cos(theta);
 y1=r'*sin(theta);
 z1=z'*ones(1,m+1);
 x=(-m:2:m)/m;
 x2=x'*ones(1,m+1);
 y2=r'*cos(theta);
 z2=r'*sin(theta);
 surf(x1,y1,z1);
 axis equal,axis off;
 hold on;
 surf(x2,y2,z2);
 axis equal,axis off;
 title('两个圆柱体相交图形');
 hold off;
--- a/c5_5_22.m
+++ b/c5_5_22.m
@@ -0,0 +1,13 @@
 [x,y] = meshgrid(-10:0.2:10);
 z1 = (x.^2-2*y.^2) + eps;
 a=input('a=?');
 z2=a*ones(size(x));
 subplot(1,2,1);
 mesh(x,y,z1);hold on;mesh(x,y,z2);
 v=[-10,10,-10,10,-100,100];axis(v);grid;
 hold off
 r0=abs(z1-z2)<=1;
 xx=r0.*x;yy=r0;zz=r0.*z2;
 subplot(1,2,2);
 plot3(xx(r0~=0),yy(r0~=0),zz(r0~=0),'*');
 axis(v);grid;
--- a/c5_5_23.m
+++ b/c5_5_23.m
@@ -0,0 +1,14 @@
 [x,y]=meshgrid(-8:0.5:8);
 z=sin(sqrt(x.^2+y.^2));
 subplot(2,2,1);
 meshc(x,y,z);
 title('meshc(x,y,z)');
 subplot(2,2,2);
 meshz(x,y,z);
 title('meshz(x,y,z)');
 subplot(2,2,3);
 surfc(x,y,z);
 title('surfc(x,y,z)');
 subplot(2,2,4);
 surfl(x,y,z);
 title('surfl(x,y,z)');
--- a/c5_5_24.m
+++ b/c5_5_24.m
@@ -0,0 +1,5 @@
 t=0:pi/20:2*pi;
 [x,y,z]=cylinder(2+sin(t),30);
 subplot(1,3,1);surf(x,y,z);
 [x,y,z]=sphere;
 subplot(1,3,1);surf(x,y,z);
--- a/c_5_5_12.m
+++ b/c_5_5_12.m
@@ -0,0 +1,6 @@
 y=randn(500,1);
 subplot(1,2,1);
 hist(y);title('高斯分布直方图');
 x=-4:0.1:4;
 subplot(1,2,2)
 hist(y,x);title('指定范围的高斯分布直方图');
--- a/caidan1.m
+++ b/caidan1.m
@@ -0,0 +1,7 @@
 screen=get(0,'ScreenSize');
 W=screen(3);
 H=screen(4);
 hf=figure('Color',[1,1,1],'Position',[1,1,0.4*W,0.3*H],'Name','菜单设计示例1','NumberTitle','off','MenuBar','none');
 hfile=uimenu(hf,"Text",'&File');
 hhelp=uimenu(hf,"Text",'&Help');
 uimenu(hfile,'Text','&New','Call','disp(''New item'')');
--- a/deg2rad.m
+++ b/deg2rad.m
@@ -1,9 +1,6 @@
 function jrad=deg2rad(deg)
 degd=fix(deg);
 degf=(deg-degd)*100;
 degm=fix(degf);
 degs=(degf-degm)/36.0;
-jrad=(degd+degm/60.00+degs)* pi / 180.0;
+jrad=(degd+degm/60.00+degs)* pi / 180.0;
--- a/difun.m
+++ b/difun.m
@@ -0,0 +1,8 @@
 function y=difun(x)
 if x<-pi
    y=-x-pi
 elseif x>-pi && x<pi
    y=sin(x)
 else
    y=(x-pi)/2
 end
--- a/dms2mat.m
+++ b/dms2mat.m
@@ -0,0 +1,7 @@
 function dmsv=dms2mat(dv)
 [l,c]=size(dv);
 for i=1:l
    dmsv(i,1)=fix(dv);
    dmsv(i,2)=fix((dv-fix(dv))*60);
    dmsv(i,3)=(dv-dmsv(i,1)-dmsv(i,2)*60);
 end
--- a/dms2rad.m
+++ b/dms2rad.m
@@ -0,0 +1,2 @@
 function radv=dms2rad(dms)
 radv=dms*pi/180;
--- a/image1.png
+++ b/image1.png
--- a/jianjiepingcha.m
+++ b/jianjiepingcha.m
@@ -0,0 +1,23 @@
 disp('水准网间接平差')
 disp('已知高程')
 Ha=5.015
 Hb=6.016
 disp('观测高差（m）')
 L=[1.359;2.009;0.363;1.012;0.657;-0.357]
 disp('系数矩阵')
 B=[1,0;0,1;1,0;0,1;-1,1;-1,0]
 l=[0;0;4;3;7;2]
 disp('C:')
 C=1*ones(1,6);
 S=[1.1,1.7,2.3,2.7,2.4,4.0]
 P=C./S
 P=diag(P)
 disp('参数的解')
 x=inv(B'*P*B)*B'*P*L
 disp('wucha')
 V=B*x-l
 L1=L+V/1000
 disp('jingdu')
 n=6;
 t=2;
