THIS PAGE IS A WORK IN PROGRESS. PLEASE REFRAIN FROM EDITING, COMMENTING ON, OR BELIEVING ANY OF THIS UNTIL IT IS RELEASED.
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Reverting to the Old Framework
For the present, you will continue to support the measurement.py task in meas_algorithms. The measurement task used by processCcd and processCoadd is controlled by configurations items in CalibrateConfig and ProcessImageConfig, and can be retargeted back to the original meas_algorithms framework using the following python code:
from lsst.meas.algorithms.measurement import SourceMeasurementTask
root.calibrate.initialMeasurement.retarget(SourceMeasurementTask)
root.calibrate.measurement.retarget(SourceMeasurementTask)
root.measurement.retarget(SourceMeasurementTask)
Please note that the original framework writes tables with version=0 schemata, and expects the plugins and fieldnames to use the old naming conventions. For example, you must refer to the SdssCentroid plugin as 'centroid.sdss' and the value it stores in the output table will be afw.geom.PointD type with the name 'centroid.sdss'.
Some care has been taken to make all of the tasks called by processImage sensitive to which measurement framework and schema version are in use, so that the pipeline will work with either measurement task. However, the developer should be careful when accessing or adding fields to the schemas to know which measurement task and which naming conventions are in effect. For new code, we encourage the use of the meas_base measurement framework and schema version=1 tables.TODO
Schema Changes and Versioning
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