数学建模案例MATLAB实用程序百例

MATLAB实用程序百例

实例1：三角函数曲线（1） function shili01 h0=figure('toolbar','none',...

'position',[198 56 350 300],... 'name','实例01'); h1=axes('parent',h0,...

'visible','off'); x=-pi:0.05:pi; y=sin(x); plot(x,y);

xlabel('自变量X'); ylabel('函数值Y'); title('SIN( )函数曲线'); grid on

实例2：三角函数曲线（2） function shili02 h0=figure('toolbar','none',...

'position',[200 150 450 350],... 'name','实例02'); x=-pi:0.05:pi; y=sin(x)+cos(x);

plot(x,y,'-*r','linewidth',1); grid on

xlabel('自变量X'); ylabel('函数值Y'); title('三角函数');

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/1.txt[2010/5/14 1:14:29]

实例3：图形的叠加 function shili03

h0=figure('toolbar','none',...

'position',[200 150 450 350],... 'name','实例03'); x=-pi:0.05:pi; y1=sin(x); y2=cos(x); plot(x,y1,...

'-*r',... x,y2,... '--og');

grid on xlabel('自变量X');

ylabel('函数值Y'); title('三角函数');

实例4：双y轴图形的绘制 function shili04 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例04'); x=0:900;a=1000;b=0.005; y1=2*x; y2=cos(b*x);

[haxes,hline1,hline2]=plotyy(x,y1,x,y2,'semilogy','plot'); axes(haxes(1))

ylabel('semilog plot');

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/1.txt[2010/5/14 1:14:29]

axes(haxes(2)) ylabel('linear plot');

实例5：单个轴窗口显示多个图形 function shili05 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例05'); t=0:pi/10:2*pi; [x,y]=meshgrid(t); subplot(2,2,1) plot(sin(t),cos(t)) axis equal subplot(2,2,2) z=sin(x)-cos(y); plot(t,z)

axis([0 2*pi -2 2]) subplot(2,2,3) h=sin(x)+cos(y); plot(t,h)

axis([0 2*pi -2 2]) subplot(2,2,4) g=(sin(x).^2)-(cos(y).^2); plot(t,g)

axis([0 2*pi -1 1])

实例6：图形标注 function shili06

h0=figure('toolbar','none',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/1.txt[2010/5/14 1:14:29]

'position',[200 150 450 400],... 'name','实例06'); t=0:pi/10:2*pi; h=plot(t,sin(t));

xlabel('t=0到2\\pi','fontsize',16); ylabel('sin(t)','fontsize',16);

title('\\it{从 0to2\\pi 的正弦曲线}','fontsize',16) x=get(h,'xdata'); y=get(h,'ydata'); imin=find(min(y)==y); imax=find(max(y)==y); text(x(imin),y(imin),...

['\\leftarrow最小值=',num2str(y(imin))],... 'fontsize',16) text(x(imax),y(imax),...

['\\leftarrow最大值=',num2str(y(imax))],... 'fontsize',16)

实例7：条形图形 function shili07

h0=figure('toolbar','none',...

'position',[200 150 450 350],... 'name','实例07');

tiao1=[562 548 224 545 41 445 745 512]; tiao2=[47 48 57 58 54 52 65 48]; t=0:7;

bar(t,tiao1) xlabel('X轴'); ylabel('TIAO1值');

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/1.txt[2010/5/14 1:14:29]

h1=gca; h2=axes('position',get(h1,'position')); plot(t,tiao2,'linewidth',3)

set(h2,'yaxislocation','right','color','none','xticklabel',[])

实例8：区域图形 function shili08

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例08');

x=91:95;

profits1=[88 75 84 93 77]; profits2=[51 64 54 56 68]; profits3=[42 54 34 25 24]; profits4=[26 38 18 15 4];

area(x,profits1,'facecolor',[0.5 0.9 0.6],... 'edgecolor','b',... 'linewidth',3) hold on

area(x,profits2,'facecolor',[0.9 0.85 0.7],... 'edgecolor','y',... 'linewidth',3) hold on

area(x,profits3,'facecolor',[0.3 0.6 0.7],... 'edgecolor','r',... 'linewidth',3) hold on

area(x,profits4,'facecolor',[0.6 0.5 0.9],... 'edgecolor','m',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/1.txt[2010/5/14 1:14:29]

