lsst.meas.base g96728d7751+4c68ab7772
Public Member Functions | Public Attributes | Static Public Attributes | List of all members
lsst.meas.base.plugins.EvaluateLocalWcsPlugin Class Reference
Inheritance diagram for lsst.meas.base.plugins.EvaluateLocalWcsPlugin:
lsst.meas.base.wrappers.GenericPlugin lsst.meas.base.pluginsBase.BasePlugin

Public Member Functions

def getExecutionOrder (cls)
 
def __init__ (self, config, name, schema, metadata)
 
def measure (self, measRecord, exposure, center)
 
def makeLocalTransformMatrix (self, wcs, center)
 

Public Attributes

 cdMatrix11Key
 
 cdMatrix12Key
 
 cdMatrix21Key
 
 cdMatrix22Key
 

Static Public Attributes

 ConfigClass = EvaluateLocalWcsPluginConfig
 

Detailed Description

Evaluate the local, linear approximation of the Wcs.

The aim is to store the local calib value within the catalog for later
use in the Science Data Model functors.

Definition at line 465 of file plugins.py.

Constructor & Destructor Documentation

◆ __init__()

def lsst.meas.base.plugins.EvaluateLocalWcsPlugin.__init__ (   self,
  config,
  name,
  schema,
  metadata 
)

Reimplemented from lsst.meas.base.wrappers.GenericPlugin.

Definition at line 478 of file plugins.py.

Member Function Documentation

◆ getExecutionOrder()

def lsst.meas.base.plugins.EvaluateLocalWcsPlugin.getExecutionOrder (   cls)
Get the relative execution order of this plugin.

Must be reimplemented as a class method by concrete derived classes.

Reimplemented from lsst.meas.base.wrappers.GenericPlugin.

Definition at line 475 of file plugins.py.

◆ makeLocalTransformMatrix()

def lsst.meas.base.plugins.EvaluateLocalWcsPlugin.makeLocalTransformMatrix (   self,
  wcs,
  center 
)
Create a local, linear approximation of the wcs transformation
matrix.

The approximation is created as if the center is at RA=0, DEC=0. All
comparing x,y coordinate are relative to the position of center. Matrix
is initially calculated with units arcseconds and then converted to
radians. This yields higher precision results due to quirks in AST.

Parameters
----------
wcs : `lsst.afw.geom.SkyWcs`
    Wcs to approximate
center : `lsst.geom.Point2D`
    Point at which to evaluate the LocalWcs.

Returns
-------
localMatrix : `numpy.ndarray`
    Matrix representation the local wcs approximation with units
    radians.

Definition at line 509 of file plugins.py.

◆ measure()

def lsst.meas.base.plugins.EvaluateLocalWcsPlugin.measure (   self,
  measRecord,
  exposure,
  center 
)
Measure a single source.

It is the responsibility of this method to perform the desired
measurement and record the result in the `measRecord`.

Parameters
----------
measRecord : `lsst.afw.table.SourceRecord`
    Catalog record for the source being measured.
exposure : `lsst.afw.image.Exposure`
    Exposure on which the source is being measured.
center : `lsst.geom.Point2D`
    Pixel coordinates of the object.

Raises
------
MeasurementError
    Raised if the measurement fails for a known/justifiable reason.

Reimplemented from lsst.meas.base.wrappers.GenericPlugin.

Definition at line 501 of file plugins.py.

Member Data Documentation

◆ cdMatrix11Key

lsst.meas.base.plugins.EvaluateLocalWcsPlugin.cdMatrix11Key

Definition at line 480 of file plugins.py.

◆ cdMatrix12Key

lsst.meas.base.plugins.EvaluateLocalWcsPlugin.cdMatrix12Key

Definition at line 485 of file plugins.py.

◆ cdMatrix21Key

lsst.meas.base.plugins.EvaluateLocalWcsPlugin.cdMatrix21Key

Definition at line 490 of file plugins.py.

◆ cdMatrix22Key

lsst.meas.base.plugins.EvaluateLocalWcsPlugin.cdMatrix22Key

Definition at line 495 of file plugins.py.

◆ ConfigClass

lsst.meas.base.plugins.EvaluateLocalWcsPlugin.ConfigClass = EvaluateLocalWcsPluginConfig
static

Definition at line 471 of file plugins.py.


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