Understanding Spatial Indexes in OGC Geopackage files

GeoPackage uses spatial indexes to improve spatial query performance on vector layers. Through a spatial index you can quickly find all the geometries within an area of interest without having to read through all the rows in the table”.

“The RTree Spatial Indexes Extension is such an extension that adds capability to index geometry columns using the rtree implementation provided by the SQLite R*Tree Module extension. The spatial index is established by creating a virtual table and a set of triggers”.

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