 delta=sqrt(V'*P*V/(n-t))
--- a/jjpc.m
+++ b/jjpc.m
@@ -0,0 +1,11 @@
 function [csgz,qxx,dert0,dlj]=jjpc(bb,ll,pp)
 pn=diag(pp);
 nbb=bb'*pn*bb;
 ww=bb'*pn*ll;
 qxx=inv(nbb);
 csgz=qxx*ww;
 vv=bb*csgz-ll;
 vtpv=ll'*pn*ll-ww'*csgz;
 [rr,nn]=size(bb);
 dert0=sqrt(vtpv/rr);
 dlj=der0*dert0*bb*qxx*bb';
--- a/jjpcs.m
+++ b/jjpcs.m
@@ -0,0 +1,3 @@
 bbb=[]
 lll=[]
 quan=[]
--- a/kongjian1.m
+++ b/kongjian1.m
@@ -0,0 +1,4 @@
 pbstart=uicontrol(gcf,"Style","pushbutton","Position",[50,5,60,25],"String","Start Plot","Callback",...
    "t=-pi:pi/20:2*pi;plot(t,sin(t))");
 ptgrid=uicontrol(gcf,"Style","togglebutton","Position",[150,5,60,25],...
    "String","Grid","Callback",'grid');
--- a/kongjian2.m
+++ b/kongjian2.m
@@ -0,0 +1,9 @@
 set(gcf,'Color','R');
 htext=uicontrol(gcf,"Style","text","String","Color Option","Position",[200,130,150,20]);
 % 单选
 hr=uicontrol(gcf,"Style","radiobutton","String","Red","Position",[200,100,150,25],"Value",1,...
    "Callback",['set(hr,''Value'',1);','set(hb,''Value'',0);','set(hy,''Value'',0);','set(gcf,''Color'',''R'')']);
 hb=uicontrol(gcf,"Style","radiobutton","String","Blue","Position",[200,75,150,25],"Value",0,...
    "Callback",['set(hr,''Value'',0);','set(hb,''Value'',1);','set(hy,''Value'',0);','set(gcf,''Color'',''B'')']);
 hy=uicontrol(gcf,"Style","radiobutton","String","Yellow","Position",[200,50,150,25],"Value",0,...
    "Callback",['set(hy,''Value'',0);','set(hb,''Value'',0);','set(hy,''Value'',1);','set(gcf,''Color'',''Y'')']);
--- a/kongjian3.m
+++ b/kongjian3.m
@@ -0,0 +1,11 @@
 htxt=uicontrol(gcf,"Style","text","Position",[200,125,150,25],"String","Set Window Properties");
 hp=uicontrol(gcf,"Style","checkbox","Position",[200,100,150,25],"String","My Position",...
    "Callback",["set(gcf,""Position"",[10,10,300,250];",...
    "if get(hp,""Value"")==1,",...
    "set(gcf,""Position"",[10,10,600,500]),",'end']);
 hc=uicontrol(gcf,"Style","checkbox","Position",[200,75,150,25],"String","My Color",...
    "Callback",["set(gcf,""color"",""w"");","if get(hc,""Value"")==1,","set(gcf,""color"",g]","end"]);
 hn=uicontrol(gcf,"Style","checkbox","Position",[200,50,150,25],"String","My Name",...
    "Callback",["set(gcf,""Name"",""未选择"";",...
    "if get(hn,""Value"")==1,",...
    "set(gcf,""Name"",""未选择"")","end");
--- a/kongjian4.m
+++ b/kongjian4.m
@@ -0,0 +1,2 @@
 hpop=uicontrol(gcf,"Style","popup","String",'red|blue|green|yellow|white','Position',[100,100,100,80],...
    'Callback',['cbcol=[''R'',''B'',''G'',''Y''];','set(gcf,''Color'',cbcol(get(hpop,''Value'')))']);
--- a/kongjian5.m
+++ b/kongjian5.m
@@ -0,0 +1,4 @@
 h1=uicontrol(gcf,'Style','listbox','String','red|blue|green|yellow|white',...
    'Position',[100,100,100,80],'Callback',...
    ['cbcol=[''r'',''b'',''g'',''y'',''w''];',...
    'set(gcf,''color'',cbcol(get(h1,''Value'')))']);
--- a/kongjian6.m
+++ b/kongjian6.m
@@ -0,0 +1,3 @@
 ftdir=uicontrol(gcf,'Style','frame','BackgroundColor','y','Position',[30,180,120,100]);
 edmulti=uicontrol(gcf,'Style','edit','String','Matlab is a very useful Language',...
    'Position',[50,200,75,55],'Max',2,'BackgroundColor','w');
--- a/kongjian7.m
+++ b/kongjian7.m
@@ -0,0 +1,9 @@
 fig=figure('Position',[20,20,400,150]);
 hsli1=uicontrol(fig,'Style','slider','Position',[50,50,120,20],'Min',200,'Max',800,'Value',400,...
    'Callback',['set(azmcur,''String'','...
    'num2str(get(hsli1,''Value'')));'...
    'set(gcf,''Position'',[20,20,get(hsli1,''Value''),300]);']);
 hsli2=uicontrol(fig,'Style','slider','Position',[240,50,120,20],'Min',100,'Max',600,'Value',300,...
    'Callback',['set(elvcur,''String'','...
    'num2str(get(hsli2,''Value'')));'...
    'set(gcf,''Position'',[20,20,400,get(hsli2,''Value'')]);']);
--- a/lab1/exercise1.m
+++ b/lab1/exercise1.m
@@ -0,0 +1,59 @@
 % 练习1
 x=linspace(-pi,pi,21)
 y=sin(x)
 % 练习2
 clear
 k=1:1000;
 kk=1./k;
 kkk=kk./k;
 res=sum(kkk)-(pi^2)/6
 % 练习3
 sum(kk-log(1000))
 % 练习4
 clear
 a=rand(2,3)
 x=a(1,:)
 y=a(2,:)
 norm(x)
 norm(y)
 acos(dot(x,y)/norm(x)/norm(y))
 % 练习5
 clear
 rand(3)
 det(ans)  % 线性无关
 % 练习6
 clear
 a=rand(3,2)
 x=a(1,:)
 y=a(2,:)
 z=a(3,:)
 alpha=x-z
 beta=y-z
 alpha=[alpha 0]
 beta=[beta 0]
 cross(alpha,beta)
 % 练习7
 clear
 a=11:19
 b=a
 for k=1:8
    b=[b;a+10*k];
 end
 rank(b)
 % 练习8
 y=[]
 for x=-6:0.05:6
    y=[y difun(x)];
 end
 plot(x,y)
 plot([-6:0.05:6],y)
 % 练习9
 A=[6,2,1,-1;2,4,1,0;1,1,4,-1;-1,0,-1,3];
 b=[6;1;5;-5]
 x=A\b
 % 练习10
 [diag(1:4) eye(4)]
 % 练习11
 num2p(123453656345)
 % 练习12
 ttry(100)
--- a/lab1/lab1.m
+++ b/lab1/lab1.m
@@ -0,0 +1,13 @@
 a=[2,3,6,7;4,2,8,6;3,6,9,2;4,7,9,3]
 a1=a([1:3],[2:3])
 a2=a(2,3)
 zeros(3,4)
 ones(5)
 eye(3)
 rand(4)
 randn(3)
 % 删除行列
 a(:,[3])=[]
 % 增加元素和列
 a(5,6)=45
 a(:,4)=[90,89,34,56,98]
--- a/lab2/dtor.m
+++ b/lab2/dtor.m
@@ -0,0 +1,7 @@
 % 度分秒转弧度
 function jrad=dtor(deg)
 degd=fix(deg);
 degf=(deg-degd)*100;
 degm=fix(degf);
 degs=(degf-degm)/36.0;
 jrad=(degd+degm*60.00+degs)*pi/180;
--- a/lab2/exercise2.m
+++ b/lab2/exercise2.m
@@ -0,0 +1,25 @@
 % 练习2第1-4题
 % 1
 A=[6,9,3;2,7,5];
 B=[2,4,1;4,6,8];
 A+B
 A*B
 A*B'
 % 2
 clear
 A=[3,2,0,1,5];
 roots(A)
 % 3
 clear
 A = [4,9,2;7,6,4;3,5,7];
 B = [37;26;28];
 A\B
 % 4
 syms x
 f = 3*x^4-12*x^3-5*x+9;
 int (f,x)
 diff(f,x)
 int(f,x,0,2)
--- a/lab2/exercise2.mlx
+++ b/lab2/exercise2.mlx
--- a/lab2/exercise2_5.m
+++ b/lab2/exercise2_5.m
@@ -0,0 +1,14 @@
 % 练习2第五题
 subplot(1,2,1)
 t=0:0.1:2*pi;
 x=sin(3*t).*cos(t);
 y=sin(3*t).*sin(t);
 plot(x,y,'-r','Linewidth',5);
 subplot(1,2,2)
 y1=sin(x);
 y2=sin(x).*exp(-0.1*x);
 plot(x,y1,'+b',x,y2,'-g')
 title('曲线y1 y2')
 xlabel('变量x')
 ylabel('变量y')
 legend('y1','y2');
--- a/lab2/exercise2_6.m
+++ b/lab2/exercise2_6.m
@@ -0,0 +1,16 @@
 x=1:10;
 y=[4.9,3.3,4.2,4.2,5.7,6.5,7.7,9.4,14.7,19.0];
 a=polyfit(x,y,2);
 b=polyfit(x,y,3);
 c=polyfit(x,y,4);
 xx=1:0.1:10;
 yy1=polyval(a,xx);
 yy2=polyval(b,xx);
 yy3=polyval(c,xx);
 plot(x,y,'*b')
 hold on
 plot(xx,yy1,'-r',xx,yy2,'-g',xx,yy3,'-y')
 title('2,3,4次曲线拟合')
 xlabel('变量x')
 ylabel('变量y')
 legend('y','yy1','yy2','yy3')
--- a/lab2/exercise2_7.m
+++ b/lab2/exercise2_7.m
@@ -0,0 +1,16 @@
 subplot(1,2,1);
 x=-3:0.1:3;
 y=-3:0.1:3;
 z=x.*exp(-x.^2-y.^2);
 plot3(x,y,z);
 subplot(1,2,2);
 [x,y]=meshgrid(-3:0.1:3);
 z=x.*exp(-x.^2-y.^2);
 surf(x,y,z);
 shading interp;
 colormap("spring");
 k=find(x<=0 & y<=0);
 z1=z;
 z1(k)=NaN;
 surf(x,y,z1);
 shading interp;
--- a/lab2/exercise2_9.m
+++ b/lab2/exercise2_9.m
@@ -0,0 +1,3 @@
 axes(handles.axes1);
 [X,Y,Z]=sphere(25);
 mesh(X,Y,2*(Z+1));
--- a/lab2/fn.m
+++ b/lab2/fn.m
@@ -0,0 +1,20 @@
 function t=fn(n);
 m=3;
 t=1:n;
 a=1;
 j=1;
 ind=0;
 while a<n
    while j<m
        ind =ind + 1;
        if ind > length(t)
            ind=1;
        end
        j=j+1;
    end
    t(ind)=[]
    ind=ind-1;
    j=1;
    a=a+1;
 end
 t
--- a/lab2/pmzbfs.m
+++ b/lab2/pmzbfs.m
@@ -0,0 +1,10 @@
 function [raf,jl]=pmzbfs(x1,y1,x2,y2)
 detx=x2-x1;dety=y2-y1;
 faw1=atan(dety/detx);
 j1=sqrt(detx*detx+dety*dety);
 if detx<0
    raf=faw1+pi;
 end
 if (detx>0)*(det<0)
    raf=faw1+2*pi;
 end
--- a/lab2/rad2deg.m
+++ b/lab2/rad2deg.m
@@ -0,0 +1,7 @@
 function jdeg=rad2deg(rad)
 rad=rad*180/pi;
 deg=fix(rad);
 xsbf=(rad-deg)*60;
 degf=fix(xsbf);
 degm=(xsbf-degf)*60;
 jdeg=deg+degf/100.0+degm/10000.0;
--- a/lab3/createfigure.m
+++ b/lab3/createfigure.m
@@ -0,0 +1,49 @@
 function createfigure(X1, Y1, xdata1, ydata1, zdata1)
 %CREATEFIGURE(X1, Y1, xdata1, ydata1, zdata1)
 %  X1:  plot x 数据的向量
 %  Y1:  plot y 数据的向量
 %  XDATA1:  surface xdata
 %  YDATA1:  surface ydata
 %  ZDATA1:  surface zdata
 %  由 MATLAB 于 17-Nov-2025 11:39:30 自动生成
 % 创建 figure
 figure1 = figure('PaperSize',[20.99999864 29.69999902]);
 % 创建 axes
 axes1 = axes('Parent',figure1,...
    'Position',[0.570340909090909 0.0936507936507937 0.318944805194805 0.831349206349211]);
 hold(axes1,'on');
 % 创建 plot
 plot(X1,Y1,'DisplayName','data1','Parent',axes1);
 % 取消以下行的注释以保留坐标区的 X 范围
 % xlim(axes1,[-1.37272865846885 1.35932516299143]);
 % 取消以下行的注释以保留坐标区的 Y 范围
 % ylim(axes1,[0.35208977067959 1.03510322604466]);
 box(axes1,'on');
 hold(axes1,'off');
 % 创建 legend
 legend1 = legend(axes1,'show');
 set(legend1,...
