lsst.pipe.tasks.functors.E2 Class Reference

Inheritance diagram for lsst.pipe.tasks.functors.E2:

Public Member Functions
	__init__ (self, colXX, colXY, colYY, **kwargs)
	columns (self)

Public Attributes
	colXX
	colXY
	colYY

Static Public Attributes
str	name = "Ellipticity e2"

Protected Member Functions
	_func (self, df)

Detailed Description

Calculate :math:`e_2` ellipticity component for sources, defined as:

.. math::
    e_2 &= 2I_{xy}/(I_{xx}+I_{yy})

See Also
--------
E1

Definition at line 1136 of file functors.py.

Constructor & Destructor Documentation

__init__()

lsst.pipe.tasks.functors.E2.__init__	(		self,
			colXX,
			colXY,
			colYY,
		**	kwargs )

Reimplemented from lsst.pipe.tasks.functors.Functor.

Definition at line 1148 of file functors.py.

    def __init__(self, colXX, colXY, colYY, **kwargs):
        self.colXX = colXX
        self.colXY = colXY
        self.colYY = colYY
        super().__init__(**kwargs)
 

Member Function Documentation

_func()

lsst.pipe.tasks.functors.E2._func ( self, df )

protected

Reimplemented from lsst.pipe.tasks.functors.Functor.

Definition at line 1158 of file functors.py.

    def _func(self, df):
        return 2*df[self.colXY] / (df[self.colXX] + df[self.colYY])
 
 

columns()

lsst.pipe.tasks.functors.E2.columns

(

self

)

Columns required to perform calculation.

Reimplemented from lsst.pipe.tasks.functors.Functor.

Definition at line 1155 of file functors.py.

    def columns(self):
        return [self.colXX, self.colXY, self.colYY]
 

Member Data Documentation

colXX

lsst.pipe.tasks.functors.E2.colXX

Definition at line 1149 of file functors.py.

colXY

lsst.pipe.tasks.functors.E2.colXY

Definition at line 1150 of file functors.py.

colYY

lsst.pipe.tasks.functors.E2.colYY

Definition at line 1151 of file functors.py.

name

str lsst.pipe.tasks.functors.E2.name = "Ellipticity e2"

static

Definition at line 1146 of file functors.py.

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The documentation for this class was generated from the following file:

• /j/snowflake/release/lsstsw/stack/lsst-scipipe-8.0.0/Linux64/pipe_tasks/g2a9a014e59+6f9be1b9cd/python/lsst/pipe/tasks/functors.py