Issue with 3D scatter plot

[crowoy]

I'm currently using GridSpec to plot several 3D scatter plots, with a shared colorbar on the side. The figure looks like this:

The figure runs, displays, and saves to PNG without error. I've attempted to save it with matplotlib2tikz and get the following output:

-----------------------------
AssertionErrorTraceback (most recent call last)
<ipython-input-15-f74e745fd30a> in <module>()
----> 1 plot_3d('rmse_test_close', 'RMSE', 'low')

<ipython-input-14-d24942c6990d> in plot_3d(metric, metric_name, best_dir)
     58 
     59     plt.savefig(dir_results + metric_name + '.png')
---> 60     tikz_save(dir_results + metric_name + '.tex')
     61     plt.show()

/Users/xxx/anaconda/lib/python2.7/site-packages/matplotlib2tikz/save.pyc in save(*args, **kwargs)
    195     '''
    196     encoding = kwargs.pop('encoding', None)
--> 197     code = get_tikz_code(*args, **kwargs)
    198     file_handle = codecs.open(args[0], 'w', encoding)
    199     try:

/Users/xxx/anaconda/lib/python2.7/site-packages/matplotlib2tikz/save.pyc in get_tikz_code(filepath, figure, figurewidth, figureheight, textsize, tex_relative_path_to_data, strict, wrap, axis_environment, extra_axis_parameters, extra_tikzpicture_parameters, dpi, show_info)
    158 
    159     # gather the file content
--> 160     data, content = _recurse(data, figure)
    161 
    162     # Check if there is still an open groupplot environment. This occurs if not

/Users/xxx/anaconda/lib/python2.7/site-packages/matplotlib2tikz/save.pyc in _recurse(data, obj)
    278                 data['extra axis options [base]'].copy()
    279 
--> 280             ax = axes.Axes(data, child)
    281             if not ax.is_colorbar:
    282                 # Run through the child objects, gather the content.

/Users/xxx/anaconda/lib/python2.7/site-packages/matplotlib2tikz/axes.pyc in __init__(self, data, obj)
    148             pass
    149         else:
--> 150             assert yaxis_pos == 'right'
    151             self.axis_options.append('axis y line=right')
    152 

AssertionError: 

[nschloe]

3D plots aren't supported; see #119. This is because of an issue in mpl, see matplotlib/matplotlib#7243.

[strpeter]

Can you please write in the readme or wiki that you don't support 3d plots? It took me a while of debugging to find it out. Thanks! ;)

[nschloe]

@strpeter Will do for the next release.