def METHOD_NAME(self):
    emp = scatterplot(self.df, x='num_3', y='num_2', z='num_1',
                      remote=self.url)
    self.assertTrue(isinstance(emp, Emperor))
    self.assertEqual(emp.dimensions, 4)
    self.assertEqual(emp.base_url, 'https://cdn.rawgit.com/biocore/'
                     'emperor/new-api/emperor/support_files')
    pd.util.testing.assert_frame_equal(self.df, emp.mf)
    reordered = self.samples[['num_3', 'num_2', 'num_1', 'num_4']].copy()
    pd.util.testing.assert_frame_equal(emp.ordination.samples,
                                       reordered)