    'Position',[0.666574619538538 0.424688172043011 0.139880952380952 0.0428571428571429]);
 % 创建 colorbar
 colorbar(axes1);
 % 创建 axes
 axes2 = axes('Parent',figure1,...
    'Position',[0.065714222135995 0.11 0.393012722609596 0.625290174459612]);
 hold(axes2,'on');
 % 创建 surf
 surf(xdata1,ydata1,zdata1,'Parent',axes2);
 % 创建 title
 title({'图一-图二'});
 view(axes2,[-37.5 30]);
 grid(axes2,'on');
 hold(axes2,'off');
--- a/lab3/exercise3_1.m
+++ b/lab3/exercise3_1.m
@@ -0,0 +1,8 @@
 % 第一题
 A=[3,4,-7,-12;5,-7,4,2;1,0,8,-5;-6,5,-2,10];
 B=[4;-3;9;-8];
 % 系数矩阵的秩
 rank(A)
 % 方程的解
 C = A\B
--- a/lab3/exercise3_2.m
+++ b/lab3/exercise3_2.m
@@ -0,0 +1,6 @@
 % 练习3 第二题
 x=-10:1:10;
 y=-10:1:10;
 [X,Y]=meshgrid(x,y);
 Z=sin(sqrt(X.^2+Y.^2))./(sqrt(X.^2+Y.^2));
 surf(X,Y,Z)
--- a/lab3/exercise3_3.m
+++ b/lab3/exercise3_3.m
@@ -0,0 +1,7 @@
 num=[1];
 den=[1 2 2 1];
 sys=tf(num,den);
 figure(1); pzmap(sys); title('零极点图');
 figure(2); impulse(sys);
 w=0:0.1:10*pi;
 figure(3); freqs(num,den,w)
--- a/lab3/exercise3_4.m
+++ b/lab3/exercise3_4.m
@@ -0,0 +1,10 @@
 subplot(2,2,2);
 x=-pi/2:pi/10:pi/2;
 y=sqrt(cos(x));
 plot(x,y);
 subplot(2,2,3);
 x=-2:0.1:2;
 y=-4:0.1:4;
 [x,y]=meshgrid(x,y);
 z=x.^2/4+y.^2/16;
 surf(x,y,z)
--- a/lab3/lab3.m
+++ b/lab3/lab3.m
@@ -0,0 +1,42 @@
 % 实验3
 % 读取数据
 [filename1,p1]=uigetfile('*.txt', '选择尼康全站仪坐标文件名');
 fp=fopen(strcat(p1,filename1),'r');
 i=1;bss=[];
 while ~feof(fp)
    line=fgetl(fp);
    data=findstr(line,',');
    bss(i).dh=line(1:data(1)-1); 
    bss(i).x=str2num(line(data(1)+1:data(2)-1));
    bss(i).y=str2num(line(data(2)+1:data(3)-1));
    bss(i).h=str2num(line(data(3)+1:data(4)-1));
    bss(i).dm=line(data(4)+1:end);
    i=i+1;
 end
 fclose(fp);
 % 计算国家坐标系的坐标
 a=3976223.453;b=39512553.524;rad=deg2rad(0.433267);
 c=cos(rad);d=-sin(rad);lmd=1.000034336;
 m=i-1;gjzb=[]; 
 for i=1:m
    gjzb(i).dh=bss(i).dh;
    gjzb(i).dm=bss(i).dm;
    gjzb(i).h=bss(i).h;
    gjzb(i).x=a+lmd*(c*bss(i).x-d*bss(i).y);
    gjzb(i).y=b+lmd*(d*bss(i).x+c*bss(i).y);
 end
 % 输出数据
 [filename2,p2]=uigetfile('*.txt', '输出文件');
 fn=fopen(strcat(p2,filename2),'w');
 fprintf(fn,'%s\n\n','   点名       X(m)        Y(m)     H(mm)   code');
 fclose(fp);fn=fopen(strcat(p2,filename2),'a');
 for i=1:m
    fprintf(fn,'%8s', gjzb(i).dh);
    fprintf(fn,'%15.3f', gjzb(i).x);
    fprintf(fn,'%16.3f', gjzb(i).y);
    fprintf(fn,'%10.3f', gjzb(i).h);
    fprintf(fn,'%8s\n', strcat('   ',gjzb(i).dm));
 end
 fclose(fn);
--- a/lab3/nikon.txt
+++ b/lab3/nikon.txt
@@ -0,0 +1,7 @@
 3,49510.3110,80362.3190,405.8240,s50
 63,49488.9080,80426.0080,408.8490,S77
 164,49461.2960,80462.3610,408.9950,S77
