calibration error handling improved

mommermi · Aug 7, 2018 · 7414724 · 7414724
1 parent a8b17d7
commit 7414724
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Showing 2 changed files with 6 additions and 3 deletions.
diff --git a/catalog.py b/catalog.py
@@ -1020,7 +1020,6 @@ def transform_filters(self, targetfilter):
             # ... derive a linear best fit and remove outliers (>3 sigma)
             ri = numpy.array(filtered_mags[1]) - numpy.array(filtered_mags[2])
             gr = numpy.array(filtered_mags[0]) - numpy.array(filtered_mags[1])
-
             if len(ri) == 0 or len(gr) == 0:
                 logging.warning('no suitable stars for transformation to %s' %
                                 targetfilter)

diff --git a/pp_calibrate.py b/pp_calibrate.py
@@ -139,8 +139,12 @@ def create_photometrycatalog(ra_deg, dec_deg, rad_deg, filtername,
             ('SkyMapper' in catalogname and
              filtername not in {'g', 'r', 'i'})):
 
-            n_transformed = cat.transform_filters(filtername) - \
-                cat.reject_sources_with(
+            n_transformed = cat.transform_filters(filtername)
+            if n_transformed == 0:
+                raise ValueError(('unable to transform {:s} to {:s}'.format(
+                    cat.catalogname, filtername) +
+                    '; refer to LOG file for details'))
+            n_transformed -= cat.reject_sources_with(
                 cat['_e_'+filtername+'mag'] > mag_accuracy)
 
             if display and n_transformed > 0: