I am trying to use the path object (see
http://matplotlib.sourceforge.net/users/path_tutorial.html).
This is code taken from the tutorial (with one change to show the
resulting png file). The code works fine in python, but cuts off
about the bottom fifth of the graphic in Sage. I have published this
at
http://sagenb.org/home/pub/1648/
Thanks.
-Bruce
ps. I am including the code, but I am not sure whether it is better to
just point to the published notebook and cut down on the length of
this post.
## begin code
import matplotlib.pyplot as plt
from matplotlib.path import Path
import matplotlib.patches as patches
verts = [
(0., 0.), # P0
(0.2, 1.), # P1
(1., 0.8), # P2
(0.8, 0.), # P3
]
codes = [Path.MOVETO,
Path.CURVE4,
Path.CURVE4,
Path.CURVE4,
]
path = Path(verts, codes)
fig = plt.figure()
ax = fig.add_subplot(111)
patch = patches.PathPatch(path, facecolor='none', lw=2)
ax.add_patch(patch)
xs, ys = zip(*verts)
ax.plot(xs, ys, 'x--', lw=2, color='black', ms=10)
ax.text(-0.05, -0.05, 'P0')
ax.text(0.15, 1.05, 'P1')
ax.text(1.05, 0.85, 'P2')
ax.text(0.85, -0.05, 'P3')
ax.set_xlim(-0.1, 1.1)
ax.set_ylim(-0.1, 1.1)
#plt.show()
plt.savefig('bezier.png')
## end code
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