(self, initial_state)
Generate all possible states (e.g. attribute combinations) for the
        given data. The content of the generated states is specific to the
        visualization.

        This method must be defined in the derived classes.

        Args:
            initial_state: initial state; None if this is the first call
Generate all possible states (e.g. attribute combinations) for the
        given data. The content of the generated states is specific to the
        visualization.
Generate all possible states ( e . g . attribute combinations ) for the given data . The content of the generated states is specific to the visualization .
def iterate_states(self, initial_state):
        """
        Generate all possible states (e.g. attribute combinations) for the
        given data. The content of the generated states is specific to the
        visualization.

        This method must be defined in the derived classes.

        Args:
            initial_state: initial state; None if this is the first call
        """
        raise NotImplementedError
def iterate_states ( self , initial_state ) : raise NotImplementedError