E2# class lsst.pipe.tasks.functors.E2(colXX, colXY, colYY, **kwargs)# Bases: Functor Calculate \(e_2\) ellipticity component for sources, defined as: \[e_2 &= 2I_{xy}/(I_{xx}+I_{yy})\] See Also# E1 Attributes Summary columns Columns required to perform calculation. name Attributes Documentation columns# name = 'Ellipticity e2'#