'linewidth',3) hold off

set(gca,'xtick',[91:95])

set(gca,'layer','top') gtext('\\leftarrow第一季度销量') gtext('\\leftarrow第二季度销量') gtext('\\leftarrow第三季度销量') gtext('\\leftarrow第四季度销量') xlabel('年','fontsize',16); ylabel('销售量','fontsize',16);

实例9：饼图的绘制 function shili09

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例09'); t=[54 21 35;

68 54 35; 45 25 12; 48 68 45; 68 54 69]; x=sum(t); h=pie(x); textobjs=findobj(h,'type','text'); str1=get(textobjs,{'string'}); val1=get(textobjs,{'extent'}); oldext=cat(1,val1{:}); names={'商品一：';'商品二：';'商品三：'}; str2=strcat(names,str1);

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/1.txt[2010/5/14 1:14:29]

set(textobjs,{'string'},str2) val2=get(textobjs,{'extent'}); newext=cat(1,val2{:});

offset=sign(oldext(:,1)).*(newext(:,3)-oldext(:,3))/2; pos=get(textobjs,{'position'}); textpos=cat(1,pos{:}); textpos(:,1)=textpos(:,1)+offset; set(textobjs,{'position'},num2cell(textpos,[3,2]))

实例10：阶梯图 function shili10

h0=figure('toolbar','none',...

'position',[200 150 450 400],... 'name','实例10'); a=0.01; b=0.5; t=0:10;

f=exp(-a*t).*sin(b*t); stairs(t,f) hold on plot(t,f,':*') hold off

glabel='函数e^{-(\\alpha*t)}sin\\beta*t的阶梯图'; gtext(glabel,'fontsize',16) xlabel('t=0:10','fontsize',16) axis([0 10 -1.2 1.2])

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/1.txt[2010/5/14 1:14:29]

实例11：枝干图 function shili11

h0=figure('toolbar','none',...

'position',[200 150 450 350],... 'name','实例11'); x=0:pi/20:2*pi; y1=sin(x); y2=cos(x); h1=stem(x,y1+y2); hold on

h2=plot(x,y1,'^r',x,y2,'*g'); hold off h3=[h1(1);h2];

legend(h3,'y1+y2','y1=sin(x)','y2=cos(x)') xlabel('自变量X');

ylabel('函数值Y'); title('正弦函数与余弦函数的线性组合');

实例12：罗盘图 function shili12

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例12'); winddirection=[54 24 65 84

256 12 235 62 125 324 34 254]; windpower=[2 5 5 3

6 8 12 7 6 14 10 8];

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/2.txt[2010/5/14 1:14:29]

rdirection=winddirection*pi/180; [x,y]=pol2cart(rdirection,windpower); compass(x,y); desc={'风向和风力', '北京气象台', '10月1日0：00到', '10月1日12：00'}; gtext(desc)

实例13：轮廓图 function shili13

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例13'); [th,r]=meshgrid((0:10:360)*pi/180,0:0.05:1); [x,y]=pol2cart(th,r); z=x+i*y;

f=(z.^4-1).^(0.25); contour(x,y,abs(f),20) axis equal

xlabel('实部','fontsize',16); ylabel('虚部','fontsize',16); h=polar([0 2*pi],[0 1]); delete(h) hold on contour(x,y,abs(f),20)

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/2.txt[2010/5/14 1:14:29]

