matlab 画图函数的实例

clc,clear all;close all;A=[1 2 3;4 5 6;7 8 9];B=rot90(A);C=fliplr(A);D=magic(3);D(:,10)=2;%%% %画图% x=linspace(0,2*pi,50);% y=cos(x);% plot(x,y,'r.')% plot(x,y,'*')% y=cos(x);% xlabel('x');% ylabel('y');% axis([0 1 0 1])% title('我是小黄鸡');% legend('x轴','y轴')% plot(x,y,'r+',x,sin(x),'mo')%%% 绘制双Y轴曲线% x=linspace(0,2,201);%生成等间距的采样数据% subplot(131);% [Ax1,h1,h2]=plotyy(x,sin(x*2),x,sinh(exp(x)));%绘制双Y轴曲线% xlabel('我是X轴');% ylabel('我是Y轴');% subplot(132);% [Ax2,h1,h2]=plotyy(x,abs(sin(x)),x,sinh(x),@semilogy);%绘制双Y轴曲线% xlabel('b','Fontsize',12,'fontname','Times New Roman');%x轴标注% box on;% subplot(133);% [Ax3,h1,h2]=plotyy(10*[x*10+1],abs(sin(x)),10*[x*10+1],sinh(x),'loglog',@semilogx);%绘制双Y轴曲线% axis([Ax1,Ax2,Ax3],'square');% xlabel('(c)','Fontsize',12,'fontname','Times New Roman');% set([Ax1,Ax2,Ax3],'Fontsize',10);%%% logglog函数% x1=logspace(-1,2);% subplot(131);% loglog(x1,exp(x1),'s-');% title('logglog函数绘图');% grid on;% x2=0:0.1:10;% subplot(132);% semilogx(10.^x2,x2,'r-.');% title('semilogx函数');% subplot(1,3,3);% semilogy(10.^x2,'rd');% title('semilogy函数'); %%%  x=0:0.01:1;%  y=sin(tan(pi*x));%  subplot(121);%  plot(x,y);%  title('plot绘图');%  subplot(122);%  fplot('sin(tan(pi*x))',[0,1],1e-4);%  title('fplot函数绘图'); %%%  %绘制参数函数的图形%  subplot(2,1,1);%  ezplot('cos(5*t)','sin(3*t)',[0,2*pi]);%绘制参数 函数效果图%  grid on;%  subplot(2,1,2);%  ezplot('5*x^2+25*y^2=6',[-1.5,1.5,-1,1]); %%% %  gin input 读取点 按Enter结束% x1=0:pi./100:2*pi;% plot(x1,cos(x1));% n=10;% % [x,y]=ginput(n)%鼠标读取% % [x,y]=ginput%无限读取% [x,y,button]=ginput%鼠标左右中的读取 %%% %  为绘制的图添加标注说明%  x=-pi:pi/20:pi;%  plot(x,cos(x),'-ro',x,sin(x),'-.b');%  h=legend('cos_x','sin_x',2);%  set(h,'Interpreter','none');%  xlabel('x');%  ylabel('y');%  title('绘制两条曲线');%  grid on;%添加网格线%  box off;%删除框图  是否添加 外框%  hold on;%  stem(x,sin(x),'-g*')%%% %在一个图形窗口中以子图形式绘制多条曲线% x=linspace(0,2*pi,60);% y=sin(x);% z=cos(x);% t=sin(x)./(cos(x)+eps);% c=cos(x)./(sin(x)+eps);% subplot(2,2,1);%只选择2行2列的第一个% stairs(x,y);% title('sin(x)-1');% axis([0 2*pi -1 1]);% % subplot(2,1,2);%只选择2行2列的第二个% stem(x,y);% title('sin(x)-2');% axis([0 2*pi -1 1]);% % subplot(4,4,3);%只选择4行4列的第三个% plot(x,y);% title('sin(x)');% axis([0 2*pi -1 1]);% subplot(4,4,7);%只选择4行4列的第7个% plot(x,y);% title('sin(x)');% axis([0 2*pi -1 1]);% subplot(4,4,8);%只选择4行4列的第8个% plot(x,y);% title('sin(x)');% axis([0 2*pi -1 1]);%%% %误差量图% x=linspace(0,2*pi,20);% y=sin(x);% z=std(y)*ones(size(x));% errorbar(x,y,z)%%% %画出条形图% x=1:15;% y=rand(size(x));% bar(x,y);% xlabel('条形图显示');%%% %极地型坐标% theta=linspace(0,2*pi);% r=cos(2*theta);% polar(theta,r)%%% hist函数显示资料的分段情况和统计特性x=randn(999,1);%randn产生高斯随机数hist(x,50);%50代表长条的个数%%% %stem函数产生针状图，绘制数位信号% x=linspace(0,10,100);% y=sin(x).