small fix to flag initialisation (still setting to zero as default, but now with different fillvalue in attributes, depending on what dtype is used).

Author: pdevis

obsarray/flag_accessor.py

@@ -465,9 +465,11 @@ def create_flags_variable(dim_sizes, meanings, dim_names=None, attributes=None):
             data_type,
             dim_names=dim_names,
             attributes=attributes,
-            fill_value=0,
         )
 
+        #initialise flags to zero (instead of fillvalue)
+        variable.values=0*variable.values
+
         # add flag attributes
         variable.attrs["flag_meanings"] = (
             str(meanings)[1:-1].replace("'", "").replace(",", "")

obsarray/templater/dataset_util.py

@@ -256,10 +256,12 @@ def create_flags_variable(
             dim_sizes,
             data_type,
             dim_names=dim_names,
-            fill_value=0,
             attributes=attributes,
         )
 
+        #initialise flags to zero (instead of fillvalue)
+        variable.values=0*variable.values
+
         # add flag attributes
         variable.attrs.update(DatasetUtil.pack_flag_attrs(meanings))