Question

已知函数表达式,如何画出图形?比如x^2+y^2+z^2+xy=1

Answer 1

clear

x=-2:0.05:2;y=-2:0.05:2;z=-2:0.05:2;

[x,y,z]=meshgrid(x,y,z);

v=x.^2+y.^2+z.^2+x.*y;

isosurface(x,y,z,v,1);

colormap(([0 0.5 1])) %挑颜色