fix bad no-data check (get_model_and_obs_clim_stats*.m)

src/Applications/LDAS_App/util/inputs/obs_scaling_params/get_model_and_obs_clim_stats.m

@@ -419,10 +419,9 @@
             ] =                     ...
                 read_ObsFcstAna( fname );
 
-            % remove tiles when there is no obs_fcst (obs_fcst == 0 in innov output when
-            % missing)
+            % remove tiles where obs_fcst is no-data (note: read_ObsFcstAna() returns NaN)
 
-            idx = find(obs_fcst == 0);
+            idx = isnan(obs_fcst);
 
             obs_assim(  idx) = [];
             obs_species(idx) = [];

src/Applications/LDAS_App/util/inputs/obs_scaling_params/get_model_and_obs_clim_stats_latlon_grid.m

@@ -157,8 +157,9 @@
           fclose(ifp);
           [date_time, obs_assim, obs_species, obs_tilenum, obs_lon, obs_lat, obs_obs, obs_obsvar, obs_fcst, obs_fcstvar, obs_ana, obs_anavar] = read_ObsFcstAna(fname);
 
-          % remove tiles when there is no obs_fcst (obs_fcst == 0 in innov output when missing)
-          idx = find(obs_fcst == 0);
+          % remove tiles where obs_fcst is no-data (note: read_ObsFcstAna() returns NaN)
+
+          idx = isnan(obs_fcst);
 
           obs_assim(  idx) = [];
           obs_species(idx) = [];