ex4_22.m

来自「源代码集合」· M 代码 · 共 11 行

[x,y] = meshgrid(-3:0.1:3,-2:0.1:2);
z=(x.^2-2*x).*exp(-x.^2-y.^2-x.*y);
surf(x,y,z), shading flat; axis([-3 3 -2 2 -0.7 1.5])

contour(x, y, z)

contour(x, y, z, 30)

contour3(x, y, z)

contour3(x, y, z, 50)