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Corrects cursor's Z coordinate display for NonUniformImage #19104

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Corrects cursor's Z coordinate display for NonUniformImage #19104

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14 changes: 13 additions & 1 deletion lib/matplotlib/image.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1008,7 +1008,6 @@ def format_cursor_data(self, data):


class NonUniformImage(AxesImage):
mouseover = False # This class still needs its own get_cursor_data impl.

def __init__(self, ax, *, interpolation='nearest', **kwargs):
"""
Expand Down Expand Up @@ -1132,6 +1131,19 @@ def set_cmap(self, cmap):
raise RuntimeError('Cannot change colors after loading data')
super().set_cmap(cmap)

def get_cursor_data(self, event):
# docstring inherited
x, y = event.xdata, event.ydata
if (x < self._Ax[0] or x > self._Ax[-1] or
y < self._Ay[0] or y > self._Ay[-1]):
return None
j = np.searchsorted(self._Ax, x) - 1
i = np.searchsorted(self._Ay, y) - 1
try:
return self._A[i, j]
except IndexError:
return None


class PcolorImage(AxesImage):
"""
Expand Down