A Spatial Data Infrastructure (SDI) is a set of “technologies, policies, standards and human resources to obtain, process, store, distribute and improve the use of geographic information”. The SDI concept arises in response to the need to ensure the availability, quality, organization, accessibility and exchange of geographic information that is common to a large number of policies and subjects.

At the European level, the Inspire Directive (2007/2/CE) establishes a European SDI based on the geographic information infrastructures created by the Member States, making them compatibles thanks to a common execution rules and complemented by Community measures. The Spanish transposition of the Directive tries to integrate the geographic information infrastructures and interoperable services of the different Spanish public organism into a National Spatial Data Infrastructure called Infraestructura de Datos Espaciales de España (IDEE). http://www.idee.es/

With a wide experience in this field, at national and European level, GeoSLab offers to Public Administrations and companies advisory and consultancy services to set up a SDI and the group of technologies and products that facilitates its implementation:

• Geoportal that provides access to interoperable geographic information services.
• Description of geographic data and services through metadata, created either by using CatMDEdit tool or techniques of auto- generation of metadata of services. Data and services catalog to make searches of these data.
• Location-based services and applications: gazetteer service and search applications by name.

• Viewer services and applications: web map services (WMS OGC, WMS-C and WMS-SLD OGC), symbols creation, map cache to turn vector data into raster data, web applications to display raster and vector data (WMS, WFS, GML, KML, GeoRSS, GeoJSON) and API for the integration of these applications into other web sites.
• Download services and applications: feature services and coverage for accessing data (WFS OGC and WCS OGC) and web applications for downloading data by geographic area.
• Transformation services and applications: coordinate transformation service (WCTS OGC) of vector and raster data, and access to the service from other web applications.
• Access provision services and applications that link information provided by each service: processing services that offer data analysis with access to WFS and WCS services, and web applications for territorial analysis.
• SDI user and content manager.

Some of the most relevant works:

• Spanish Spatial Data Infrastructure node http://www.idee.es/
• Spatial Data Infrastructure of the City Council of Zaragoza http://idezar.zaragoza.es