作业帮matlab surf用法xgrid=linspace(0,100,10000);ygrid=linspace(0,100,10000);[x,y]=meshgrid(xgrid,ygrid);z=(3236*x.^2*y+1109*x.^2+5416*x*y.^2+6616*x*y+1445*x+2199*y.^2+1990*y+318)./[1000*(2*x+1)*(2*y+1)*(x+y+1)];surf(x,y,z);
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![matlab surf用法xgrid=linspace(0,100,10000);ygrid=linspace(0,100,10000);[x,y]=meshgrid(xgrid,ygrid);z=(3236*x.^2*y+1109*x.^2+5416*x*y.^2+6616*x*y+1445*x+2199*y.^2+1990*y+318)./[1000*(2*x+1)*(2*y+1)*(x+y+1)];surf(x,y,z);](/uploads/image/z/1075053-21-3.jpg?t=matlab+surf%E7%94%A8%E6%B3%95xgrid%3Dlinspace%280%2C100%2C10000%29%3Bygrid%3Dlinspace%280%2C100%2C10000%29%3B%5Bx%2Cy%5D%3Dmeshgrid%28xgrid%2Cygrid%29%3Bz%3D%283236%2Ax.%5E2%2Ay%2B1109%2Ax.%5E2%2B5416%2Ax%2Ay.%5E2%2B6616%2Ax%2Ay%2B1445%2Ax%2B2199%2Ay.%5E2%2B1990%2Ay%2B318%29.%2F%5B1000%2A%282%2Ax%2B1%29%2A%282%2Ay%2B1%29%2A%28x%2By%2B1%29%5D%3Bsurf%28x%2Cy%2Cz%29%3B)
matlab surf用法xgrid=linspace(0,100,10000);ygrid=linspace(0,100,10000);[x,y]=meshgrid(xgrid,ygrid);z=(3236*x.^2*y+1109*x.^2+5416*x*y.^2+6616*x*y+1445*x+2199*y.^2+1990*y+318)./[1000*(2*x+1)*(2*y+1)*(x+y+1)];surf(x,y,z);
matlab surf用法
xgrid=linspace(0,100,10000);
ygrid=linspace(0,100,10000);
[x,y]=meshgrid(xgrid,ygrid);
z=(3236*x.^2*y+1109*x.^2+5416*x*y.^2+6616*x*y+1445*x+2199*y.^2+1990*y+318)./[1000*(2*x+1)*(2*y+1)*(x+y+1)];
surf(x,y,z);
matlab surf用法xgrid=linspace(0,100,10000);ygrid=linspace(0,100,10000);[x,y]=meshgrid(xgrid,ygrid);z=(3236*x.^2*y+1109*x.^2+5416*x*y.^2+6616*x*y+1445*x+2199*y.^2+1990*y+318)./[1000*(2*x+1)*(2*y+1)*(x+y+1)];surf(x,y,z);
三维曲面（色）图
surf 和 surfc 是通过矩形区域来观测数学函数的函数.surf和surfc能够产生由X、Y、Z指定的有色参数化曲面,即三维有色图.
当x = 1:n、y = 1:m,并且[m,n]=size(Z)时,surf(Z)会产生一个矩阵Z的z部分的三维遮罩层,这里Z是一个定义在几何矩形网格内的单值函数.
surf(X,Y,Z)同样产生矩阵Z的有色遮罩层,XY可以是有xy定义的向量或矩阵
surf(X,Y,Z,C)是产生一个由C定义颜色的矩阵Z的有色遮罩层
例子
k = 5;
n = 2^k-1;
[x,y,z] = sphere(n);
c = hadamard(2^k);
figure(1)
surf(z);
figure(2)
surf(x,y,z);
axis equal
figure(3)
surf(x,y,z,c);
colormap([1 1 0; 0 1 1])
axis equal