 165,49457.2500,80485.8770,409.4490,S81
 166,49476.6650,80395.8870,408.1090,S66
 167,49475.1380,80398.7300,408.1570,S77
 298,49465.2360,80593.9700,415.1290,S99
--- a/lab3/untitled.jpg
+++ b/lab3/untitled.jpg
--- a/lab3/zhuanhuan.txt
+++ b/lab3/zhuanhuan.txt
@@ -0,0 +1,9 @@
   点名       X(m)        Y(m)     H(mm)   code
       3    4026749.416    39592285.024   405.824     s50
      63    4026728.820    39592348.981   408.849     S77
     164    4026701.670    39592385.683   408.995     S77
     165    4026697.922    39592409.249   409.449     S81
     166    4026716.196    39592319.017   408.109     S66
     167    4026714.706    39592321.879   408.157     S77
     298    4026707.277    39592517.236   415.129     S99
--- a/lab4/exercise4_1.m
+++ b/lab4/exercise4_1.m
@@ -0,0 +1,10 @@
 c = input('请输入一个字符：', 's');
 if c >= 'A' && c <= 'Z'
    disp(char(abs(c) + abs('a') - abs('A')));
 elseif c >= 'a' && c <= 'z'
    disp(char(abs(c) - abs('a') + abs('A')));
 elseif c >= '0' && c <= '9'
    disp(abs(c) - abs('0'));
 else
    disp(c);
 end
--- a/lab4/exercise4_10.m
+++ b/lab4/exercise4_10.m
@@ -0,0 +1,6 @@
 mysum=0,i=1;
 while(i<=100)
    mysum=mysum+i
    i=i+1 ;
 end
 mysum
--- a/lab4/exercise4_11.m
+++ b/lab4/exercise4_11.m
@@ -0,0 +1,13 @@
 A=[1 2 3;4 5 6;7 8 9];
 [r,c]=size(A);
 % 判断并把A中大于8和小于2的元素全部调整为0
 for i=1:1:r
    for j=1:1:c
        if (A(i,j)>8 || A(i,j)<2)
            A(i,j)=0;
        end
    end
 end
 % 改写
 b=(A <= 8 & A >= 2); % 判断A中小于等于8和大于等于2的元素，结果是逻辑值0/1
 A=A.*b %实现A中大于8和小于2的元素全部调整为0，基于矩阵的点乘
--- a/lab4/exercise4_12.m
+++ b/lab4/exercise4_12.m
@@ -0,0 +1,5 @@
 x = 0:0.05:2;
 y = diag(f(x).*f(x+2));
 plot(x,y);
 xlabel('\bfx');
 ylabel('\bfy');
--- a/lab4/exercise4_13.m
+++ b/lab4/exercise4_13.m
@@ -0,0 +1,8 @@
 subplot(2,2,2);
 x=linspace(-pi/2,pi/2,100);
 y=sqrt(cos(x));
 plot(x,y);
 subplot(2,2,3);
 x=linspace(-2,2);
 y=linspace(-4,4);
 ezsurfc('x.^2/4+y.^2/16')
--- a/lab4/exercise4_14.m
+++ b/lab4/exercise4_14.m
@@ -0,0 +1,9 @@
 A=input('请输入一个向量');
 [m,n]=size(A);
 min=A(1,n);
 for i=1:n
    if min>A(1,i)
        min=A(1,i);
    end
 end
 disp(min)
--- a/lab4/exercise4_15.m
+++ b/lab4/exercise4_15.m
@@ -0,0 +1,6 @@
 a=[2,3,1,2;1,3,0,1;1,-1,1,8;7,1,-2,2];
 b=[8,6,1,5]';
 ra=rank(a);
 rb=rank([a,b]);
 det(a);
 xx=a\b
--- a/lab4/exercise4_16.m
+++ b/lab4/exercise4_16.m
@@ -0,0 +1,9 @@
 t=linspace(0,4*pi,20);
 y1=sin(t);
 y2=2*cos(2*t);
 plot(t,y1,'k-');
 text(1.2,sin(1.2),'y1 \leftarrow','FontSize',12)
 hold on;
 plot(t,y2,'r--o');
 text(6,1.5,'y2 \leftarrow','FontSize',12);
 title('y1 and y2');
--- a/lab4/exercise4_2.m
+++ b/lab4/exercise4_2.m
@@ -0,0 +1,6 @@
 a=input('a=?');
 b=input('b=?');
