Hi yt-users!

I have what I think should be a relatively simple question.  I am trying to make a 3D image of a region of a cosmological simulation, and plot points in the image.  I define my region with box(left_edge,right_edge) where left_edge and right_edge are in code units.  However, the points that I read in from an earlier file are in cgs units.  Since the file was written using yt output, I would like to just let yt do the conversions, but nothing has units attached.  I want the 3d image to get everything into the same units.  I feel like there are a few ways I could fix this problem--1)  tell yt that my points are in cgs units, 2) force the create_scene to be in cgs units, 3) get yt to tell me the conversion factor from code units to cgs units.  

Unfortunately, I don't know how to do any of these things!  

Can someone give me some advice on what to do here?



Dr. Stephanie Tonnesen
Alvin E. Nashman Postdoctoral Fellow
Carnegie Observatories, Pasadena, CA