[R] How to remove the outer rectangle in 3D plot/surface.

[Jinsong Zhao]

Hello,

I plot a 3D plot/surface using cloud function in lattice package. 

Several days ago, I post a question about 
how to remove the framebox out the 3D plot/surface.

However, I think I don't make me understood clearly.
I just hope to romove the outer rectangle or box around the box.

Thanks again.

Regards,
Jinsong Zhao