Exporting fine and coarse gaussians

Hello thank you for the wonderful work and making github publicly available.

I am trying to visualize both fine and coarse gaussians by exporting them to .ply, and for scene code, I see that there is export_ply but do you guys have the actual code to do that or where do I need to modify so I can export them?

If I could get some information on that, that would be very helpful. 

Thank you.