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Added center and frame arguments for pie-charts #2931

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Added center and frame arguments for pie-charts #2931

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32 changes: 31 additions & 1 deletion examples/pie_and_polar_charts/pie_demo_features.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,6 @@
"""
import matplotlib.pyplot as plt


# The slices will be ordered and plotted counter-clockwise.
labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'
sizes = [15, 30, 45, 10]
Expand All @@ -29,4 +28,35 @@
autopct='%1.1f%%', shadow=True, startangle=90)
# Set aspect ratio to be equal so that pie is drawn as a circle.
plt.axis('equal')

fig = plt.figure()
ax = fig.gca()
import numpy as np

ax.pie(np.random.random(4), explode=explode, labels=labels, colors=colors,
autopct='%1.1f%%', shadow=True, startangle=90,
radius=0.25, center=(0,0),frame=True)
ax.pie(np.random.random(4), explode=explode, labels=labels, colors=colors,
autopct='%1.1f%%', shadow=True, startangle=90,
radius=0.25, center=(1,1),frame=True)
ax.pie(np.random.random(4), explode=explode, labels=labels, colors=colors,
autopct='%1.1f%%', shadow=True, startangle=90,
radius=0.25, center=(0,1),frame=True)
ax.pie(np.random.random(4), explode=explode, labels=labels, colors=colors,
autopct='%1.1f%%', shadow=True, startangle=90,
radius=0.25, center=(1,0),frame=True)

ax.set_xticks([0,1])
ax.set_yticks([0,1])
ax.set_xticklabels(["Sunny","Cloudy"])
ax.set_yticklabels(["Dry","Rainy"])
ax.set_xlim((-0.5,1.5))
ax.set_ylim((-0.5,1.5))

# Set aspect ratio to be equal so that pie is drawn as a circle.
ax.set_aspect('equal')




plt.show()
25 changes: 17 additions & 8 deletions lib/matplotlib/axes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5312,7 +5312,8 @@ def stem(self, *args, **kwargs):

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,
center = (0, 0), frame=False ):
r"""
Plot a pie chart.

Expand All @@ -5321,7 +5322,8 @@ def pie(self, x, explode=None, labels=None, colors=None,
pie(x, explode=None, labels=None,
colors=('b', 'g', 'r', 'c', 'm', 'y', 'k', 'w'),
autopct=None, pctdistance=0.6, shadow=False,
labeldistance=1.1, startangle=None, radius=None)
labeldistance=1.1, startangle=None, radius=None,
center = (0, 0) )

Make a pie chart of array *x*. The fractional area of each
wedge is given by x/sum(x). If sum(x) <= 1, then the values
Expand Down Expand Up @@ -5366,6 +5368,12 @@ def pie(self, x, explode=None, labels=None, colors=None,
*radius*: [ *None* | scalar ]
The radius of the pie, if *radius* is *None* it will be set to 1.

*center*: [ (0,0) | sequence of 2 scalars ]
Center position of the chart.

*frame*: [ *False* | *True* ]
Plot axes frame with the chart.

The pie chart will probably look best if the figure and axes are
square, or the Axes aspect is equal. e.g.::

Expand All @@ -5391,7 +5399,6 @@ def pie(self, x, explode=None, labels=None, colors=None,
:class:`~matplotlib.text.Text` instances for the numeric
labels.
"""
self.set_frame_on(False)

x = np.asarray(x).astype(np.float32)

Expand All @@ -5408,7 +5415,7 @@ def pie(self, x, explode=None, labels=None, colors=None,
if colors is None:
colors = ('b', 'g', 'r', 'c', 'm', 'y', 'k', 'w')

center = 0, 0

if radius is None:
radius = 1

Expand Down Expand Up @@ -5477,10 +5484,12 @@ def pie(self, x, explode=None, labels=None, colors=None,
theta1 = theta2
i += 1

self.set_xlim((-1.25, 1.25))
self.set_ylim((-1.25, 1.25))
self.set_xticks([])
self.set_yticks([])
if not frame:
self.set_frame_on(False)
self.set_xlim((-1.25, 1.25))
self.set_ylim((-1.25, 1.25))
self.set_xticks([])
self.set_yticks([])

if autopct is None:
return slices, texts
Expand Down
4 changes: 2 additions & 2 deletions lib/matplotlib/pyplot.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2955,7 +2955,7 @@ def pcolormesh(*args, **kwargs):
@_autogen_docstring(Axes.pie)
def pie(x, explode=None, labels=None, colors=None, autopct=None,
pctdistance=0.6, shadow=False, labeldistance=1.1, startangle=None,
radius=None, hold=None):
radius=None, hold=None,center=(0,0),frame=False):
ax = gca()
# allow callers to override the hold state by passing hold=True|False
washold = ax.ishold()
Expand All @@ -2966,7 +2966,7 @@ def pie(x, explode=None, labels=None, colors=None, autopct=None,
ret = ax.pie(x, explode=explode, labels=labels, colors=colors,
autopct=autopct, pctdistance=pctdistance, shadow=shadow,
labeldistance=labeldistance, startangle=startangle,
radius=radius)
radius=radius,center=center,frame=frame)
draw_if_interactive()
finally:
ax.hold(washold)
Expand Down