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setunits_3.py
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Wed, Jul 10, 18:07

setunits_3.py
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#!/usr/bin/env python
from pNbody import *
# define a new system of units : kpc,Msol,Myr
system_of_units = units.UnitSystem('local',[units.Unit_kpc, 10**10*units.Unit_Ms, units.Unit_Myr])
# get info
system_of_units.info()
# trivial conversion factor into kpc,10**10Msol,Myr
print system_of_units.convertionFactorTo(units.Unit_kpc)
print system_of_units.convertionFactorTo(10**10*units.Unit_Ms)
print system_of_units.convertionFactorTo(units.Unit_Myr)
# length
#
print system_of_units.convertionFactorTo(units.Unit_cm)
print system_of_units.convertionFactorTo(units.Unit_m)
print system_of_units.convertionFactorTo(units.Unit_km)
# velocity
print system_of_units.convertionFactorTo(units.Unit_km/units.Unit_s)
print system_of_units.convertionFactorTo(units.Unit_kms)
# energy
print system_of_units.convertionFactorTo(units.Unit_kg*units.Unit_ms**2)
print system_of_units.convertionFactorTo(units.Unit_J)
# density
print system_of_units.convertionFactorTo(units.Unit_g/units.Unit_cm**3)

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