上机习题6MATLAB7.0三维绘图

1、 实验六7三.维0绘图 # 实验目的：掌握绘制三维图能形的方法；掌握图形修饰处理方法；知道图像处理方法，了解动画制作方法实验要求:给出程序和实验结果。实验内容：xsin(t)一、绘制三维曲线ycos(t)ztsin(t)cos(t)t=0:pi/100:20*pi;x=sin(t);y=cos(t);z=t.*sin(t).*cos(t);plot3(x,y,z);title(Linein3-DSpace);xlabel(X);ylabel(Y);zlabel(Z);gridon;ZLinein3-DSpace0.50.500-0.50.540200-20-401Y-1-1X1二、绘制三维曲面

2、图z=sin(x+sin(y)-x/10。x,y=meshgrid(0:0.25:4*pi);z=sin(x+sin(y)-x/10;mesh(x,y,z);axis(04*pi04*pi-2.51);-0.5-1101000三、绘制z=x2+y2的三维网线图形;x,y=meshgrid(0:0.25:4*pi);z=x.A2+y.A2;mesh(x,y,z)400 400 #30020010010101500400 #400 #四、绘制三维陀螺锥面(仅供参考：t1=0:0.1:0.9;t2=1:0.1:2;r=t1-t2+2;x,y,z=cylinder(r,30);surf(x,y,z);

3、grid)t1=0:0.1:0.9;t2=1:0.1:2;r=t1-t2+2;x,y,z=cylinder(r,30);surf(x,y,z);gridmesh(x,y,z)meshc(x,y,z) 1 0.8x0.6、0.40.2-1-11五、在xy平面内选择区域-8,8X-8,8，利用mesh、meshc、meshz和surf绘制zsin(px2+y2)x2+y2。要求用子图在一个图形窗口中绘制。x,y=meshgrid(-8:0.5:8);z=sin(sqrt(xT+y.A2)/sqrt(xT+yT+eps);subplot(2,2,1);mesh(x,y,z);title(mesh(x

4、,y,z)subplot(2,2,2);meshc(x,y,z);title(meshc(x,y,z)subplot(2,2,3);meshz(x,y,z)title(meshz(x,y,z)subplot(2,2,4);surf(x,y,z);title(surf(x,y,z)10-10-10010-110-10-1010-meshz(x,y,z)0-10-1010010-110-10-1010surf(x,y,z)六、绘制光照处理后的球面，取三个不同的光照位置进行比较。(提示：可以利用函数sphere和light)x,y,z=sphere(20);subplot(1,2,1);surf(x

5、,y,z);axisequal;light(Posi,0,1,1);shadinginterp;holdon;plot3(0,1,1,p);text(0,1,1,light);subplot(1,2,2);surf(x,y,z);axisequal;light(Posi,1,0,1);shadinginterp;holdon;plot3(1,0,1,p);text(1,0,1,light); 1 #light001-1-100-0.51-1-1 #1 # #1 #七、利用peaks产生数据，绘制多峰曲面图。X,Y,Z=peaks(27);subplot(1,2,1);mesh(Z)subplo

6、t(1,2,2);surf(Z)plot3(x,y,z)mesh(x,y,z)0.52 #10 5-103030000-5-U105-5-10303000plot3(x,y,z)mesh(x,y,z)0.52 #10 #plot3(x,y,z)mesh(x,y,z)0.52 10 #八.z=xe_x2_y2,当x和y的取值范围均为-2到2时，用建立子窗口的方法在同一个图形窗口中绘制出三维线图、网线图、表面图和带渲染效果的表面图。x,y=meshgrid(-2:0.2:2);z=x*exp(-x.T-y八2);mesh(x,y,z)subplot(2,2,1)plot3(x,y,z)title(

7、plot3(x,y,z)subplot(2,2,2)mesh(x,y,z)title(mesh(x,y,z)subplot(2,2,3)surf(x,y,z)title(surf(x,y,z)subplot(2,2,4)surf(x,y,z)shadinginterptitle(surf(x,y,z),shadinginterp)0-0.5202-2-2-0.52-2-2surf(x,y,z),shadinginterpsurf(x,y,z)0-2-22-0.52-2-2九绘制peaks函数的表面图，用colormap函数改变预置的色图，观察色彩的分布情况。surf(peaks(30) 10

8、#50-530-103000colormap(hot)202010103000colormap(cool)10 10 #2020101050-5-10300030colormap(lines)202010100030十、用sphere函数产生球表面坐标，绘制不透明网线图、透明网线图、表面图和带剪孔的表面图。x,y,z=sphere(30); 10 #mesh(x,y,z)0.5-0.50.50.5-0.50-0.5-1-1x,y,z=sphere(30);mesh(x,y,z)hiddenoff0.50.5000.50-0.5-0.5-0.51-1-1 10 #surf(x,y,z)0.5、-0.50.50.5-0.50-0.5-1-1 #10 # 10 #z(18:30,1:5)=NaN*on