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Backport PR #27397 on branch v3.8.x (SpanSelector widget: Improve doc for extents) #27446

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7 changes: 6 additions & 1 deletion lib/matplotlib/widgets.py
Original file line number Diff line number Diff line change
Expand Up @@ -2915,7 +2915,12 @@ def _snap(values, snap_values):

@property
def extents(self):
"""Return extents of the span selector."""
"""
(float, float)
The values, in data coordinates, for the start and end points of the current
selection. If there is no selection then the start and end values will be
the same.
"""
if self.direction == 'horizontal':
vmin = self._selection_artist.get_x()
vmax = vmin + self._selection_artist.get_width()
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