TGIS_Viewer.UseRTree property

DK for Delphi | GisViewer.TGIS_Viewer.UseRTree | Constructors | Fields | Methods | Properties | Events | Events

True if an RTree spatial index will be used by default when a layer is created.

Available also on: .NET | Java | ActiveX | Python.

// Delphi
published
  property UseRTree : Boolean read write default True;

// C++ Builder
published:
  __property bool UseRTree = {read, write, default=True};

USAGE: Enable RTree spatial indexing for new layers. Accelerates spatial queries like selection and intersection tests. Recommended for large datasets.

gis.UseRTree = true
layer = gis.Add(...)
# New layer uses RTree for fast queries

• Viewer sample