plot a 3d point in MatLab

Question

I'm trying to plot just one point in any coordinate system: Cartesian, cylindrical or spherical.

I tried plot3(1,1,1) with many values but just shows a tiny point in the same location for all values! I tried surf(X,Y,Z) as well but matlab said: Z must be a matrix, not a scalar or vector.

Answer 1

How about this?

plot3(1,1,1,'.');
grid on

You did try it, but then again, that is exactly what it does!

Answer 2

像scatter3（x，y，z1,720，'g'，'fill'）之类的东西将在向量x，y，z1中列出的所有点周围形成720大小的不透明绿色球体。