matlab经典算法的程序.doc

matlab经典算法的程序——绘图 时间：2010-03-19 18:56:25??作者：Admin??点击：239 程序代码： clearclcsubplot(1,2,1);t = 0:0.01:2*pi;x = cos(2*t).*(cos(t).^2);y = sin(2*t).*(sin(t).^2);comet(x,y)subplot(1,2,2);t = -10*pi:pi/250:10*pi;comet3((cos(2*t).^2).*sin(t),(sin(2*t).^2).*cos(t),t) clearclcsubplot(2,2,1)contour3(peaks,50); %画出曲面在三度空间中的等高线axis(［-inf inf -inf inf -inf inf］); subplot(2,2,2)contour(peaks, 50); %画出曲面等高线在XY平面的投影subplot(2,2,3)t=linspace(0,20*pi, 501); plot3(t.*sin(t), t.*cos(t), t);% 画出三度空间中的曲线subplot(2,2,4)plot3(t.*sin(t), t.*cos(t), t, t.*sin(t), t.*cos(t), -t);% 同时画出两条三度空间中的曲线 clearclct=(0:0.02:2)*pi;x=sin(t);y=cos(t);z=cos(2*t);plot3(x,y,z,b-,x,y,z,bd)view(［-82,58］);box onlegend(链,宝石); clearclcsubplot(3,3,1)ezplot(cos(x))subplot(3,3,2)ezplot(cos(x), ［0, pi］)subplot(3,3,3)ezplot(1/y-log(y)+log(-1+y)+x - 1)subplot(3,3,4)ezplot(x^2 - y^2 - 1)subplot(3,3,5)ezplot(x^2 + y^2 - 1,［-1.25,1.25］); axis equalsubplot(3,3,6)ezplot(x^3 + y^3 - 5*x*y + 1/5,［-3,3］)subplot(3,3,7)ezplot(x^3 + 2*x^2 - 3*x + 5 - y^2)subplot(3,3,8)ezplot(sin(t),cos(t))subplot(3,3,9)ezplot(sin(3*t)*cos(t),sin(3*t)*sin(t),［0,pi］) clearclcsubplot(2,2,1), fplot(humps,［0 1］)subplot(2,2,2), fplot(abs(exp(-j*x*(0:9))*ones(10,1)),［0 2*pi］)subplot(2,2,3), fplot(［tan(x),sin(x),cos(x)］,2*pi*［-1 1 -1 1］)subplot(2,2,4), fplot(sin(1 ./ x), ［0.01 0.1］,1e-3) clearclc［X0,Y0,Z0］=sphere(30);?????? %产生单位球面的三维坐标X=2*X0;Y=2*Y0;Z=2*Z0;??????? %产生半径为2的球面的三维坐标clfsubplot(1,2,1);surf(X0,Y0,Z0);????????? %画单位球面shading interp?????????????? %采用插补明暗处理hold on,mesh(X,Y,Z),colormap(hot),hold off?????? %采用hot色图hidden off??????????????????? %产生透视效果axis equal,axis off????????? %不显示坐标轴title(透视图)subplot(1,2,2);surf(X0,Y0,Z0);????????? %画单位球面shading interp?????????????? %采用插补明暗处理hold on,mesh(X,Y,Z),colormap(hot),hold off?????? %采用hot色图hidden on??????????????????? %产生消隐效果axis equal,axis off????????? %不显示坐标轴title(消隐图) clearclc［x,y,z］ =peaks; subplot(2,3,1);meshz(x,y,z); %曲面