实例14：交互式图形 function shili14

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例14'); axis([0 10 0 10]); hold on x=[]; y=[]; n=0;

disp('单击鼠标左键点取需要的点'); disp('单击鼠标右键点取最后一个点'); but=1; while but==1

[xi,yi,but]=ginput(1); plot(xi,yi,'bo') n=n+1;

disp('单击鼠标左键点取下一个点'); x(n,1)=xi; y(n,1)=yi; end t=1:n; ts=1:0.1:n; xs=spline(t,x,ts); ys=spline(t,y,ts); plot(xs,ys,'r-'); hold off

实例14：交互式图形

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/2.txt[2010/5/14 1:14:29]

function shili14 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例14'); axis([0 10 0 10]); hold on x=[]; y=[]; n=0;

disp('单击鼠标左键点取需要的点'); disp('单击鼠标右键点取最后一个点'); but=1; while but==1

[xi,yi,but]=ginput(1); plot(xi,yi,'bo') n=n+1;

disp('单击鼠标左键点取下一个点'); x(n,1)=xi; y(n,1)=yi; end t=1:n; ts=1:0.1:n; xs=spline(t,x,ts); ys=spline(t,y,ts); plot(xs,ys,'r-'); hold off

实例15：变换的傅立叶函数曲线 function shili15

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/2.txt[2010/5/14 1:14:29]

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例15'); axis equal m=moviein(20,gcf);

set(gca,'nextplot','replacechildren') h=uicontrol('style','slider','position',...

[100 10 500 20],'min',1,'max',20) for j=1:20

plot(fft(eye(j+16))) set(h,'value',j) m(:,j)=getframe(gcf); end clf;

axes('position',[0 0 1 1]); movie(m,30)

实例16：劳伦兹非线形方程的无序活动 function shili15 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例15'); axis equal m=moviein(20,gcf);

set(gca,'nextplot','replacechildren') h=uicontrol('style','slider','position',...

[100 10 500 20],'min',1,'max',20) for j=1:20

plot(fft(eye(j+16)))

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/2.txt[2010/5/14 1:14:29]

set(h,'value',j) m(:,j)=getframe(gcf);

end clf;

axes('position',[0 0 1 1]); movie(m,30)

实例17：填充图 function shili17

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例17'); t=(1:2:15)*pi/8; x=sin(t); y=cos(t); fill(x,y,'r') axis square off text(0,0,'STOP',...

'color',[1 1 1],... 'fontsize',50,... 'horizontalalignment','center')

实例18：条形图和阶梯形图 function shili18 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例18'); subplot(2,2,1) x=-3:0.2:3;

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/2.txt[2010/5/14 1:14:29]

y=exp(-x.*x); bar(x,y)

title('2-D Bar Chart') subplot(2,2,2) x=-3:0.2:3; y=exp(-x.*x); bar3(x,y,'r')

title('3-D Bar Chart') subplot(2,2,3) x=-3:0.2:3; y=exp(-x.*x); stairs(x,y) title('Stair Chart') subplot(2,2,4) x=-3:0.2:3; y=exp(-x.*x); barh(x,y)

title('Horizontal Bar Chart')

实例19：三维曲线图 function shili19

h0=figure('toolbar','none',...

'position',[200 150 450 400],... 'name','实例19'); subplot(2,1,1) x=linspace(0,2*pi); y1=sin(x); y2=cos(x); y3=sin(x)+cos(x);

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/2.txt[2010/5/14 1:14:29]

z1=zeros(size(x)); z2=0.5*z1; z3=z1; plot3(x,y1,z1,x,y2,z2,x,y3,z3) grid on xlabel('X轴'); ylabel('Y轴'); zlabel('Z轴'); title('Figure1:3-D Plot') subplot(2,1,2) x=linspace(0,2*pi); y1=sin(x); y2=cos(x); y3=sin(x)+cos(x); z1=zeros(size(x)); z2=0.5*z1; z3=z1; plot3(x,z1,y1,x,z2,y2,x,z3,y3) grid on xlabel('X轴'); ylabel('Y轴'); zlabel('Z轴'); title('Figure2:3-D Plot')

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/2.txt[2010/5/14 1:14:29]

实例20：图形的隐藏属性 function shili20 h0=figure('toolbar','none',...

