'''
This python module is useful to manipulate N-body data.
It allows to compute simple pysical values like energy, 
kinetic momentum, intertial momentum, centrer of mass etc.
It also allows to modify the data with rotation, translations,
select some particules, add particles etc.
Associated scripts like "gdisp", "mkmovie" or "movie" allow
to visualise the N-body data in different ways : surface density,
velocity map, velocity dispertion map, etc.

Yves Revaz 14.05.05
'''

# nbody classes
from main import *
 

