def ms_panset(self, viewer, event, data_x, data_y,
                  msg=True):
        """An interactive way to set the pan position.  The location
        (data_x, data_y) will be centered in the window.
        """
        if self.canpan and (event.state == 'down'):
            self._panset(viewer, data_x, data_y, msg=msg)
        return True
An interactive way to set the pan position.  The location
        (data_x, data_y) will be centered in the window.