*exp(-x/4);% stem(x,y);%%% % stairs函数可以画出阶样图% x=linspace(0,10,30);% y=sin(x).*exp(-x/4);% stairs(x,y)%%%fill函数将资料点视为多边形点，并将此多边形涂上颜色% x=linspace(0,10,100);% y=sin(x).*exp(-x/4);% fill(x,y,'c')%%% % feather函数将每一个资料点视为复数，并以箭头画出% theta=linspace(0,2*pi,40);% z=cos(theta)+i*sin(theta);% feather(z)%%% % compass和feather函数很像，只是每个箭头的起点都在圆内% theta=linspace(0,2*pi,40);% z=cos(theta)+i*sin(theta);% compass(z)%%% % 利用plot3、mesh、meshc、和meshz分别画出三维网格图% [X,Y]=meshgrid(-3:.5:3);% Z=2*X.^2-3*Y.^2;% subplot(2,2,1);% plot3(X,Y,Z)% title('plot3');% % subplot(2,2,2);% mesh(X,Y,Z)% title('mesh')% % subplot(2,2,3);% meshc(X,Y,Z);% title('meshc');% % subplot(2,2,4);% meshz(X,Y,Z);% title('meshz');%%% 利用hidden函数显示3维图形的透视效果% [X,Y]=meshgrid(-8:.5:8);% R=sqrt(X.^2+Y.^2)+eps;% Z=sin(R)./R;% subplot(121);% mesh(X,Y,Z)% hidden on;% subplot(122);% mesh(X,Y,Z)% hidden on;%%% %利用surf函数绘制三维表面图% [x,y]=meshgrid(-3:1/8:3);% z=peaks(x,y);% subplot(221);% surf(z);% title('绘制surf(z)绘图的形式');% subplot(222);% surf(x,y,z);% title('绘制surf(x,y,z)绘图的形式');% subplot(223);% surfl(x,y,z);% title('绘制surfl(x,y,z)绘图的形式');% % subplot(224);% surfc(z);% title('绘制surfc(x,y,z)绘图的形式');%%% %标准三维曲面图的绘制% t=0:pi/10:2*pi;% [X,Y,Z]=cylinder(2+cos(t));% subplot(2,2,1);% surf(X,Y,Z);% title('圆柱图');% axis square% % [x,y,z]=ellipsoid(0,0,0,5.9, 3.25, 3.25 ,30);% subplot(2,2,2);% surfl(x,y,z);% title('椭圆');% colormap hsv% axis equal% subplot(2,2,3);% surf(x,y,z);% axis equal% title('球体');% [x,y,z]=peaks;% subplot(2,2,4);% meshz(x,y,z);% title('多峰图');%%% %三维等高图% X=[0 1 1 2;1 1 2 2;0 0 1 1];% Y=[1 1 1 1;1 0 1 0;0 0 0 0];% Z=[1 1 1 1;1 0 1 0;0 0 0 0];% c=[0.5 1 1 0.5;1 0.5 0.5 0.1667;0.333 0.333 0.5 0.5];% subplot(121);% fill3(X,Y,Z,c);% title('填充图');% [X,Y,Z]=peaks;% subplot(122);% contour3(X,Y,Z,20);% title('等高线图');% set(gcf,'color','w');%%%从不同视点绘制多峰函数曲线% subplot(221);% mesh(peaks);% view(-37.5,30);% title('azimuth=37.5,elevation=30');% subplot(222);% mesh(peaks);% % view(0,90);% title('azimuth=0,elevation=90');% subplot(223);% mesh(peaks);% view(90,0);% title('azimuth=90,elevation=0');% subplot(224);% mesh(peaks);% view(-7,-12);% title('azimuth=-7,elevation=-12');