2009-10-19Here you find two presentations which briefly show examples of how to use GENESI-DR webportal for data discovery and processing services. Full Story

2009-01-20Earth observation products have specific characteristics like the orbit number, processing center and acquisition station that follow a specific logic inherent to the Earth observation community. This entry describes an extension for OpenSearch that will provide a standard mechanism to query a resource based on those Earth observation elements.Full Story

2008-11-24INSPIRE requires us to submit metadata to a geoportal operated at the Member State level (or below). In practise this will be to a CSW2 service using the ISO Application Profile. In this entry we discuss some simple solutions to be INSPIRE compliant in this domain.Full Story

2008-10-29Often enough a dataset will be available from multiple access points. This may simply be a different access protocol, for example via an FTP repository and an HTTP server. Alternatively data may also be available via geodata-specific services, such as a WMS or WFS. Online resources may require supplementary information in order to automate access to them - version, for example, can be critical for a WMS service. The DCLite4G namespace provides a supplementary vocabulary for identifying types of web service from which a dataset can be accessed.Full Story

2008-09-04To define the structure of the GENESI-DR information model we use the DCLite4G vocabulary. DCLite4G is short for "Dublin Core Lightweight Profile for Geospatial" and it is a minimal information model for metadata about geospatial data. This vocabulary was designed to help extend Dublin Core with metadata about geodata. Our main use of DCLite4G is to provide classes that represent a DataSet and Series, with the relations between them. DCLite4G also covers properties specific to a geographic application - file formats for GIS data, different coordinate systems. Full Story

2008-08-06We are using RDF model to allow nodes in a digital repository network to share data with catalogs. Here we go into more detail about our design decisions and how the model fits with currently developing standards in Europe.Full Story

2008-07-30This entry explains the reasons why it was decided to use DCLite4G, foaf and ical instead of the equivalent Dublin Core elements. Full Story

2008-07-15To share information about data sets and series available on Digital Repository nodes, we settled on an RDF model rendered in XML. Participating organisations publish RDF/XML files describing updates to their data products. This entry is an informative example of RDF/XML which can be consumed by the duetopia catalog and allow the automatic insertion of the dataset described in the GENESI-DR Discovery Agent.Full Story

2008-06-14Following her articles dedicated to OpenSearch and how it could meet the INSPIRE requirements for the GENESI-DR discovery services, Jo Walsh published a new article on Terradue web site explaining the initial duetopia implementation. While the previous articles focused on abstract level, this new article shows the path to the initial prototype implementation of an OpenSearch interface to a geospatial metadata repository.Full Story

2008-04-20In a new blog entry by Dion Hinchcliffe from ZDNet that discuss the striking contrast between the slow going of SOA initiatives in the enterprise and the vibrant and rapidly growing ecosystems similar to them on the consumer Web 2.0. It presents the differences and advantages of SOA and what the author is describing as Web-Oriented Architecture (WOA) which is less a strict set of standards than a loose set of enabling practices and simple applications. Full Story