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BUG: Fix regression for RGB(A) color arguments #16701

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Merged
merged 5 commits into from
Jun 16, 2017
Merged

BUG: Fix regression for RGB(A) color arguments #16701

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0873721
Add test
kjford Jun 15, 2017
4e40100
Pass tuples that are RGB or RGBA like in list
kjford Jun 15, 2017
9fa9971
Update what's new
kjford Jun 15, 2017
1d7767c
change whatsnew to reflect regression fix
kjford Jun 15, 2017
d61d17a
Add test for RGBA as well
kjford Jun 15, 2017
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2 changes: 1 addition & 1 deletion doc/source/whatsnew/v0.20.3.txt
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Expand Up @@ -59,7 +59,7 @@ I/O

Plotting
^^^^^^^^

- Fix regression in series plotting that prevented RGB and RGBA tuples from being used as color arguments (:issue:`16233`)



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5 changes: 5 additions & 0 deletions pandas/plotting/_core.py
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Expand Up @@ -187,6 +187,11 @@ def _validate_color_args(self):
# support series.plot(color='green')
self.kwds['color'] = [self.kwds['color']]

if ('color' in self.kwds and isinstance(self.kwds['color'], tuple) and
self.nseries == 1 and len(self.kwds['color']) in (3, 4)):
# support RGB and RGBA tuples in series plot
self.kwds['color'] = [self.kwds['color']]

if ('color' in self.kwds or 'colors' in self.kwds) and \
self.colormap is not None:
warnings.warn("'color' and 'colormap' cannot be used "
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6 changes: 6 additions & 0 deletions pandas/tests/plotting/test_frame.py
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Expand Up @@ -158,6 +158,12 @@ def test_color_single_series_list(self):
df = DataFrame({"A": [1, 2, 3]})
_check_plot_works(df.plot, color=['red'])

def test_rgb_tuple_color(self):
# GH 16695
df = DataFrame({'x': [1, 2], 'y': [3, 4]})
_check_plot_works(df.plot, x='x', y='y', color=(1, 0, 0))
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can you add the same but with the 4-len tuple as well?

_check_plot_works(df.plot, x='x', y='y', color=(1, 0, 0, 0.5))

def test_color_empty_string(self):
df = DataFrame(randn(10, 2))
with pytest.raises(ValueError):
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