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Description
Bug report
Bug summary
Some of the ConnectionStyle styles seem to be failing for me. When I run the below code only some of the connectors work:
Code for reproduction
import matplotlib.pyplot as plt
import matplotlib.patches as mpatches
styles = mpatches.ConnectionStyle.get_styles()
n = len(styles)
fig, ax = plt.subplots(figsize=(6, 10))
ax.set_xlim(0, 1)
ax.set_ylim(-1, n)
for i, stylename in enumerate(sorted(styles)):
patch = mpatches.FancyArrowPatch((0.1, i), (0.8, i + 0.5),
connectionstyle=stylename,
mutation_scale=25)
try:
ax.add_patch(patch)
print(stylename)
except ValueError as err:
print(stylename, err)
plt.show()Actual outcome
angle 'path' it's not a valid quadratic bezier curve
angle3
arc 'path' it's not a valid quadratic bezier curve
arc3
bar 'path' it's not a valid quadratic bezier curve
The specific traceback in one case is:
Traceback (most recent call last):
File "test.py", line 16, in <module>
ax.add_patch(patch)
File "/Users/dstansby/github/matplotlib/lib/matplotlib/axes/_base.py", line 1834, in add_patch
self._update_patch_limits(p)
File "/Users/dstansby/github/matplotlib/lib/matplotlib/axes/_base.py", line 1852, in _update_patch_limits
vertices = patch.get_path().vertices
File "/Users/dstansby/github/matplotlib/lib/matplotlib/patches.py", line 4322, in get_path
_path, fillable = self.get_path_in_displaycoord()
File "/Users/dstansby/github/matplotlib/lib/matplotlib/patches.py", line 4352, in get_path_in_displaycoord
self.get_mutation_aspect())
File "/Users/dstansby/github/matplotlib/lib/matplotlib/patches.py", line 3274, in __call__
return self.transmute(path, mutation_size, linewidth)
File "/Users/dstansby/github/matplotlib/lib/matplotlib/patches.py", line 3787, in transmute
x0, y0, x1, y1, x2, y2 = self.ensure_quadratic_bezier(path)
File "/Users/dstansby/github/matplotlib/lib/matplotlib/patches.py", line 3223, in ensure_quadratic_bezier
raise ValueError(msg)
ValueError: 'path' it's not a valid quadratic bezier curve
Expected outcome
Expected them all to work
Matplotlib version
- Operating system: OSX
- Matplotlib version:
masterbranch - Matplotlib backend (
print(matplotlib.get_backend())): macosx - Python version: 3.6.2
- Jupyter version (if applicable):
- Other libraries:
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