www.gusucode.com > 《matlab图像处理与界面编程宝典》秦襄培 编著，每章的MATLAB源代码程序 > 第8章/代码8-1.txt

    
[x y z v] = flow;
p = patch(isosurface(x,y,z,v,-3));
isonormals(x,y,z,v,p);
set(p,'facecolor','red','edgecolor','none');
daspect([1 1 1]);
view(3); axis tight; grid on;
camlight; lighting gouraud;