Concept information
Preferred term
OGC/WCS
Definition
- The Open Geospatial Consortium/Web Coverage Service is a specification developed by the Open Geospatial Consortium that describes the Web Coverage Service (WCS) that supports the networked interchange of geospatial data as "coverages" containing values or properties of geographic locations. Unlike the Web Map Service (WMS) (OGC document #01-021r2), which filters and portrays spatial data to return static maps (server-rendered as pictures), the Web Coverage Service provides access to intact (unrendered) geospatial information, as needed for client-side rendering, multi-valued coverages, and input into scientific models and other clients beyond simple viewers. The Web Coverage Service consists of three operations: GetCapabilities, GetCoverage, and DescribeCoverageType. The GetCapabilities operation returns an XML document describing the service and the data collections from which clients may request coverages. Clients would generally run the GetCapabilities operation and cache its result for use throughout a session, or reuse it for multiple sessions. The GetCoverage operation of a Web Coverage Service is normally run after GetCapabilities has determined what queries are allowed and what data are available. The Get- Coverage operation returns values or properties of geographic locations, bundled in a well-known coverage format. Its syntax and semantics are similar to the WMS GetMap request, but several extensions support the retrieval of coverages rather than static maps. Visit the Open GIS Consortium homepage at http://www.opengeospatial.org/ (en)
Broader concept
- M - O (en)
URI
https://gcmd.earthdata.nasa.gov/kms/concept/c9c09e63-c018-4870-b0cd-fcc37a2539a8
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