lsst.pipe.tasks  13.0-66-gfbf2f2ce+5
Public Member Functions | Static Public Attributes | List of all members
lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask Class Reference
Inheritance diagram for lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask:
lsst.pipe.tasks.scaleZeroPoint.SpatialScaleZeroPointTask

Public Member Functions

def __init__ (self, args, kwargs)
 
def run (self, exposure, dataRef=None)
 
def computeImageScaler (self, exposure, dataRef=None)
 
def getCalib (self)
 
def scaleFromCalib (self, calib)
 
def scaleFromFluxMag0 (self, fluxMag0)
 

Static Public Attributes

 ConfigClass = ScaleZeroPointConfig
 

Detailed Description

Compute scale factor to scale exposures to a desired photometric zero point

This simple version assumes that the zero point is spatially invariant.

Definition at line 134 of file scaleZeroPoint.py.

Constructor & Destructor Documentation

◆ __init__()

def lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask.__init__ (   self,
  args,
  kwargs 
)
Construct a ScaleZeroPointTask

Definition at line 142 of file scaleZeroPoint.py.

Member Function Documentation

◆ computeImageScaler()

def lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask.computeImageScaler (   self,
  exposure,
  dataRef = None 
)
Compute image scaling object for a given exposure.

@param[in] exposure: exposure for which scaling is desired
@param[in] dataRef: dataRef for exposure.
               Not used, but in API so that users can switch between spatially variant
               and invariant tasks

Definition at line 169 of file scaleZeroPoint.py.

◆ getCalib()

def lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask.getCalib (   self)
Get desired Calib

@return calibration (lsst.afw.image.Calib) with fluxMag0 set appropriately for config.zeroPoint

Definition at line 180 of file scaleZeroPoint.py.

◆ run()

def lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask.run (   self,
  exposure,
  dataRef = None 
)
Scale the specified exposure to the desired photometric zeropoint

@param[in,out] exposure: exposure to scale; masked image is scaled in place
@param[in] dataRef: dataRef for exposure.
               Not used, but in API so that users can switch between spatially variant
               and invariant tasks
@return a pipeBase.Struct containing:
- imageScaler: the image scaling object used to scale exposure

Definition at line 152 of file scaleZeroPoint.py.

◆ scaleFromCalib()

def lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask.scaleFromCalib (   self,
  calib 
)
Compute the scale for the specified Calib

Compute scale, such that if pixelCalib describes the photometric zeropoint of a pixel
then the following scales that pixel to the photometric zeropoint specified by config.zeroPoint:
    scale = computeScale(pixelCalib)
    pixel *= scale

@return a pipeBase.Struct containing:
- scale, as described above.

@note: returns a struct to leave room for scaleErr in a future implementation.

Definition at line 187 of file scaleZeroPoint.py.

◆ scaleFromFluxMag0()

def lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask.scaleFromFluxMag0 (   self,
  fluxMag0 
)
Compute the scale for the specified fluxMag0

This is a wrapper around scaleFromCalib, which see for more information

@param[in] fluxMag0
@return a pipeBase.Struct containing:
- scale, as described in scaleFromCalib.

Definition at line 205 of file scaleZeroPoint.py.

Member Data Documentation

◆ ConfigClass

lsst.pipe.tasks.scaleZeroPoint.ScaleZeroPointTask.ConfigClass = ScaleZeroPointConfig
static

Definition at line 139 of file scaleZeroPoint.py.


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