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BUG: scatter plot with error bars broken on master #8081

@shoyer

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@shoyer

This example works on 0.14.1 but not master:

%matplotlib inline import numpy as np import pandas as pd np.random.seed(12345) df = pd.DataFrame(np.random.rand(10, 5), columns=['a', 'b', 'c', 'd', 'e']) df.plot(x='a', y='b', xerr='c', yerr='d', kind='scatter') 

I get:

--------------------------------------------------------------------------- IndexError Traceback (most recent call last) <ipython-input-1-38e437a109be> in <module>() 4 np.random.seed(12345) 5 df = pd.DataFrame(np.random.rand(10, 5), columns=['a', 'b', 'c', 'd', 'e']) ----> 6 df.plot(x='a', y='b', xerr='c', yerr='d', kind='scatter') /Users/shoyer/dev/pandas/pandas/tools/plotting.pyc in plot_frame(frame, x, y, subplots, sharex, sharey, use_index, figsize, grid, legend, rot, ax, style, title, xlim, ylim, logx, logy, xticks, yticks, kind, sort_columns, fontsize, secondary_y, layout, **kwds) 2223 secondary_y=secondary_y, layout=layout, **kwds) 2224 -> 2225 plot_obj.generate() 2226 plot_obj.draw() 2227 return plot_obj.result /Users/shoyer/dev/pandas/pandas/tools/plotting.pyc in generate(self) 911 self._compute_plot_data() 912 self._setup_subplots() --> 913 self._make_plot() 914 self._add_table() 915 self._make_legend() /Users/shoyer/dev/pandas/pandas/tools/plotting.pyc in _make_plot(self) 1402 1403 errors_x = self._get_errorbars(label=x, index=0, yerr=False) -> 1404 errors_y = self._get_errorbars(label=y, index=1, xerr=False) 1405 if len(errors_x) > 0 or len(errors_y) > 0: 1406 err_kwds = dict(errors_x, **errors_y) /Users/shoyer/dev/pandas/pandas/tools/plotting.pyc in _get_errorbars(self, label, index, xerr, yerr) 1362 err = None 1363 elif index is not None and err is not None: -> 1364 err = err[index] 1365 1366 if err is not None: IndexError: index 1 is out of bounds for axis 0 with size 1 

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