code: def point_cloud(df, columns=[0, 1, 2]):
      
      df = df if isinstance(df, pd.DataFrame) else pd.DataFrame(df)
      if not all(c in df.columns for c in columns):
          columns = list(df.columns)[:3]
  
      fig = plt.figure()
      ax = fig.add_subplot(111, projection='3d')  # noqa
      Axes3D.scatter(*[df[columns[i]] for i in range(3)], zdir='z', s=20, c=None, depthshade=True)
      return ax
docs: 3-D Point cloud for plotting things like mesh models of horses ;)