'position',[200 150 450 300],... 'name','实例20'); subplot(1,2,1) [x,y,z]=sphere(10); mesh(x,y,z) axis off title('Figure1:Opaque') hidden on subplot(1,2,2) [x,y,z]=sphere(10); mesh(x,y,z) axis off title('Figure2:Transparent') hidden off

实例21PEAKS函数曲线 function shili21

h0=figure('toolbar','none',...

'position',[200 100 450 450],... 'name','实例21'); [x,y,z]=peaks(30); subplot(2,1,1) x=x(1,:); y=y(:,1);

i=find(y>0.8&y<1.2); j=find(x>-0.6&x<0.5);

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/3.txt[2010/5/14 1:14:30]

z(i,j)=nan*z(i,j); surfc(x,y,z) xlabel('X轴'); ylabel('Y轴');

zlabel('Z轴'); title('Figure1:surfc函数形成的曲面')

subplot(2,1,2) x=x(1,:); y=y(:,1);

i=find(y>0.8&y<1.2); j=find(x>-0.6&x<0.5); z(i,j)=nan*z(i,j); surfl(x,y,z) xlabel('X轴'); ylabel('Y轴');

zlabel('Z轴'); title('Figure2:surfl函数形成的曲面')

实例22：片状图 function shili22

h0=figure('toolbar','none',...

'position',[200 150 550 350],... 'name','实例22'); subplot(1,2,1) x=rand(1,20); y=rand(1,20); z=peaks(x,y*pi); t=delaunay(x,y);

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/3.txt[2010/5/14 1:14:30]

trimesh(t,x,y,z) hidden off

title('Figure1:Triangular Surface Plot'); subplot(1,2,2) x=rand(1,20); y=rand(1,20); z=peaks(x,y*pi); t=delaunay(x,y); trisurf(t,x,y,z)

title('Figure1:Triangular Surface Plot');

实例23：视角的调整 function shili23

h0=figure('toolbar','none',...

'position',[200 150 450 350],... 'name','实例23'); x=-5:0.5:5;

[x,y]=meshgrid(x); r=sqrt(x.^2+y.^2)+eps; z=sin(r)./r; subplot(2,2,1) surf(x,y,z) xlabel('X-axis') ylabel('Y-axis') zlabel('Z-axis') title('Figure1') view(-37.5,30) subplot(2,2,2) surf(x,y,z)

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/3.txt[2010/5/14 1:14:30]

xlabel('X-axis') ylabel('Y-axis') zlabel('Z-axis') title('Figure2') view(-37.5+90,30) subplot(2,2,3) surf(x,y,z) xlabel('X-axis') ylabel('Y-axis') zlabel('Z-axis') title('Figure3') view(-37.5,60) subplot(2,2,4) surf(x,y,z) xlabel('X-axis') ylabel('Y-axis') zlabel('Z-axis') title('Figure4') view(180,0)

实例24：向量场的绘制 function shili24

h0=figure('toolbar','none',...

'position',[200 150 450 350],... 'name','实例24'); subplot(2,2,1) z=peaks; ribbon(z) title('Figure1')

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/3.txt[2010/5/14 1:14:30]

subplot(2,2,2) [x,y,z]=peaks(15); [dx,dy]=gradient(z,0.5,0.5); contour(x,y,z,10) hold on quiver(x,y,dx,dy) hold off title('Figure2') subplot(2,2,3) [x,y,z]=peaks(15);

[nx,ny,nz]=surfnorm(x,y,z); surf(x,y,z) hold on quiver3(x,y,z,nx,ny,nz) hold off title('Figure3') subplot(2,2,4) x=rand(3,5); y=rand(3,5); z=rand(3,5); c=rand(3,5); fill3(x,y,z,c) grid on title('Figure4')

实例25：灯光定位 function shili25

h0=figure('toolbar','none',...

