Service specification for ELF GeoLocator

This specification describes the architecture, data contents and functionalities of the ELF GeoLocator service.


The ELF GeoLocator service is a georeferencing service that serves multilingual European geographical names data that has been collected from several European countries. In addition to the geographical names data, the ELF GeoLocator service also makes use of data that has been collected from the INSPIRE/ELF themes Addresses (AD) and Administrative Units (AU). The main use cases for the ELF GeoLocator service are:

  • Use case A: a place name, address and administrative unit search functionality that can support for instance a web map application. The web map user interface may contain a name search form where users can type place names, addresses or administrative unit names. The queries are transferred to the ELF GeoLocator service that returns the coordinate location for the queried name. When the web map application receives the answer, it pans the map to the received location.
  • Use case B: a web map application where user clicks a selected location on a map. The coordinates of the clicked location are transferred to the ELF GeoLocator service that returns the place name or address that is nearest to the clicked location. The administrative unit that contains the clicked point is returned if the administrative unit search mode is set on. The administrative unit hierarchy can be obtained by following the parent links that are included in the returned feature.
  • Use case C: the place name content of the ELF GeoLocator is visualized on top of other content. 

The ELF GeoLocator service provides functionalities for performing geocoding (use case A) and reverse geocoding (use case B).



Responsible party: 

FGI (NMCA Finland)

The Competitiveness & Innovation framework Programme (CIP) Information and Communication Technologies Policy Support Programme (ICT PSP) Open Data and open access to scientific information (Project reference 325140)

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