Open standards, interoperability and portability
Each row states a category, the interface or format it covers, and what is deliberately not claimed for it. The status column says whether that row is in the software today.
Standards and formats
| Category | What it does | What it does not claim | Status |
|---|---|---|---|
| Open-standard consumption | Consumption of OGC WMS (Maa- ja Ruumiamet base map and thematic layers; Copernicus EFFIS) and OGC WFS (Maa- ja Ruumiamet administrative units, and residential buildings as a P1 capability) — the Estonian national geoportal's own standard interfaces. | OGC API-Features, OGC SensorThings, OGC CSW. | Available now |
| Open-standard output | GeoJSON (RFC 7946, WGS84) and CSV (RFC 4180, UTF-8) export of every Saku layer, each file carrying a provenance block. | Shapefile, GeoPackage, CityGML. | Available now |
| NGSI-LD orientation | A read-only NGSI-LD-formatted JSON-LD export of Saku entities (AdministrativeArea, WeatherObserved, Building, and Alert-shaped warnings) using the pinned ETSI core @context and the corresponding Smart Data Model names where they fit, labelled an NGSI-LD-formatted read-only export (not a context broker). | A FIWARE Orion-LD context broker, subscriptions, or NGSI-LD API compliance. | Available now |
| Coordinate systems | Storage in WGS84 (EPSG:4326) and consumption of Estonian L-EST97 (EPSG:3301) services, with the transformation stated on screen. | — | Available now |
| Portability — stack | Runs on a 100% open-source stack: Laravel, Vue, PostgreSQL/PostGIS, nginx and Docker. No proprietary map service and no proprietary database. | “Runs anywhere with one command” — a Compose file is not part of this delivery. | Available now |
| Portability — data | No proprietary map tiles for Saku: the Maa- ja Ruumiamet public WMS is the base map, while OpenStreetMap tiles remain in the Bağcılar demonstrator. Every dataset is re-importable from its public URL by a console command. | — | Available now |
| Licences | Every layer shows its licence: Maa- ja Ruumiamet open-data licence / CC BY 4.0-equivalent with attribution; Keskkonnaagentuur attribution; EFFIS terms. | — | Available now |
| Estonian standards | Use of the official ADS/EHAK settlement codes from the national register, with Estonian interface terminology aligned to the KORKS vocabulary (kriisikomisjon, olukorrapilt). | An X-tee/X-Road connection, or EE-ALARM. | Available now |
What portability means here
Every component of the running system is open source, and the database is PostgreSQL with PostGIS rather than a proprietary spatial engine. Nothing in the stack requires a licence key, a hosted map account or a vendor agreement to run.
The public data the Saku workspace is built on stays re-importable from the public URLs it came from, so the working set can be rebuilt from the original sources rather than recovered from us.