Class SpatialIsClosed

Namespace

YndigoBlue.Velocity.Functions

Assembly

YndigoBlue.Velocity.dll

Represents the ST_IsClosed spatial property function that tests whether a linestring or multi-linestring is closed.

public class SpatialIsClosed : Function, IElement, ICheckItem, IDefaultItem, IFilterItem

Inheritance

object

Function

SpatialIsClosed

Implements

IElement

ICheckItem

IDefaultItem

IFilterItem

Remarks

The ST_IsClosed function returns true if the geometry is a linestring or multi-linestring where the start and end points are coincident (the same point), forming a closed loop. For other geometry types, the result may be false or undefined. A closed linestring has identical first and last coordinates. This is distinct from ST_IsRing, which also requires the linestring to be simple (non-self-intersecting). For Geometry types in planar coordinate systems, useful for validating polygon boundaries, detecting loops, or topology analysis. OGC-compliant.

Constructors

SpatialIsClosed(Column)

Initializes a new instance of ST_IsClosed with a geometry column.