Implementing Inspire Services at National Node of Spanish NSDI
ISBN 978-85-88783-11-9
Authors
1López, E.; 2Rodriguez, A.F.; 3Abad, P.; 4González, J.; 5Villena, A.; 6Serra, I.
1NATIONAL CENTRE FOR GEOGRAPHIC INFORMATION Email: elromero@fomento.es
2NATIONAL CENTRE FOR GEOGRAPHIC INFORMATION Email: afrodriguez@fomento.es
3NATIONAL CENTRE FOR GEOGRAPHIC INFORMATION Email: pabad@fomento.es
4NATIONAL CENTRE FOR GEOGRAPHIC INFORMATION Email: jgonzalezg@fomento.es
5NATIONAL CENTRE FOR GEOGRAPHIC INFORMATION Email: antonio.villena@cnig.es
6NATIONAL CENTRE FOR GEOGRAPHIC INFORMATION Email: inmaculada.serra@cnig.es
Abstract
The National Centre for Geographic Information (CNIG) is an autonomous commercial body depending of the Ministery of public Works trought the National Geographic Institute (IGN) of Spain. One of its responsibility is to develop and maintain the national node of Spanish NSDI, named IDEE for Infraestructura de Datos Espaciales de España, including the National Geoportal (www.idee.es), the national Inspire catalogue service and a set of standard services fulfilling Inspire requirements: 12 Web Map Services, 5 Web Feature Services, and one Atom based download services. In this paper, the experience arising of those implementations, the lessons learnt and the good practices identified are presented, devoting special attention to the problems and difficulties found, the hypothesis assumed and the decisions taken. One of the service required by the implementation rules regarding INSPIRE Network Services is the download service. To facilitate the implementation of this type of service in the State Members, the Initial Operational Task Force developed a technical guidance. This document contains detailed technical documentation highlighting the mandatory and recommended elements, and defines two types of download services: pre-defined dataset download service for the simple download of pre-defined datasets (or pre-defined parts of a dataset) with no ability to query datasets or select user-defined subsets of datasets and direct access download service extends the functionality of a pre-defined dataset download service to include the ability to query and download subsets of datasets. Two technologies can be used to develop the download services: ATOM + OpenSearch for pre-defined dataset download services and ISO 19142 Web Feature Service + and ISO 19143 Filter Encoding for pre-define dataset and direct access download services. The National Centre of Geographic Information (CNIG) have faced many problems when started to develop direct access and predefined dataset download services. There have been found two main problems: the data models are not INSPIRE compliant, unfortunately, not by a long shot, so there have been a hard work analyzing, matching and, in some cases, rebuilding our data. The second problem is that there is not an easy and cost-efficient way to implement a INSPIRE compliant download service. In this presentation, it will be showed the problems and the solutions the CNIG team has applied. The software of the Web Download Centre of the CNIG has been adapted to fulfil the ATOM requirements and Deegree solutions has been used for the WFS 2.0 according to INSPIRE. Some practical examples will be showed as well.
Keywords
SDI; INSPIRE; WEB SERVICES