# galpy.df.streamdf.meanOmega¶

streamdf.meanOmega(dangle, oned=False, offset_sign=None, tdisrupt=None)[source]

NAME:

meanOmega

PURPOSE:

calculate the mean frequency as a function of angle, assuming a uniform time distribution up to a maximum time

INPUT:

dangle - angle offset

oned= (False) if True, return the 1D offset from the progenitor (along the direction of disruption)

offset_sign= sign of the frequency offset (shouldn’t be set)

OUTPUT:

mean Omega

HISTORY:

2013-12-01 - Written - Bovy (IAS)