def update_frame(self, key, ranges=None, plot=None):
        """
        Updates an existing plot with data corresponding
        to the key.
        """
        element = self._get_frame(key)
        text, _, _ = self.get_data(element, ranges, {})
        self.handles['plot'].text = text
def update_frame ( self , key , ranges = None , plot = None ) : element = self . _get_frame ( key ) text , _ , _ = self . get_data ( element , ranges , { } ) self . handles [ 'plot' ] . text = text
Updates an existing plot with data corresponding
        to the key.