The Open Geospatial Consortium (OGC) defines a number of
standards (both for data models and for online services) that have
been widely adopted in the Geographical Information System
(GIS) community. In this paper we will describe our group’s
efforts to implement GIS services according to OGC standard
specifications in accordance with the Web Services approach.
This paper focuses on the Web Map Service (WMS), which we
are coupling to problems in computational geophysics. Through
the use of Web Services, we are able to integrate GIS services
with other families of services, including information, data
management, and remote application execution and management.
We also describe WMS client building efforts that are suitable for
integration with computational Web portals.
To be able to interact with non-Web Service versions of WMS,
we also have built bridging service for our extended WMS. Since
Web Service oriented WMS has a different request/response
paradigm from non-Web Service versions, we have extended
cascading WMS by adding request handler functionality. This
kind of WMS behaves like both a cascading WMS and a proxy to
handle different types of requests to overcome interoperability
problems between different WMS systems.
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