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Hi! Please, add this feature. My diff in axes.py looks quite simple:
--- /home/sh/Downloads/matplotlib-1.3.1/lib/matplotlib/axes.py 2013-10-10 16:42:48.000000000 +0400
+++ matplotlib/axes.py 2013-10-23 16:52:11.793788510 +0400
@@ -5307,7 +5307,7 @@
def pie(self, x, explode=None, labels=None, colors=None,
autopct=None, pctdistance=0.6, shadow=False,
- labeldistance=1.1, startangle=None, radius=None):
+ labeldistance=1.1, startangle=None, radius=None, counterclock=True):
r"""
Plot a pie chart.
@@ -5420,12 +5420,12 @@
i = 0
for frac, label, expl in cbook.safezip(x, labels, explode):
x, y = center
- theta2 = theta1 + frac
+ theta2 = theta1 + frac if counterclock else theta1 - frac
thetam = 2 * math.pi * 0.5 * (theta1 + theta2)
x += expl * math.cos(thetam)
y += expl * math.sin(thetam)
- w = mpatches.Wedge((x, y), radius, 360. * theta1, 360. * theta2,
+ w = mpatches.Wedge((x, y), radius, 360. * min(theta1, theta2), 360. * max(theta1, theta2),
facecolor=colors[i % len(colors)])
slices.append(w)
self.add_patch(w)
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