int uc_get_rate_by_name(const char *name, gauge_t **ret_values,
size_t *ret_values_num);
gauge_t *uc_get_rate(const data_set_t *ds, const value_list_t *vl);
+int uc_get_value_by_name(const char *name, value_t **ret_values, size_t *ret_values_num);
+value_t *uc_get_value(const data_set_t *ds, const value_list_t *vl);
size_t uc_get_size(void);
int uc_get_names(char ***ret_names, cdtime_t **ret_times, size_t *ret_number);
size_t *ret_num);
/* Return the interval of the value at the current position. */
int uc_iterator_get_interval(uc_iter_t *iter, cdtime_t *ret_interval);
+/* Return the metadata for the value at the current position. */
+int uc_iterator_get_meta(uc_iter_t *iter, meta_data_t **ret_meta);
/*
* Meta data interface