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ENH: allow legend='reverse' in df.plot() GH6014 #6118

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Merged
1 commit merged into from Feb 7, 2014
Merged

ENH: allow legend='reverse' in df.plot() GH6014 #6118

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17 changes: 16 additions & 1 deletion pandas/tools/plotting.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1227,6 +1227,15 @@ def _post_plot_logic(self):
if self.legend:
for ax in self.axes:
ax.legend(loc='best')
leg = self.axes[0].get_legend()
if leg is not None:
lines = leg.get_lines()
labels = [x.get_text() for x in leg.get_texts()]

if self.legend == 'reverse':
lines = reversed(lines)
labels = reversed(labels)
ax.legend(lines, labels, loc='best', title=self.legend_title)

class ScatterPlot(MPLPlot):
def __init__(self, data, x, y, **kwargs):
Expand Down Expand Up @@ -1411,6 +1420,9 @@ def _make_legend(self, lines, labels):
ax.legend(ext_lines, ext_labels, loc='best',
title=self.legend_title)
elif self.legend:
if self.legend == 'reverse':
lines = reversed(lines)
labels = reversed(labels)
ax.legend(lines, labels, loc='best', title=self.legend_title)

def _get_ax_legend(self, ax):
Expand Down Expand Up @@ -1567,6 +1579,9 @@ def _make_plot(self):

if self.legend and not self.subplots:
patches = [r[0] for r in rects]
if self.legend == 'reverse':
patches = reversed(patches)
labels = reversed(labels)
self.axes[0].legend(patches, labels, loc='best',
title=self.legend_title)

Expand Down Expand Up @@ -1639,7 +1654,7 @@ def plot_frame(frame=None, x=None, y=None, subplots=False, sharex=True,
Title to use for the plot
grid : boolean, default None (matlab style default)
Axis grid lines
legend : boolean, default True
legend : False/True/'reverse'
Place legend on axis subplots

ax : matplotlib axis object, default None
Expand Down