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  1. Data Management
  2. DM-6293

Fix error in cmodel related to computing LinearTransforms

    Details

    • Type: Bug
    • Status: Done
    • Priority: Major
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: afw, meas_modelfit
    • Labels:
      None
    • Templates:
    • Story Points:
      4
    • Sprint:
      DRP X16-3, DRP F16-1
    • Team:
      Data Release Production

      Description

      When running cmodel in ci_hsc, the cmodel plugin throws the error:

      processCcd.charImage.detectAndMeasure.measurement WARNING: Error in modelfit_CModel.measure on record 775961510756221246: 
        File "src/geom/LinearTransform.cc", line 66, in const lsst::afw::geom::LinearTransform lsst::afw::geom::LinearTransform::invert() const
          Could not compute LinearTransform inverse {0}
      lsst::afw::geom::SingularTransformException: 'Could not compute LinearTransform inverse'
      

      This seems to be causing some aperture corrections to fail, as there are no sources to compute the corrections from. Investigate why this error is being thrown. If it is a bug, fix it, if the code is not handling situations it should then make the algorithm more robust.

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                • Assignee:
                  nlust Nate Lust
                  Reporter:
                  nlust Nate Lust
                  Watchers:
                  Nate Lust
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                    Updated:
                    Resolved:

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