 c=input('c=?');
 d=b*b-4*a*c;
 x=[(-b+sqrt(d))/(2*a),(-b-sqrt(d))/(2*a)]; 
 disp(['x1 =',num2str(x(1)),' ,x2=',num2str(x(2))]);
--- a/lab4/exercise4_3.m
+++ b/lab4/exercise4_3.m
@@ -0,0 +1,7 @@
 x=input('请输入x的值:');
 if x==10
    y=cos(x+1)+sqrt(x*x+1);
 else
    y=(3^(1/2))*sqrt(x+sqrt(x));
 end
 y
--- a/lab4/exercise4_4.m
+++ b/lab4/exercise4_4.m
@@ -0,0 +1,6 @@
 s=0;
 a=[12,13,14;15,16,17;18,19,20];
 for k=a
    s=s+k;
 end
 disp(s');
--- a/lab4/exercise4_5.m
+++ b/lab4/exercise4_5.m
@@ -0,0 +1,9 @@
 k=0;
 for n=100:200
    if rem(n,21)~=0
        k=k+1;
    continue
    end
 break;
 end
 k
--- a/lab4/exercise4_7.m
+++ b/lab4/exercise4_7.m
@@ -0,0 +1,9 @@
 x=-2:0.2:2;
 y=x.^2;
 plot(x,y)
 str1 = num2str(min(x));
 %数字转化为字符串
 str2 = num2str(max(x)); 
 %数字转化为字符串
 out = ['Value of f from ''str1'' to ''str2'' '];
 xlabel(out);
--- a/lab4/exercise4_8.m
+++ b/lab4/exercise4_8.m
@@ -0,0 +1,13 @@
 s1=0;s2=0;n1 =0;n2=0 ;
 x=[1,-4,-8,3,10,-9,7,-3,10, 8,-5,-2,2,0];
 m=length(x);
 for i=1:m
    if x(i)<0
        s1=s1+x(i);
        n1=n1+1;
    else
        s2=s2+x(i);
        n2=n2+1;
    end
 end
 s1,n1 ,s2,n2,m
--- a/lab4/exercise4_9.m
+++ b/lab4/exercise4_9.m
@@ -0,0 +1,4 @@
 A=[1,2;3,4];B=[1,2;1,4];
 C= A*B
 D= A+B
 E= A.*B
--- a/lab4/f.m
+++ b/lab4/f.m
@@ -0,0 +1,8 @@
 function y=f(x)
 if x<=2
    y=0.5*x;
 elseif x>6
    y=0.5;
 else
    y =1.5-0.25*x;
 end
--- a/lab4/factor.m
+++ b/lab4/factor.m
@@ -0,0 +1,6 @@
 function f=factor(n)
 if n<=1
    f=1;
 else
    f=factor(n-1)*n;
 end
--- a/lab5/all-gps.txt
+++ b/lab5/all-gps.txt
--- a/lab5/exercise5_1.m
+++ b/lab5/exercise5_1.m
@@ -0,0 +1,8 @@
 i
 j
 eps
 inf
 nan
 pi
 realmax
 realmin
--- a/lab5/exercise5_7.m
+++ b/lab5/exercise5_7.m
@@ -0,0 +1,8 @@
 x=linspace(-2*pi,2*pi,21);
 y=linspace(-1.5*pi,1.5*pi,31);
 [xx,yy]=meshgrid(x,y);
 zz=sin(xx/2).*cos(yy);
 subplot(1,2,1)
 surf(xx,yy,zz);axis image;
 subplot(1,2,2)
 contour(xx,yy,zz);axis image;
--- a/lab5/exercise5_8.m
+++ b/lab5/exercise5_8.m
@@ -0,0 +1,12 @@
 x=0:2:4*pi;
 y=sin(x).*exp(-x/5);
 xx=0:0.1:4*pi;
 yya=interp1(x,y,xx,'nearest');
 yyb=interp1(x,y,xx,'linear');
 yyc=interp1(x,y,xx,'spline');
 yyd=interp1(x,y,xx,'cubic');
 yye=polyval(polyfit(x,y,6),x);
 plot(xx,yya,xx,yyb,xx,yyd,x,y,'r*');
 legend('nearest','linear','spline','cubic','source');
 grid on
 title('2007***07**.zhang')
--- a/lab5/lab6.m
+++ b/lab5/lab6.m
@@ -0,0 +1,42 @@
 clear all;
 [filename1,p1]=uigetfile('*.txt','选择尼康全站仪坐标文件名');
 fp=fopen(strcat(p1,filename1),'r');
 i=1;zb=[];
 while ~feof(fp)
    line=fgetl(fp);
    my=findstr(line,',');
    zb(i).dh=line(1:my(1)-1); % 点号
    zb(i).x=str2num(line(my(1)+1:my(2)-1)); % X坐标