'position',[200 150 450 250],...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/3.txt[2010/5/14 1:14:30]

'name','实例25'); vert=[1 1 1;1 2 1;

2 2 1;2 1 1; 1 1 2;1 2 2; 2 2 2;2 1 2]; fac=[1 2 3 4;2 6 7 3;

4 3 7 8;1 5 8 4; 1 2 6 5;5 6 7 8]; grid off sphere(36)

h=findobj('type','surface'); set(h,'facelighting','phong',...

'facecolor',... 'interp',...

'edgecolor',[0.4 0.4 0.4],... 'backfacelighting',... 'lit') hold on

patch('faces',fac,'vertices',vert,... 'facecolor','y'); light('position',[1 3 2]); light('position',[-3 -1 3]); material shiny axis vis3d off hold off

实例26：柱状图 function shili26

h0=figure('toolbar','none',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/3.txt[2010/5/14 1:14:30]

'position',[200 50 450 450],... 'name','实例26'); subplot(2,1,1) x=[5 2 1

8 7 3 9 8 6 5 5 5 4 3 2]; bar(x) xlabel('X轴');

ylabel('Y轴'); title('第一子图'); subplot(2,1,2) y=[5 2 1

8 7 3 9 8 6 5 5 5 4 3 2]; barh(y) xlabel('X轴');

ylabel('Y轴'); title('第二子图');

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/3.txt[2010/5/14 1:14:30]

实例27：设置照明方式 function shili27

h0=figure('toolbar','none',...

'position',[200 150 450 350],... 'name','实例27'); subplot(2,2,1) sphere shading flat camlight left camlight right lighting flat colorbar axis off title('Figure1') subplot(2,2,2) sphere shading flat camlight left camlight right lighting gouraud colorbar axis off title('Figure2') subplot(2,2,3) sphere shading interp camlight right camlight left lighting phong

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

colorbar axis off title('Figure3') subplot(2,2,4) sphere shading flat camlight left camlight right lighting none colorbar axis off title('Figure4')

实例28：羽状图 function shili28

h0=figure('toolbar','none',...

'position',[200 150 450 350],... 'name','实例28'); subplot(2,1,1) alpha=90:-10:0; r=ones(size(alpha)); m=alpha*pi/180; n=r*10; [u,v]=pol2cart(m,n); feather(u,v) title('羽状图') axis([0 20 0 10])

subplot(2,1,2) t=0:0.5:10;

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

x=0.05+i; y=exp(-x*t); feather(y)

title('复数矩阵的羽状图')

实例29：立体透视（1） function shili29

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例29'); [x,y,z]=meshgrid(-2:0.1:2,...

-2:0.1:2,... -2:0.1:2);

v=x.*exp(-x.^2-y.^2-z.^2); grid on for i=-2:0.5:2;

h1=surf(linspace(-2,2,20),...

linspace(-2,2,20),... zeros(20)+i); rotate(h1,[1 -1 1],30) dx=get(h1,'xdata'); dy=get(h1,'ydata'); dz=get(h1,'zdata'); delete(h1)

slice(x,y,z,v,[-2 2],2,-2) hold on slice(x,y,z,v,dx,dy,dz) hold off axis tight

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

view(-5,10) drawnow end

实例30：立体透视（2） function shili30

h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例30'); [x,y,z]=meshgrid(-2:0.1:2,...

-2:0.1:2,... -2:0.1:2);

v=x.*exp(-x.^2-y.^2-z.^2); [dx,dy,dz]=cylinder; slice(x,y,z,v,[-2 2],2,-2) for i=-2:0.2:2

h=surface(dx+i,dy,dz); rotate(h,[1 0 0],90) xp=get(h,'xdata'); yp=get(h,'ydata'); zp=get(h,'zdata'); delete(h) hold on hs=slice(x,y,z,v,xp,yp,zp); axis tight xlim([-3 3]) view(-10,35) drawnow delete(hs)

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

hold off

end

实例31：表面图形 function shili31

h0=figure('toolbar','none',...

