rotating 3D surface
 

dear all,

I have a a list of points in 3 dimensions who form a 3D surface. In the statistical package R I can create a wireframe of this surface and present this wireframe as an image. For a presentation however, I would like to be able to rotate the 3D surface on screen and when I click a certain point on this surface, it should show me the coordinates of this point.

Does any of you know a simple, free tool that can accomplish this? I have to give this presentation this afternoon so any suggestions are welcome.

regards,

Steven