Record the transformation of the reference catalog coord.
The coord recorded in the reference catalog is tranformed to the
measurement coordinate system and stored.
Parameters
----------
config : `ForcedTransformedCentroidFromCoordConfig`
Plugin configuration
name : `str`
Plugin name
schemaMapper : `lsst.afw.table.SchemaMapper`
A mapping from reference catalog fields to output
catalog fields. Output fields are added to the output schema.
metadata : `lsst.daf.base.PropertySet`
Plugin metadata that will be attached to the output catalog.
Notes
-----
This can be used as the slot centroid in forced measurement when only a
reference coord exist, allowing subsequent measurements to simply refer to
the slot value just as they would in single-frame measurement.
Definition at line 779 of file plugins.py.
lsst.meas.base.plugins.ForcedTransformedCentroidFromCoordPlugin.measure |
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self, |
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measRecord, |
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exposure, |
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refRecord, |
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refWcs |
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Measure the properties of a source given an image and a reference.
Parameters
----------
exposure : `lsst.afw.image.ExposureF`
The pixel data to be measured, together with the associated PSF,
WCS, etc. All other sources in the image should have been replaced
by noise according to deblender outputs.
measRecord : `lsst.afw.table.SourceRecord`
Record describing the object being measured. Previously-measured
quantities will be retrieved from here, and it will be updated
in-place with the outputs of this plugin.
refRecord : `lsst.afw.table.SimpleRecord`
Additional parameters to define the fit, as measured elsewhere.
refWcs : `lsst.afw.geom.SkyWcs` or `lsst.afw.geom.Angle`
The coordinate system for the reference catalog values. An
`~lsst.geom.Angle` may be passed, indicating that a local tangent
WCS should be created for each object using the given angle as a
pixel scale.
Notes
-----
In the normal mode of operation, the source centroid will be set to
the WCS-transformed position of the reference object, so plugins that
only require a reference position should not have to access the
reference object at all.
Reimplemented from lsst.meas.base.plugins.ForcedTransformedCentroidPlugin.
Definition at line 806 of file plugins.py.