    zb(i).y=str2num(line(my(2)+1:my(3)-1)); % Y坐标
    zb(i).h=str2num(line(my(3)+1:my(4)-1)); % h坐标
    zb(i).dm=line(my(4)+1:end); % 点名
    i = i + 1;
 end
 fclose(fp);
 % 计算国家坐标系坐标
 a=3976223.453;
 b=39512553.524;
 rad=deg2rad(0.433267);
 c=cos(rad);d=-sin(rad);lmd=1.000034336;
 m=i-1;
 gjzb=[];
 for i=1:m;
    gjzb(i).dh=zb(i).dh;
    gjzb(i).dm=zb(i).dm;
    gjzb(i).h=zb(i).h;
    gjzb(i).x=a+lmd*(c*zb(1).x-d*zb(i).y);
    gjzb(i).y=b+lmd*(d*zb(1).x+d*zb(i).y);
 end
 [filename2,p2]=uigetfile('*.txt','选择输出文件名');
 fn=fopen(strcat(p2,filename2),'w');
 fprintf(fn,'%s\n\n','点名     X(m)    Y(m)    H(mm)   code');
 for i=1:m
    fprintf(fn,'%8s',gjzb(i).dh);
    fprintf(fn,'%15.3f',gjzb(i).x);
    fprintf(fn,'%16.3f',gjzb(i).y);
    fprintf(fn,'%10.f',gjzb(i).h);
    fprintf(fn,'%8s\n',gjzb(i).dm);
 end
 fclose(fn);
--- a/lab5/plotRaram.m
+++ b/lab5/plotRaram.m
@@ -0,0 +1,4 @@
 t=linspace(0,4*pi);
 x=sin(t);
 y=1-cos(t)+t/10;
 plot(x,y,'-or');
--- a/lab5/regPolygon.m
+++ b/lab5/regPolygon.m
@@ -0,0 +1,11 @@
 function y=regPolygon(n)
 R=1;
 t=0:0.01:2*pi;
 x=R*cos(t);
 y=R*sin(t);
 m=linspace(pi/2,5/2*pi,n+1);
 xz=R*cos(m);
 yz=R*sin(m);
 hold on
 plot(x,y,xz,yz);
 axis equal;
--- a/lab5/result.txt
+++ b/lab5/result.txt
--- a/lab6/exercise6_1.m
+++ b/lab6/exercise6_1.m
@@ -0,0 +1,4 @@
 A=[0,9,6;1,3,0];
 B=[1,4,3;1,5,0];
 A&B
 A./B
--- a/lab6/exercise6_10.m
+++ b/lab6/exercise6_10.m
@@ -0,0 +1,3 @@
 syms x;
 eq1=x^4-4*x^3+12*x-9==0;
 x=solve(eq1,x)
--- a/lab6/exercise6_8.m
+++ b/lab6/exercise6_8.m
@@ -0,0 +1,8 @@
 for k=1:10
    if k>6
        break
    else
        arry(k)=k;
    end
 end
 disp(arry);
--- a/lab6/exercise6_9.m
+++ b/lab6/exercise6_9.m
@@ -0,0 +1,7 @@
 i=2;
 a=2i;
 b=2*i;
 c=2*sqrt(-1);
 a
 b
 c
--- a/lab6/exercise6_c_1.m
+++ b/lab6/exercise6_c_1.m
@@ -0,0 +1,4 @@
 A=[1,2,3;4:6;7:9];
 C=[A;[10,11,12]];
 D=C(1:3,[2,3]);
 E=C(2,[1,2]);
--- a/lab6/exercise6_c_2.m
+++ b/lab6/exercise6_c_2.m
@@ -0,0 +1,9 @@
 x=[0,1,0,2,0,3,0,4];
 for k=1:8
    if x(k)==0
        x(k)=k;
    else
        x(k)=2*k+1;
    end
 end
 disp(x)
--- a/lab6/exercise6_c_3.m
+++ b/lab6/exercise6_c_3.m
@@ -0,0 +1,3 @@
 syms a b c x;
 s=a*x^2+b*x+c;
 solve(s)
--- a/Show More
+++ b/Show More
		`@@ -0,0 +1,2 @@`
							`A=[3,0,0,0;0,0,0,0;0,0,0,0;0,0,0,0;0,0,0,7];`
							`B=sprank(A)`
		`@@ -0,0 +1,2 @@`
							`function radv=dms2rad(dms)`
							`radv=dms*pi/180;`
		`@@ -0,0 +1,2 @@`
							`hpop=uicontrol(gcf,"Style","popup","String",'red\|blue\|green\|yellow\|white','Position',[100,100,100,80],...`
							`'Callback',['cbcol=[''R'',''B'',''G'',''Y''];','set(gcf,''Color'',cbcol(get(hpop,''Value'')))']);`