Orchestrating OGC web services to produce thematic maps in a spatial information infrastructure

摘要

An intelligent geoportal orchestrates (automatically coordinate) web services to prepare,discover and present information to the user. Implementations of web service standards by theOpen Geospatial Consortium (OGC) and ISO/TC 211, Geographic information/Geomatics, suchas, the Web Map Service (WMS), Web Feature Service (WFS) and Styled Layer Descriptor(SLD) enable the display of spatial data in a geoportal. Ultimately, our goal is to intelligentlyorchestrate web services to produce thematic maps. As a first step towards our ultimate goal, inthis article, we present the results of experiments with the orchestration of OGC web services toproduce thematic maps. Our goal here was to evaluate whether orchestrating OGC webservices can produce thematic maps. The results prove that this is possible, but show that thereis customised functionality that has to be wrapped into WPSs. This poses a challenge to on thefly intelligent orchestration, which is required in an intelligent geoportal.