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matplotlib.axis.YTick.get_cursor_data
YTick.get_cursor_data(self, event)- 
    
Return the cursor data for a given event.
Note
This method is intended to be overridden by artist subclasses. As an end-user of Matplotlib you will most likely not call this method yourself.
Cursor data can be used by Artists to provide additional context information for a given event. The default implementation just returns None.
Subclasses can override the method and return arbitrary data. However, when doing so, they must ensure that
format_cursor_datacan convert the data to a string representation.The only current use case is displaying the z-value of an
AxesImagein the status bar of a plot window, while moving the mouse.Parameters: - 
           
eventmatplotlib.backend_bases.MouseEvent 
See also
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 https://matplotlib.org/3.2.2/api/_as_gen/matplotlib.axis.YTick.get_cursor_data.html