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WFS - Web Feature Service

Despre serviciu​

Web Feature Service (WFS) permite accesarea și descărcarea datelor geospațiale vectoriale. Spre deosebire de WMS care returnează imagini, WFS returnează datele brute în format GeoJSON, GML sau alte formate.

📖 Specificație oficială OGC: Web Feature Service (WFS)

Versiuni suportate: 2.0.0, 1.1.0, 1.0.0

Endpoint​

Endpoint general (toate datele):

https://services.geo-spatial.org/geoserver/wfs

Endpoint per workspace (date dintr-un anumit domeniu):

https://services.geo-spatial.org/geoserver/{workspace}/wfs

Workspace-uri disponibile​

WorkspaceDomeniu
administrative-boundariesLimite administrative
recensamantDate de la recensământ
geomorphometryDate geomorfologice
ehartaHărți istorice

Capabilități​

Toate datele:

https://services.geo-spatial.org/geoserver/wfs?service=WFS&request=GetCapabilities

Doar un workspace (ex: limite administrative):

https://services.geo-spatial.org/geoserver/administrative-boundaries/wfs?service=WFS&request=GetCapabilities

Operațiuni suportate​

OperațiuneDescriere
GetCapabilitiesMetadate serviciu și lista feature types
DescribeFeatureTypeSchema (atributele) unui feature type
GetFeatureDescarcă entitățile geografice

Formate de ieșire​

  • application/json (GeoJSON) - recomandat
  • application/gml+xml (GML)
  • SHAPE-ZIP (Shapefile arhivat)
  • csv (CSV cu geometrie WKT)

Exemple de utilizare​

Descărcare GeoJSON​

https://services.geo-spatial.org/geoserver/wfs?
  service=WFS&
  version=2.0.0&
  request=GetFeature&
  typeName=administrative-boundaries:ro_admin_county_polygon&
  outputFormat=application/json

Cu filtru spațial (BBOX)​

https://services.geo-spatial.org/geoserver/wfs?
  service=WFS&
  version=2.0.0&
  request=GetFeature&
  typeName=administrative-boundaries:ro_admin_county_polygon&
  bbox=25,44,27,46,EPSG:4326&
  outputFormat=application/json

Cu filtru CQL​

https://services.geo-spatial.org/geoserver/wfs?
  service=WFS&
  version=2.0.0&
  request=GetFeature&
  typeName=administrative-boundaries:ro_admin_county_polygon&
  CQL_FILTER=name='Suceava'&
  outputFormat=application/json

În QGIS​

  1. Layer → Add Layer → Add WFS Layer
  2. URL: https://services.geo-spatial.org/geoserver/wfs
  3. Selectează feature type-ul dorit

În JavaScript (fetch)​

const response = await fetch(
    'https://services.geo-spatial.org/geoserver/wfs?' +
    'service=WFS&version=2.0.0&request=GetFeature&' +
    'typeName=administrative-boundaries:ro_admin_county_polygon&' +
    'outputFormat=application/json'
);
const geojson = await response.json();

Vezi și​