Merge pull request #163 from shakedzy/162-multiple-warning-about-incompatible-dtype-casting-probably-related-to-nan-check

162 multiple warning about incompatible dtype casting probably related to nan check

Author: shakedzy

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Change Log
 
+## 0.7.6
+* Fix issue [#162](https://github.com/shakedzy/dython/issues/162)
+
 ## 0.7.5
 * Adding type hints to all functions (issue [#153](https://github.com/shakedzy/dython/issues/153))
 * Dropping dependency in `scikit-plot` as it is no longer maintained (issue [#156](https://github.com/shakedzy/dython/issues/156))

VERSION

@@ -1 +1 @@
-0.7.5
+0.7.6

dython/nominal.py

@@ -635,7 +635,7 @@ def associations(
     # of the corr dataframe. It is done for visualization purposes, so the heatmap values will remain
     # between -1 and 1
     inf_nan = pd.DataFrame(
-        data=np.zeros_like(corr), columns=columns, index=columns
+        data=np.zeros_like(corr), columns=columns, index=columns, dtype="object"
     )
 
     # finding single-value columns
@@ -903,7 +903,10 @@ def _plot_associations(
         inf_nan_mask = np.ones_like(corr)
     if len(single_value_columns_set) > 0:
         sv = pd.DataFrame(
-            data=np.zeros_like(corr), columns=corr.columns, index=corr.index
+            data=np.zeros_like(corr),
+            columns=corr.columns,
+            index=corr.index,
+            dtype="object",
         )
         for c in single_value_columns_set:
             if c in display_rows and c in display_columns: