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added axvlines_color parameter to parallel_coordinates #10709

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added axvlines_color parameter to parallel_coordinates #10709

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1 change: 1 addition & 0 deletions doc/source/whatsnew/v0.17.1.txt
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Expand Up @@ -25,6 +25,7 @@ Enhancements
objects for the ``filepath_or_buffer`` argument. (:issue:`11033`)
- ``DataFrame`` now uses the fields of a ``namedtuple`` as columns, if columns are not supplied (:issue:`11181`)
- Improve the error message displayed in :func:`pandas.io.gbq.to_gbq` when the DataFrame does not match the schema of the destination table (:issue:`11359`)
- Added ``axvlines_kwds`` to parallel coordinates plot (:issue: `10709`)

.. _whatsnew_0171.api:

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6 changes: 4 additions & 2 deletions pandas/tools/plotting.py
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Expand Up @@ -638,7 +638,7 @@ def bootstrap_plot(series, fig=None, size=50, samples=500, **kwds):
@deprecate_kwarg(old_arg_name='data', new_arg_name='frame', stacklevel=3)
def parallel_coordinates(frame, class_column, cols=None, ax=None, color=None,
use_columns=False, xticks=None, colormap=None,
axvlines=True, **kwds):
axvlines=True, axvlines_kwds={'linewidth':1,'color':'black'}, **kwds):
"""Parallel coordinates plotting.

Parameters
Expand All @@ -660,6 +660,8 @@ def parallel_coordinates(frame, class_column, cols=None, ax=None, color=None,
Colormap to use for line colors.
axvlines: bool, optional
If true, vertical lines will be added at each xtick
axvlines_kwds: keywords, optional
Options to be passed to axvline method for vertical lines
kwds: keywords
Options to pass to matplotlib plotting method

Expand Down Expand Up @@ -726,7 +728,7 @@ def parallel_coordinates(frame, class_column, cols=None, ax=None, color=None,

if axvlines:
for i in x:
ax.axvline(i, linewidth=1, color='black')
ax.axvline(i, **axvlines_kwds)

ax.set_xticks(x)
ax.set_xticklabels(df.columns)
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