I found those codes for drawing a sphere. I can get the x,y,z coordinates.
I would like to use those x,y,z coordinates. But I don't want to color the sphere by using the surf command. In state, I want it to leave the sphere blank by only with the mesh lines. Then I want to plot a single point on each mesh nodes according to radius. There would be dots on each mesh nodes. And the radius of the dots would be varying by z coordinates. For example, for the downside, the dots would be small, on the upside the dots would be bigger.
[x,y,z] = sphere;
x = x(11:end,:);
y = y(11:end,:);
z = z(11:end,:);
r = 1;
surf(r.*x,r.*y,r.*z);
axis equal;
