-/* Return the index for variable N */
-int categoricals_index (const struct categoricals *cat, size_t n, const union value *val);
+/*
+ Return the total number of variables which participated in these categoricals.
+ Due to the possibility of missing values, this is NOT necessarily
+ equal to the number of variables passed in when the object was
+ created.
+*/
+size_t categoricals_get_n_variables (const struct categoricals *cat);
+
+void categoricals_done (const struct categoricals *cat);
+
+const struct variable * categoricals_get_variable_by_subscript (const struct categoricals *cat, int subscript);
+
+const union value * categoricals_get_value_by_subscript (const struct categoricals *cat, int subscript);
+
+double categoricals_get_weight_by_subscript (const struct categoricals *cat, int subscript);
+
+double categoricals_get_sum_by_subscript (const struct categoricals *cat, int subscript);
+
+double categoricals_get_binary_by_subscript (const struct categoricals *cat, int subscript,
+ const struct ccase *c);
+
+void * categoricals_get_user_data_by_subscript (const struct categoricals *cat, int subscript);
+
+
+
+