galpy.df.streamdf.meanangledAngle

streamdf.meanangledAngle(dangle, smallest=False)

NAME:

meanangledAngle

PURPOSE:

calculate the mean perpendicular angle at a given angle

INPUT:

dangle - angle offset along the stream

smallest= (False) calculate for smallest eigenvalue direction rather than for middle

OUTPUT:

mean perpendicular angle

HISTORY:

2013-12-06 - Written - Bovy (IAS)