OGC API DGGS
The OGC API – Discrete Global Grid Systems is an open standard from the Open Geospatial Consortium (OGC) for accessing, querying, and sharing data referenced to a DGGS.
- Standard: https://ogcapi.ogc.org/dggs/
- GitHub: https://github.com/opengeospatial/ogcapi-discrete-global-grid-systems
What It Defines
The standard defines a family of REST API building blocks:
| Building block | Description |
|---|---|
| DGGS | Describe available grid reference systems |
| Zones | Access individual cells (zones) and their data |
| Zone Query | Spatial and attribute queries over cells |
| Data Retrieval | Retrieve data values for a cell or zone list |
Requests identify cells by their native DGGS address (e.g. Z7 string for IGEO7) — no coordinate conversion needed by the client.
IGEO7 as a DGGS Reference System
Within the OGC API DGGS framework, IGEO7 is identified as:
DGGS Reference System: ISEA7H_Z7
Zone address format: Z7_STRING
A request for data at a specific IGEO7 cell looks like:
GET /dggs/IGEO7/zones/0900264253
pydggsapi: IGEO7-Native Implementation
pydggsapi implements OGC API DGGS with IGEO7 as a first-class supported grid system. It is the reference implementation for IGEO7 OGC API DGGS access.