issue_comments: 223520490

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https://github.com/pydata/xarray/issues/866#issuecomment-223520490 https://api.github.com/repos/pydata/xarray/issues/866 223520490 MDEyOklzc3VlQ29tbWVudDIyMzUyMDQ5MA== 10050469 2016-06-03T08:26:00Z 2016-06-03T08:26:00Z MEMBER

Here's a mwe:

``` python import numpy as np import matplotlib.pyplot as plt import xarray as xr

x, y = np.meshgrid(np.arange(12), np.arange(12)) z = xr.DataArray(x2 + y2) z.plot.contour(levels=[10], add_colorbar=False) ```

which indeed doesn't plot anything.

Note that without add_colorbar=False, it crashes with:

python Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/xarray/plot/plot.py", line 452, in plotmethod return newplotfunc(**allargs) File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/xarray/plot/plot.py", line 426, in newplotfunc cbar = plt.colorbar(primitive, ax=ax, extend=cmap_params['extend']) File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/matplotlib/pyplot.py", line 2237, in colorbar ret = gcf().colorbar(mappable, cax = cax, ax=ax, **kw) File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/matplotlib/figure.py", line 1595, in colorbar cb = cbar.colorbar_factory(cax, mappable, **kw) File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/matplotlib/colorbar.py", line 1330, in colorbar_factory cb = Colorbar(cax, mappable, **kwargs) File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/matplotlib/colorbar.py", line 895, in __init__ ColorbarBase.__init__(self, ax, **kw) File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/matplotlib/colorbar.py", line 323, in __init__ self.draw_all() File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/matplotlib/colorbar.py", line 346, in draw_all X, Y = self._mesh() File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/matplotlib/colorbar.py", line 812, in _mesh y = self._uniform_y(self._central_N()) File "/home/mowglie/.pyvirtualenvs/oggm_pycharm/lib/python3.4/site-packages/matplotlib/colorbar.py", line 749, in _uniform_y automin = automax = 1. / (N - 1.) ZeroDivisionError: float division by zero

 
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