WFS API

From the dataset abstract

The Helsinki component master plans index is a combined map of the component master plans valid in the city.

The purpose of the master plan is to provide general guidance on the community structure and land use of a municipality or part of it and to coordinate operations. The plans index shows the external boundaries of the current master plans and some attributes.

The Helsinki component master plans index has been created in cooperation between urban planning and the City Survey Services for the needs of the Helsinki Map Service.

The scale of the dataset is 1:500.

The data is available for download in several formats, including JSON, KML, CSV, Esri Shape, and XML. Available formats can always be found under OutputFormat in the GetCapabilities query for the service. More information and instructions on using the WFS API can be found in the guide (in Finnish).

Previewing the data in the kartta.hel.fi service:

• kartta.hel.fi

Coordinate systems:

• Maintained in ETRS-GK25 (EPSG:3879), can be projected to other coordinate systems. See GetCapabilities query for other possible coordinate systems.

API addresses:

• WMS API: https://kartta.hel.fi/ws/geoserver/avoindata/wms
• WFS API: https://kartta.hel.fi/ws/geoserver/avoindata/wfs

Layers:

• Osayleiskaavahakemisto_alue

Component master plans index: attributes, data types and their key and reliability data in information services:

• id (int). Unique identifier of the feature. Reliable, comprehensively existing information.
• kohdenimi (string). Feature name. Reliable, comprehensively existing information.
• tunnus (string). Identification of the component master plan. Reliable, comprehensively existing information.
• nimi (string). Name of the component master plan. Reliable, comprehensively existing information.
• olotila (int). State of the component master plan. Reliable, comprehensively existing information.
• luontipvm (date). Feature creation date (yyyy-mm-dd). Reliable, comprehensively existing information.
• muokkauspvm (date). Feature editing date (yyyy-mm-dd). Reliable, comprehensively existing information.
• datanomistaja (string). Data owner. Reliable, comprehensively existing information.
• paivitetty_tietopalveluun (date). Information service record date (yyyy-mm-dd). Reliable, comprehensively existing information.
• geom (GeometryPropertyType). Geometry of the feature.

Source: Helsingin osayleiskaavahakemisto