added nearest to resample + test

Author: ab320012

pandas/core/resample.py

@@ -480,6 +480,22 @@ def backfill(self, limit=None):
         return self._upsample('backfill', limit=limit)
     bfill = backfill
 
+    def nearest(self, limit=None):
+        """
+        Backward or forward fill values
+        Parameters
+        ----------
+        limit : integer, optional
+            limit of how many values to fill
+
+        See Also
+        --------
+        Series.fillna
+        DataFrame.fillna
+        """
+        return self._upsample('nearest', limit=limit)
+    nearest = nearest
+
     def fillna(self, method, limit=None):
         """
         Fill missing values

pandas/tests/test_resample.py

@@ -2960,7 +2960,7 @@ def test_methods(self):
             expected = g.B.apply(lambda x: getattr(x.resample('2s'), f)())
             assert_series_equal(result, expected)
 
-        for f in ['backfill', 'ffill', 'asfreq']:
+        for f in ['nearest', 'backfill', 'ffill', 'asfreq']:
             result = getattr(r, f)()
             expected = g.apply(lambda x: getattr(x.resample('2s'), f)())
             assert_frame_equal(result, expected)