Merge branch 'interpolationFix' into 'develop'

Interpolation fix

See merge request !443

CHANGELOG.md

@@ -30,8 +30,10 @@ This changelog starts with version 2.0.0. Basically all parts of the system, inc
 - `DmpScheme`: set `DFILTER_DEFAULT` to 1 in order to not mask the flag 'OK'
 - `correctDrift`: fixed bug when correcting single value intervals
 - `concatFlags`: fixed bug in context of squeezed history appending (UNTOUCHED vs UNFLAGGED information now doesnt get lost)
+- `interpolateInvalid`: Fix: replacement of flags for interpolated values now works
 - `resample`: resampling func now actually gets passed on to `history.appy()`
 
+
 ## [2.0.1](https://git.ufz.de/rdm-software/saqc/-/tags/v2.0.1) - 2021-12-20
 [List of commits](https://git.ufz.de/rdm-software/saqc/-/compare/v2.0.0...v2.0.1)
 ### Added

saqc/funcs/interpolation.py

@@ -186,9 +186,9 @@ def interpolateInvalid(
         inter_limit=limit,
         downgrade_interpolation=downgrade,
     )
-    data[field] = inter_data
 
     interpolated = data[field].isna() & inter_data.notna()
+    data[field] = inter_data
     new_col = pd.Series(np.nan, index=flags[field].index)
     new_col.loc[interpolated] = np.nan if flag is None else flag