medianEllipticityResidualsFromCat¶
- lsst.validate.drp.util.medianEllipticityResidualsFromCat(cat)¶
Compute the median ellipticty residuals from a catalog of measurements.
This function is used as an aggregate function to extract just declination from lsst.validate.drp.matchreduce.build_matched_dataset
The intent is to use this for a set of measurements of the same source but that’s neither enforced nor required.