'position',[200 150 550 250],... 'name','实例31'); subplot(1,2,1) x=rand(100,1)*16-8; y=rand(100,1)*16-8; r=sqrt(x.^2+y.^2)+eps; z=sin(r)./r;

xlin=linspace(min(x),max(x),33); ylin=linspace(min(y),max(y),33); [X,Y]=meshgrid(xlin,ylin); Z=griddata(x,y,z,X,Y,'cubic'); mesh(X,Y,Z) axis tight hold on

plot3(x,y,z,'.','Markersize',20) subplot(1,2,2) k=5; n=2^k-1;

theta=pi*(-n:2:n)/n; phi=(pi/2)*(-n:2:n)'/n; X=cos(phi)*cos(theta); Y=cos(phi)*sin(theta); Z=sin(phi)*ones(size(theta));

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

colormap([0 0 0;1 1 1]) C=hadamard(2^k); surf(X,Y,Z,C) axis square

实例32：沿曲线移动的小球 h0=figure('toolbar','none',...

'position',[198 56 408 468],... 'name','实例32'); h1=axes('parent',h0,... 'position',[0.15 0.45 0.7 0.5],... 'visible','on'); t=0:pi/24:4*pi; y=sin(t); plot(t,y,'b') n=length(t);

h=line('color',[0 0.5 0.5],...

'linestyle','.',... 'markersize',25,... 'erasemode','xor'); k1=uicontrol('parent',h0,...

'style','pushbutton',... 'position',[80 100 50 30],... 'string','开始',... 'callback',[...

'i=1;',... 'k=1;,',... 'm=0;,',... 'while 1,',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

'if k==0,',... 'break,',... 'end,',... 'if k~=0,',... 'set(h,''xdata'',t(i),''ydata'',y(i)),',... 'drawnow;,',... 'i=i+1;,',... 'if i>n,',... 'm=m+1;,',... 'i=1;,',... 'end,',... 'end,',... 'end']); k2=uicontrol('parent',h0,...

'style','pushbutton',... 'position',[180 100 50 30],... 'string','停止',... 'callback',[...

'k=0;,',...

'set(e1,''string'',m),',... 'p=get(h,''xdata'');,',... 'q=get(h,''ydata'');,',... 'set(e2,''string'',p);,',... 'set(e3,''string'',q)']); k3=uicontrol('parent',h0,...

'style','pushbutton',... 'position',[280 100 50 30],... 'string','关闭',... 'callback','close');

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

e1=uicontrol('parent',h0,... 'style','edit',...

'position',[60 30 60 20]); t1=uicontrol('parent',h0,...

'style','text',... 'string','循环次数',... 'position',[60 50 60 20]); e2=uicontrol('parent',h0,...

'style','edit',... 'position',[180 30 50 20]); t2=uicontrol('parent',h0,... 'style','text',...

'string','终点的X坐标值',... 'position',[155 50 100 20]); e3=uicontrol('parent',h0,... 'style','edit',... 'position',[300 30 50 20]); t3=uicontrol('parent',h0,... 'style','text',...

'string','终点的Y坐标值',... 'position',[275 50 100 20]);

实例33：曲线转换按钮 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例33'); x=0:0.5:2*pi; y=sin(x); h=plot(x,y);

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

grid on huidiao=[...

'if i==1,',... 'i=0;,',... 'y=cos(x);,',...

'delete(h),',... 'set(hm,''string'',''正弦函数''),',... 'h=plot(x,y);,',... 'grid on,',... 'else if i==0,',... 'i=1;,',...

'y=sin(x);,',... 'set(hm,''string'',''余弦函数''),',... 'delete(h),',... 'h=plot(x,y);,',... 'grid on,',... 'end,',... 'end'];

hm=uicontrol(gcf,'style','pushbutton',... 'string','余弦函数',... 'callback',huidiao); i=1;

set(hm,'position',[250 20 60 20]); set(gca,'position',[0.2 0.2 0.6 0.6]) title('按钮的使用') hold on

实例34：栅格控制按钮 h0=figure('toolbar','none',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

'position',[200 150 450 250],... 'name','实例34'); x=0:0.5:2*pi; y=sin(x); plot(x,y) huidiao1=[...

