Closed
Description
Bug report
Bug summary
In prior versions of matplotlib, it was possible to set all UVC values to the same by calling quiver.set_UVC with single numbers for U and V. This raises an error in matplotlib 3.2.
Code for reproduction
import matplotlib.pyplot as plt
q = plt.quiver(
[0, 0, 1],
[0, 1, 1],
[0.5, 0.5, 0.5],
[0, 0, 0],
)
q.set_UVC(0, 0.5)
plt.xlim(-1, 2)
plt.ylim(-1, 2)
plt.show()Actual outcome
matplotlib 3.1 works as expected, matplotlib 3.2 raises:
q.set_UVC(0, 0.5)
File "/home/maxnoe/.local/anaconda3/lib/python3.7/site-packages/matplotlib/quiver.py", line 604, in set_UVC
raise ValueError(f'Argument {name} has a size {var.size}'
ValueError: Argument U has a size 1 which does not match 3, the number of arrow positions
Expected outcome
No breaking changes between minor revisions.