Spatial Filter Methods

The following methods control Named Spatial Filter objects. A Named Spatial Filter is an object which includes or excludes items based on their position and geometry.

Named Spatial Filter objects can be applied to overlays to control the visibility of the items in that overlay: only items which pass are drawn, all other items become temporarily invisible.

In addition, many SIS Desktop methods, e.g. Scan, accept a Named Spatial Filter as an argument.

Named Spatial Filter objects can be saved in, and loaded from, Named Object Libraries. Named Spatial Filter objects can be created, edited and set using the methods below.

Changes geometrical test performed by named Spatial Filter object.
Creates a named Spatial Filter by combining two named spatial filters using a Boolean operation.
Creates a Polygon or QZone item surrounding the items in named list.
Creates a named buffer Spatial Filter around items in a named list.
Creates a named circular Spatial Filter.
Creates an item from a named Spatial Filter.
Creates a named Spatial Filter from the current open item.
Creates a named rectangular Spatial Filter.
Gets a copy of an overlay drawing Spatial Filter.
Creates a named Spatial Filter by intersecting two existing loci.
Applies a copy of a named Spatial Filter to an overlay in the current SWD.