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Description
Bug summary
This is just a very minor bug I noticed...
When using a QuadMesh without setting an array, the get_cursor_data function throws an error because it does not check if an array has been set.
This is somewhat connected to #22334 but this is just about the case when no array has been set.
Code for reproduction
import matplotlib.pyplot as plt
from matplotlib.collections import QuadMesh
import numpy as np
x, y = np.linspace([-1.5, -1.5], [1.5, 1.5], 20).T
X, Y = np.meshgrid(x, y)
coll = QuadMesh(np.stack((X, Y), axis=2))
f, ax = plt.subplots()
ax.add_collection(coll)Actual outcome
TypeError: 'NoneType' object is not subscriptable
Traceback (most recent call last):
File "...\matplotlib\cbook\__init__.py", line 287, in process
func(*args, **kwargs)
File "...\matplotlib\backend_bases.py", line 3061, in mouse_move
s = self._mouse_event_to_message(event)
File "...\matplotlib\backend_bases.py", line 3051, in _mouse_event_to_message
data = a.get_cursor_data(event)
File "...\matplotlib\collections.py", line 2214, in get_cursor_data
return self.get_array()[ind]
TypeError: 'NoneType' object is not
Expected outcome
no error
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Matplotlib Version
3.5.1
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