Don't fail when plotting Series/DataFrame with no row

When Series or DataFrames was empty (no cells) after removing columns
without a suitable type (.select_dtypes), pandas was throwing a "no
numeric data to plot" exception.

This can happen:

1) either because there is no column with a suitable type;

2) or if there is no row.

Raising an exception in the first case makes sense but we should
probably avoid throwing an exception in the second case.

Author: Gabriel Corona

pandas/plotting/_matplotlib/core.py

@@ -418,7 +418,7 @@ def _compute_plot_data(self):
         numeric_data = data.select_dtypes(include=include_type, exclude=exclude_type)
 
         try:
-            is_empty = numeric_data.empty
+            is_empty = numeric_data.columns.empty
         except AttributeError:
             is_empty = not len(numeric_data)