Upper_bound
Geometric functions upper_bound
syntax
- upper_bound(polygon_data_item)
definition
upper_bound(polygon_data_item) results in a Point Data item with the highest X and Y value of the points in the polygon_data_item.
In the Dutch RD coordinate system, the upper_bound is the top right coordinate.
applies to
data item polygon_data_item with fpoint or dpoint Value type and composition type polygon
example
attribute<point_rd> ub (district) := upper_bound(district/geometry);
| district/geometry | ub |
|---|---|
| {21: xy(113810; 403025) … | xy(113810; 403552) |
| {17: xy(113269; 400990) … | xy(113291; 401597) |
| {19: xy(115099; 401238) … | xy(115164; 401642) |
domain district, nr of rows = 3