IPython中无法绘制3D散点图

Question

当我尝试绘制一个三维散点图per the instructions here，我得到以下错误：

In [10]: Traceback (most recent call last): 
    File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_qt5agg.py", line 176, in __draw_idle_agg 
    FigureCanvasAgg.draw(self) 
    File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_agg.py", line 474, in draw 
    self.figure.draw(self.renderer) 
    File "/usr/local/lib/python2.7/dist-packages/matplotlib/artist.py", line 61, in draw_wrapper 
    draw(artist, renderer, *args, **kwargs) 
    File "/usr/local/lib/python2.7/dist-packages/matplotlib/figure.py", line 1159, in draw 
    func(*args) 
    File "/usr/local/lib/python2.7/dist-packages/mpl_toolkits/mplot3d/axes3d.py", line 271, in draw 
    for col in self.collections] 
    File "/usr/local/lib/python2.7/dist-packages/mpl_toolkits/mplot3d/art3d.py", line 455, in do_3d_projection 
    xs, ys, zs = self._offsets3d 
AttributeError: 'Path3DCollection' object has no attribute '_offsets3d' 

If you suspect this is an IPython bug, please report it at: 
    https://github.com/ipython/ipython/issues 
or send an email to the mailing list at ipython-dev@scipy.org 

You can print a more detailed traceback right now with "%tb", or use "%debug" 
to interactively debug it. 

Extra-detailed tracebacks for bug-reporting purposes can be enabled via: 
    %config Application.verbose_crash=True 

以前我使用PyQt4的时候得到这个错误。我花了几个小时安装PyQt5（在我的Ubuntu版本上很难）。现在开始ipython与

ipython --pylab='qt5' 

我预计它会工作，但再次尝试绘图时得到相同的错误信息。

请注意，当我调用scatter方法时会发生这种情况。然后，直到我结束这个数字，每次我在ipython中输入时它都会继续给出相同的回溯。

任何想法，我可能做错了什么？

Answer 1

看来我发现了这个问题。 I was passing some keyword arguments到scatter()而没有**。

Argh。