figure_maker.py: fix create_df_summary for barplot

src/visu/figure_maker.py

@@ -237,7 +237,7 @@ def create_df_summary(df_cov: pd.DataFrame, figure_type: str, nb_bin: int,
         df_sum, condition_col = merge_condition_region_col(df_sum)
         return df_sum, condition_col
     if environment[0] != 0:
-        df_sum['location'] = df_cov['bin'].apply(
+        df_sum['location'] = df_sum['bin'].apply(
             lambda x: f"before_{region_name}" if x < 0 else
             f"after_{region_name}" if x >= nb_bin else region_name)
     df_sum.drop('bin', axis=1, inplace=True)