lsst.meas.algorithms.sourceSelector.MagnitudeErrorLimit Class Reference

Inheritance diagram for lsst.meas.algorithms.sourceSelector.MagnitudeErrorLimit:

Public Member Functions
	apply (self, catalog)

Static Public Attributes
	magErrField

Detailed Description

Select sources using a magnitude error limit

Because the magnitude error is the inverse of the signal-to-noise
ratio, this also works to select sources by signal-to-noise when
you only have a magnitude.

This object can be used as a `lsst.pex.config.Config` for configuring
the limit, and then the `apply` method can be used to identify sources
in the catalog that match the configured limit.

Definition at line 347 of file sourceSelector.py.

Member Function Documentation

apply()

lsst.meas.algorithms.sourceSelector.MagnitudeErrorLimit.apply	(		self,
			catalog )

Apply the magnitude error limits to a catalog

Parameters
----------
catalog : `lsst.afw.table.SourceCatalog`
    Catalog of sources to which the limit will be applied.

Returns
-------
selected : `numpy.ndarray`
    Boolean array indicating for each source whether it is selected
    (True means selected).

Reimplemented from lsst.meas.algorithms.sourceSelector.BaseLimit.

Definition at line 361 of file sourceSelector.py.

    def apply(self, catalog):
        """Apply the magnitude error limits to a catalog
 
        Parameters
        ----------
        catalog : `lsst.afw.table.SourceCatalog`
            Catalog of sources to which the limit will be applied.
 
        Returns
        -------
        selected : `numpy.ndarray`
            Boolean array indicating for each source whether it is selected
            (True means selected).
        """
        return BaseLimit.apply(self, catalog[self.magErrField])
 
 

Member Data Documentation

magErrField

lsst.meas.algorithms.sourceSelector.MagnitudeErrorLimit.magErrField

static

Initial value:

=  pexConfig.Field(dtype=str, default="mag_err",
                                  doc="Name of the source flux error field to use.")

Definition at line 358 of file sourceSelector.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/meas_algorithms/ge6526c86ff+3a7c1ac5f1/python/lsst/meas/algorithms/sourceSelector.py