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

see also

• lower_bound
• upper_bound