Warning g_relation_count has been deprecated since version 2.26 and should not be used in newly-written code. Rarely used API Returns the number of tuples in a GRelation that have the given value in the given field.
the value to compare with.
the field of each record to match.
the number of matches.
See Implementation
Warning g_relation_count has been deprecated since version 2.26 and should not be used in newly-written code. Rarely used API Returns the number of tuples in a GRelation that have the given value in the given field.