Merge pull request #166 from lsst/tickets/DM-12933

DM-12933: Write variance scaling to Exposure metadata, not Task metadata
lsst · Dec 7, 2017 · f7234cf · f7234cf
2 parents 4464a26 + 5e52f5d
commit f7234cf
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/python/lsst/pipe/tasks/multiBand.py b/python/lsst/pipe/tasks/multiBand.py
@@ -282,7 +282,8 @@ def runDetection(self, exposure, idFactory):
         using \ref scaleVariance. Then invoke the \ref SourceDetectionTask_ "detection" subtask to
         detect sources.
 
-        \param[in] exposure: Exposure on which to detect
+        \param[in,out] exposure: Exposure on which to detect (may be backround-subtracted and scaled,
+                                 depending on configuration).
         \param[in] idFactory: IdFactory to set source identifiers
 
         \return a pipe.base.Struct with fields
@@ -291,7 +292,7 @@ def runDetection(self, exposure, idFactory):
         """
         if self.config.doScaleVariance:
             varScale = scaleVariance(exposure.getMaskedImage(), self.config.mask, log=self.log)
-            self.metadata.add("variance_scale", varScale)
+            exposure.getMetadata().add("variance_scale", varScale)
         backgrounds = afwMath.BackgroundList()
         if self.config.doInsertFakes:
             self.insertFakes.run(exposure, background=backgrounds)