'set(h_toggle2,''value'',0),',... 'grid on,',... ];

huidiao2=[...

'set(h_toggle1,''value'',0),',... 'grid off,',... ];

h_toggle1=uicontrol(gcf,'style','togglebutton',... 'string','grid on',... 'value',0,...

'position',[20 45 50 20],... 'callback',huidiao1);

h_toggle2=uicontrol(gcf,'style','togglebutton',... 'string','grid off',... 'value',0,...

'position',[20 20 50 20],... 'callback',huidiao2);

set(gca,'position',[0.2 0.2 0.6 0.6]) title('开关按钮的使用')

实例35：编辑框的使用 h0=figure('toolbar','none',...

'position',[200 150 350 250],...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

'name','实例35'); f='Please input the letter'; huidiao1=[...

'g=upper(f);,',... 'set(h2_edit,''string'',g),',... ]; huidiao2=[...

'g=lower(f);,',... 'set(h2_edit,''string'',g),',... ];

h1_edit=uicontrol(gcf,'style','edit',... 'position',[100 200 100 50],... 'HorizontalAlignment','left',... 'string','Please input the letter',... 'callback','f=get(h1_edit,''string'');',... 'background','w',... 'max',5,... 'min',1); h2_edit=uicontrol(gcf,'style','edit',...

'HorizontalAlignment','left',... 'position',[100 100 100 50],... 'background','w',... 'max',5,... 'min',1); h1_button=uicontrol(gcf,'style','pushbutton',...

'string','小写变大写',... 'position',[100 45 100 20],... 'callback',huidiao1); h2_button=uicontrol(gcf,'style','pushbutton',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

'string','大写变小写',... 'position',[100 20 100 20],... 'callback',huidiao2);

实例36：弹出式菜单 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例36'); x=0:0.5:2*pi; y=sin(x); h=plot(x,y); grid on

hm=uicontrol(gcf,'style','popupmenu',... 'string',...

'sin(x)|cos(x)|sin(x)+cos(x)|exp(-sin(x))',... 'position',[250 20 50 20]); set(hm,'value',1) huidiao=[...

'v=get(hm,''value'');,',... 'switch v,',... 'case 1,',... 'delete(h),',... 'y=sin(x);,',... 'h=plot(x,y);,',... 'grid on,',... 'case 2,',... 'delete(h),',... 'y=cos(x);,',... 'h=plot(x,y);,',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

'grid on,',... 'case 3,',... 'delete(h),',... 'y=sin(x)+cos(x);,',... 'h=plot(x,y);,',... 'grid on,',... 'case 4,',... 'delete(h),',... 'y=exp(-sin(x));,',... 'h=plot(x,y);,',... 'grid on,',... 'end'];

set(hm,'callback',huidiao) set(gca,'position',[0.2 0.2 0.6 0.6]) title('弹出式菜单的使用') hold on

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/4.txt[2010/5/14 1:14:30]

实例37：滑标的使用 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例37'); [x,y]=meshgrid(-8:0.5:8); r=sqrt(x.^2+y.^2)+eps; z=sin(r)./r; h0=mesh(x,y,z); h1=axes('position',... [0.2 0.2 0.5 0.5],... 'visible','off'); htext=uicontrol(gcf,...

'units','points',... 'position',[20 30 45 15],... 'string','brightness',... 'style','text'); hslider=uicontrol(gcf,...

'units','points',...

'position',[10 10 300 15],... 'min',-1,... 'max',1,...

'style','slider',... 'callback',...

'brighten(get(hslider,''value''))');

实例38：多选菜单 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例38');

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/5.txt[2010/5/14 1:14:31]

[x,y]=meshgrid(-8:0.5:8); r=sqrt(x.^2+y.^2)+eps; z=sin(r)./r; h0=mesh(x,y,z); hlist=uicontrol(gcf,'style','listbox',...

