Abstract

The development of standards for geospatial web services has been spearheaded by the Open Geospatial Consortium (OGC) - a group of over 370 private, public and academic organisations (OGC, 1999-2009). The OGC aims to facilitate interoperability between geospatial technologies through education, standards and other initiatives. The OGC Service Architecture, described in the international standard ISO 19119, offers an abstract specification for web services covering data dissemination, processing, portrayal, workflows and other areas. The development of specifications covering each of these categories of web services has led to a significant number of geospatial data and computational services available on the World Wide Web (the Web). A project1 to establish a persistent geospatial interoperability test-bed (PTB) was commissioned in 2007 by the Association of Geographic Information Laboratories in Europe (AGILE), Commission 5 (Networks) of the European Spatial Data Research (EuroSDR) organisation and the OGC

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