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ylim=0.0 is not well handled in polar plots - #1603
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Dec 17, 2012
ylim=0.0 is not well handled in polar plots
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As you can see in the following source example, when set_xlim(0.0,5) is called, negatives values are still plotted in the polar plot. Whereas if set_xlim(0.01,5) or set_xlim(-0.01,5) are called, the drawing are as expected.
from matplotlib.pyplot import figure, show
import numpy as np
x = np.arange(0,1,0.001)
y = np.arange(-2.0,0.0, 0.002)
fig = figure()
ax = fig.add_subplot(131, polar=True)
ax.plot(x, y)
ax.set_ylim(bottom= 0.0, top=5)
ax = fig.add_subplot(132, polar=True)
ax.plot(x, y)
ax.set_ylim(bottom= 0.01, top=5)
ax = fig.add_subplot(133, polar=True)
ax.plot(x, y)
ax.set_ylim(bottom= -0.01, top=5)
fig.show()
raw_input()