'string','default|spring|summer|autumn|winter',... 'max',5,... 'min',1,...

'position',[20 20 80 100],... 'callback',[... 'k=get(hlist,''value'');,',... 'switch k,',... 'case 1,',...

'colormap default,',... 'case 2,',...

'colormap spring,',... 'case 3,',...

'colormap summer,',... 'case 4,',...

'colormap autumn,',... 'case 5,',...

'colormap winter,',... 'end']);

实例39：菜单控制的使用 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例39'); x=0:0.5:2*pi;

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/5.txt[2010/5/14 1:14:31]

y=cos(x); h=plot(x,y); grid on

set(gcf,'toolbar','none') hm=uimenu('label','example'); huidiao1=[...

'set(hm_gridon,''checked'',''on''),',... 'set(hm_gridoff,''checked'',''off''),',... 'grid on'];

huidiao2=[...

'set(hm_gridoff,''checked'',''on''),',... 'set(hm_gridon,''checked'',''off''),',... 'grid off'];

hm_gridon=uimenu(hm,'label','grid on',... 'checked','on',... 'callback',huidiao1);

hm_gridoff=uimenu(hm,'label','grid off',... 'checked','off',... 'callback',huidiao2);

实例40：UIMENU菜单的应用 h0=figure('toolbar','none',...

'position',[200 150 450 250],... 'name','实例40');

h1=uimenu(gcf,'label','函数'); h11=uimenu(h1,'label','轮廓图',... 'callback',[...

'set(h31,''checked'',''on''),',... 'set(h32,''checked'',''off''),',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/5.txt[2010/5/14 1:14:31]

'[x,y,z]=peaks;,',... 'contour3(x,y,z,30)']);

h12=uimenu(h1,'label','高斯分布',... 'callback',[...

'set(h31,''checked'',''on''),',... 'set(h32,''checked'',''off''),',... 'mesh(peaks);,',... 'axis tight']); h13=uimenu(h1,'label','Sinc函数',...

'callback',[... 'set(h31,''checked'',''on''),',... 'set(h32,''checked'',''off''),',... '[x,y]=meshgrid(-8:0.5:8);,',... 'r=sqrt(x.^2+y.^2)+eps;,',... 'z=sin(r)./r;,',... 'mesh(x,y,z)']);

h2=uimenu(gcf,'label','色彩'); hl2(1)=uimenu(h2,'label','Default',...

'checked','on',... 'callback',... [...

'set(hl2,''checked'',''off''),',... 'set(hl2(1),''checked'',''on''),',... 'colormap(''default'')']);

hl2(2)=uimenu(h2,'label','spring',... 'callback',... [...

'set(hl2,''checked'',''off''),',... 'set(hl2(2),''checked'',''on''),',...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/5.txt[2010/5/14 1:14:31]

'colormap(spring)']); hl2(3)=uimenu(h2,'label','Summer',...

'callback',... [...

'set(hl2,''checked'',''off''),',... 'set(hl2(3),''checked'',''on''),',... 'colormap(summer)']);

hl2(4)=uimenu(h2,'label','Autumn',... 'callback',... [...

'set(hl2,''checked'',''off''),',... 'set(hl2(4),''checked'',''on''),',... 'colormap(autumn)']);

hl2(5)=uimenu(h2,'label','Winter',... 'callback',... [...

'set(hl2,''checked'',''off''),',... 'set(hl2(5),''checked'',''on''),',... 'colormap(winter)']);

h3=uimenu(gcf,'label','坐标选项'); h31=uimenu(h3,'label','Axis on',...

'callback',... [...

'axis on,',... 'set(h31,''checked'',''on''),',... 'set(h32,''checked'',''off'')']); h32=uimenu(h3,'label','Axis off',...

'callback',... [...

file:///E|/Document/发展篇/M&M/竞赛篇/常用算法/matlab 实例/5.txt[2010/5/14 1:14:31]

本文来源：https://www.bwwdw.com/article/l2v.html