BUG: label setting failure in xy plot #2543

Author: changhiskhan

pandas/tests/test_graphics.py

@@ -221,6 +221,15 @@ def test_plot(self):
                        index=index)
         _check_plot_works(df.plot, title=u'\u03A3')
 
+    @slow
+    def test_label(self):
+        import matplotlib.pyplot as plt
+        plt.close('all')
+        df = DataFrame(np.random.randn(10, 3), columns=['a', 'b', 'c'])
+        ax = df.plot(x='a', y='b', label='LABEL', legend=True)
+        self.assert_(ax.get_legend().get_texts()[0].get_text() == 'LABEL')
+        self.assert_(ax.xaxis.get_label().get_text() == 'LABEL')
+
     @slow
     def test_plot_xy(self):
         import matplotlib.pyplot as plt

pandas/tools/plotting.py

@@ -1414,12 +1414,16 @@ def plot_frame(frame=None, x=None, y=None, subplots=False, sharex=True,
     if y is not None:
         if com.is_integer(y) and not frame.columns.holds_integer():
             y = frame.columns[y]
-        return plot_series(frame[y], label=y, kind=kind, use_index=use_index,
+        label = kwds.pop('label', y)
+        ser = frame[y]
+        ser.index.name = label
+        return plot_series(ser, label=label, kind=kind,
+                           use_index=use_index,
                            rot=rot, xticks=xticks, yticks=yticks,
                            xlim=xlim, ylim=ylim, ax=ax, style=style,
                            grid=grid, logy=logy, secondary_y=secondary_y,
                            title=title, figsize=figsize, fontsize=fontsize,
-                           **kwds)
+                           legend=legend, **kwds)
 
     plot_obj = klass(frame, kind=kind, subplots=subplots, rot=rot,
                      legend=legend, ax=ax, style=style, fontsize=fontsize,