MatchTolerancePessimistic¶
- class lsst.meas.astrom.MatchTolerancePessimistic(maxMatchDist=None, autoMaxMatchDist=None, maxShift=None, lastMatchedPattern=None, failedPatternList=None, PPMbObj=None)¶
Bases:
MatchTolerance
Stores match tolerances for use in AstrometryTask and later iterations of the matcher.
MatchPessimisticBTask relies on several state variables to be preserved over different iterations in the AstrometryTask.matchAndFitWcs loop of AstrometryTask.
- Parameters:
- maxMatchDist
lsst.geom.Angle
Maximum distance to consider a match from the previous match/fit iteration.
- autoMaxMatchDist
lsst.geom.Angle
Automated estimation of the maxMatchDist from the sky statistics of the source and reference catalogs.
- maxShift
lsst.geom.Angle
Maximum shift found in the previous match/fit cycle.
- lastMatchedPattern
int
Index of the last source pattern that was matched into the reference data.
- failedPatternList
list
ofint
Previous matches were found to be false positives.
- PPMbObj
lsst.meas.astrom.PessimisticPatternMatcherB
Initialized Pessimistic pattern matcher object. Storing this prevents the need for recalculation of the searchable distances in the PPMB.
- maxMatchDist