Linked Data Service: linking geodata

Linked Data

Linked data refers to using the Web to connect related data that were not previously linked. The data are identified, shared and referenced by Uniform Resource Identifier (URI). The Resource Description Framework (RDF) and the underlying standards like SPARQL are used to encode and link the data.

Description

RDF is a W3C standard enabling to formulate statements about Web resources. Resources are described via statements composed of a subject a predicate and an object, thus RDF statements are called triples. The subject and the predicate in a triple are usually URIs, while the object can be either an URI or a literal value. RDF triples are stored in a Triples Store and exposed via a so called SPARQL Endpoint.

The main benefits of this approach are:

  • Data is given a context (the resources are semantically tagged)
  • Data is linked
  • Data is on the web (findable and reusable)

 

Query and browse the data

Data can be queried with SPARQL. SPARQL is the query language for RDF, the same way SQL is for relational databases.

The link to the SPARQL Endpoint of the Federal Spatial Data Infrastructure is below in “Further information”. Example queries are available in the documentation of the SPARQL Endpoint.

ld.geo.admin.ch is the Linked Data interface of the Federal Spatial Data Infrastructure that acts as a frontend to the SPARQL: data can be browsed in HTML format with a standard web browser.

 

Example queries

 

 

Available datasets

The following datasets of the Federal Spatial Data Infrastructure are currently available as Linked Data:

  Title

  Description

  swissBOUNDARIES 3D

 

 

 

 

Public transport stops

  The administrative units and national boundaries of Switzerland and the Principality of Liechtenstein. Details

 

 

Public transport stops in Switzerland, as well as other locations of operational or structural importance in public transportation (Operating points). Details

 


geo.admin.ch c/o
Bundesamt für Landestopografie
KOGIS (Koordination, Geoinformation und Services )
Seftigenstrasse 264
CH - 3084 Wabern
Tel.
0041 58 469 03 15
Fax
0041 58 469 04 59

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geo.admin.ch

c/o
Bundesamt für Landestopografie
KOGIS (Koordination, Geoinformation und Services )
Seftigenstrasse 264
CH - 3084 Wabern

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