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matlab实用程序百例 实例20： 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); 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); 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) 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') 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],... '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',... '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');
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