BUG: index needs to be casted to ndarray in Series.plot

Author: wesm

pandas/core/series.py

@@ -1182,7 +1182,7 @@ def plot(self, label=None, kind='line', use_index=True, rot=30, ax=None,
 
         if kind == 'line':
             if use_index:
-                x = self.index
+                x = np.asarray(self.index)
             else:
                 x = range(len(self))