Add (union)

Geometric functions add (union)

syntax

• add(polygon_data_itemA, polygon_data_itemB)
• polygon_data_itemA + polygon_data_itemB

description

add(polygon_data_itemA, polygon_data_itemB) or polygon_data_itemA + polygon_data_itemB results in a new multi polygon data item with the union of the two polygon_data_itemA and polygon_data_itemB data items.

applies to

data items polygon_data_itemA and polygon_data_itemB with an ipoint or spoint value type.

conditions

1. The composition type of the arguments needs to be polygon.
2. The domain unit of the arguments must match or be void.

since version

7.112

example

parameter<ipoint> NorthHolland (poly) := Land/geometry + Texel/geometry;

see also

• union_polygon (dissolve)
• add