lsst.pipe.tasks.scaleZeroPoint.SpatialImageScaler Class Reference

Inheritance diagram for lsst.pipe.tasks.scaleZeroPoint.SpatialImageScaler:

Public Member Functions
def	__init__
def	scaleMaskedImage
def	getInterpImage
Public Member Functions inherited from lsst.pipe.tasks.scaleZeroPoint.ImageScaler
def	__init__
def	scaleMaskedImage

Private Attributes
	_xList
	_yList
	_scaleList

Detailed Description

Multiplicative image scaler using interpolation over a grid of points.

Contains the x, y positions in tract coordinates and the scale factors.
Interpolates only when scaleMaskedImage() or getInterpImage() is called.

Currently the only type of 'interpolation' implemented is CONSTANT which calculates the mean.

Definition at line 52 of file scaleZeroPoint.py.

Constructor & Destructor Documentation

def lsst.pipe.tasks.scaleZeroPoint.SpatialImageScaler.__init__	(		self,
			interpStyle,
			xList,
			yList,
			scaleList
	)

Constructor

@param[in] interpStyle: interpolation style (CONSTANT is only option)
@param[in] xList: list of X pixel positions
@param[in] yList: list of Y pixel positions
@param[in] scaleList: list of multiplicative scale factors at (x,y)

@raise RuntimeError if the lists have different lengths

Definition at line 61 of file scaleZeroPoint.py.

    def __init__(self, interpStyle, xList, yList, scaleList):
        """Constructor

        @param[in] interpStyle: interpolation style (CONSTANT is only option)
        @param[in] xList: list of X pixel positions
        @param[in] yList: list of Y pixel positions
        @param[in] scaleList: list of multiplicative scale factors at (x,y)

        @raise RuntimeError if the lists have different lengths
        """
        if len(xList) != len(yList) or len(xList) != len(scaleList):
            raise RuntimeError(
                "len(xList)=%s len(yList)=%s, len(scaleList)=%s but all lists must have the same length" %
                (len(xList), len(yList), len(scaleList)))

        #Eventually want this do be: self.interpStyle = getattr(afwMath.Interpolate2D, interpStyle)
        self._xList = xList
        self._yList = yList
        self._scaleList = scaleList