Data sources overview

A data source tells a layer where its content comes from. Each layer can carry one or more data sources, and the source type determines which renderer the APEx Geospatial Explorer uses.

The builder supports the following source types:

Type	Use for
COG	Cloud Optimized GeoTIFFs streamed from object storage. The preferred raster format.
WMS / WMTS / WFS	Layers served by an OGC web service.
XYZ	Pre-rendered raster tile pyramids (e.g. basemaps).
GeoJSON / FlatGeoBuf	Vector features for points, lines, and polygons.
CSV	Tabular point data with lat/lon columns.
S3 browser	Pick COGs, GeoJSON, or FlatGeoBuf files from an S3-compatible bucket.
STAC browser	Discover items and assets from a STAC catalog.

See each page for the configuration fields, supported MIME types, and any service-specific behaviour.