Center_bound
Geometric functions center_bound
syntax
- center_bound(polygon_data_item)
definition
center_bound(polygon_data_item) results in a Point Data item with the center of the bounding box of the polygon_data_item.
applies to
data item polygon_data_item with fpoint or dpoint Value type and composition type polygon
example
attribute<point_rd> cb (district) := center_bound(district/geometry);
| district/geometry | cb |
|---|---|
| {21: xy(113810; 403025) … | xy(113061; 402990) |
| {17: xy(113269; 400990) … | xy(112734; 401207) |
| {19: xy(115099; 401238) … | xy(114026; 401265) |
domain district, nr of rows = 3