bg_split_union_polygon - ObjectVision/GeoDMS GitHub Wiki

Geometric functions bg_split_union_polygon

• bg_split_union_polygon(polygon_data_item)
• bg_split_union_polygon(polygon_data_item, relation)

bg_split_union_polygon(polygon_data_item, relation) results in a new uint32 domain unit with single polygons for each (multi)polygon in the polygon_data_item argument, and also dissolves over the relation.

1. The composition type of the polygon_data_item argument needs to be polygon with an ipoint, spoint, fpoint, or dpoint value type.
2. The domain unit of the polygon_data_item argument must be of value type uint32.

• bg_split_union_polygon(D->*P)-> S { geometry: S->*P }
• bg_split_union_polygon(D->*P, part_rel:D->R)-> S { geometry: S->*P, part_rel->S->R }

where P is a GeoDms point type with signed integer coordinates, i.e. 16, 32, or 64-bit signed integers. S is the resulting uint32 set of split polygons, D is the domain of the argument, and R is the values unit of the partitioning part_rel.

15.6.0

unit<uint32> split_dissolve := bg_split_union_polygon(multipolygon/geometry);
unit<uint32> split_dissolve := bg_split_union_polygon(multipolygon/geometry, multipolygon/regio_rel));

• bg_union_polygon
• bg_split_polygon