Plotting 3D truncated cone in matlab

Question

如何使用Matlab绘制圆锥台形状的3D节点，我想将每两个节点与线连接在一起。

Answer 1

Here is a truncated cone (based on http://msemac.redwoods.edu/~darnold/math50c/matlab/coordcyl/index.xhtml ). I'm not sure if this is the type of mesh you are looking for.

r=linspace(1,2,25);
theta = linspace(0,2*pi,25);
[r,theta] = meshgrid(r,theta);
x = r.*cos(theta);
y = r.*sin(theta);
z = -r;
mesh(x,y,z)