13 void *(*plot_init)(const char *);
14 plotid_t (*plot_new)(void *, enum plot_type, const char *);
15 int (*plot_histogram)(void *, plotid_t, double);
16 int (*plot_line)(void *, plotid_t, double, double);
17 int (*plot_finish)(void *);
20 struct plotter *plotter_factory(void);
22 #endif /* _PLOTTER_H_ */