Merge pull request #8566 from shoyer/fix-default-cmap

Switch default colormap for scatterplot to 'Greys'

Author: jreback

pandas/tests/test_graphics.py

@@ -1605,8 +1605,8 @@ def test_plot_scatter_with_c(self):
  axes = [df.plot(kind='scatter', x='x', y='y', c='z'),
  df.plot(kind='scatter', x=0, y=1, c=2)]
  for ax in axes:
- # default to RdBu
- self.assertEqual(ax.collections[0].cmap.name, 'RdBu')
+ # default to Greys
+ self.assertEqual(ax.collections[0].cmap.name, 'Greys')
 
  if self.mpl_ge_1_3_1:
 

pandas/tools/plotting.py

@@ -1405,7 +1405,7 @@ def _make_plot(self):
  cb = self.kwds.pop('colorbar', self.colormap or c in self.data.columns)
 
  # pandas uses colormap, matplotlib uses cmap.
- cmap = self.colormap or 'RdBu'
+ cmap = self.colormap or 'Greys'
  cmap = plt.cm.get_cmap(cmap)
 
  if c is None: