Bug in circle patch plotting when using the same patch for two different figures #3776
Description
The following code:
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import Circle
image = np.random.random((10,10))
c = Circle((5., 5.), 3.)
fig = plt.figure()
ax = fig.add_subplot(1,1,1)
ax.imshow(image, interpolation='nearest', vmin=-2., vmax=3.)
ax.add_patch(c)
fig.savefig('nearest.png')
fig = plt.figure()
ax = fig.add_subplot(1,1,1)
ax.imshow(image, vmin=-2., vmax=3.)
ax.add_patch(c)
fig.savefig('default.png')
produces the following two figures:
nearest.png [looks correct]
default.png [definitely doesn't look correct]
This is with the latest developer version of Matplotlib with Python 3.4.
[cc @cdeil @bsipocz @larrybradley - this is the issue that is causing https://github.com/astropy/photutils/pull/114#issuecomment-48383187]