Coverages and Web Coverage Service: the Big Picture

This page gives an overview of the coverage data model and the WCS service suite. -- PeterBaumann - 07 May 2013

OGC coverage data and service standards overview diagram


Figure: Coverage data and service model overview


Figure: WCS-internal data organization

Coverage specifications (with adoption status)

Coverage data model:

  • Core:
    • Coverage Implementation Schema (CIS), version 1.0.1 document and schema, OGC 09-146r2: adopted
      • renamed GML 3.2.1 Application Schema - Coverages (GMLCOV) to Coverage Implementation Schema (CIS) resulting from a renaming of OGC to better reflect contents of the standard (too many people believed GMLCOV is just a GML encoding, while it actually defines interoperable coverage structures in a format-independent way)
    • Coverage Implementation Schema (CIS), version 1.1 document and schemas for XML, JSON, RDF and examples: (adopted, backwards compatible next version of CIS/GMLCOV 1.0); key features (see rationales):
      • CIS 1.1 is backwards compatible to CIS/GMLCOV 1.0, and does not require any change to WCS 2.0 (just a formal extension to allow WCS instances serve the new coverage types - accomplished by WCS 2.1)
      • instead of the cumbersome grid distinction of Rectified / Referenceable Grid, various axis types are defined: non-referenced, regular, irregular, etc; these axis types can be combined arbitrarily in a coverage (eg, regular, rectified Lat and Long axes together with an irregular time axis)
      • support for grids as per SensorML 2.0
      • coverages can be partitioned into sub-coverages while still acting as one (eg, in a WCS GetCoverage request)
      • prepared for JSON support (next version)
  • format encoding extensions:
  • data model extensions:

WCS service model:


Technical resources

Topic attachments
ISorted ascending Attachment Action Size Date Who Comment
14-121_WCS_Extension_-_XPath_2014-12-01.docxdocx 14-121_WCS_Extension_-_XPath_2014-12-01.docx manage 96 K 17 Dec 2015 - 15:33 PeterBaumann 14-121 WCS Extension - XPath (draft)
wcs_2016-01-16.eapeap wcs_2016-01-16.eap manage 3 MB 17 Jan 2017 - 15:18 PeterBaumann coverage data and service UML model (non-authoritative, not necessarily up-to date)
15-065r1_Testbed_11_Referenceable_Grid_Harmonization_Engineering_Report_FINAL.pdfpdf 15-065r1_Testbed_11_Referenceable_Grid_Harmonization_Engineering_Report_FINAL.pdf manage 1 MB 03 Oct 2017 - 14:29 PeterBaumann Testbed-11 Engineering Report motivating CIS 1.1
WCS-internal-organization.pngpng WCS-internal-organization.png manage 30 K 19 Jun 2019 - 11:18 PeterBaumann WCS-internal data organization
wcs-spec-hierarchy.pngpng wcs-spec-hierarchy.png manage 52 K 23 Mar 2019 - 11:04 PeterBaumann OGC coverage data and service standards overview diagram
09-045r1_WPS_Application-Profile_-_Coverages_2014-11-04.zipzip manage 62 K 02 Jan 2015 - 14:24 PeterBaumann 09-045r1 WPS Application Profile - Coverages
09-146r3_Coverage-Implementation-Schema_2016-04-14.zipzip manage 731 K 14 Apr 2016 - 16:04 PeterBaumann Coverage Implementation Schema 1.1 (draft, incorporating RFC comments)
13-057_WCS_Extension_-_Transaction_2014-09-15.zipzip manage 146 K 09 Dec 2015 - 14:50 PeterBaumann 13-057 WCS Extension - Transaction
14-121_Web-Information-Service_2016-05-18.zipzip manage 94 K 03 Jun 2016 - 21:14 PeterBaumann OGC Web Information Service (WIS) 1.0
16-083_ReferenceableGridCoverage_Extension.zipzip manage 101 K 24 Jun 2016 - 20:58 EricHirschorn GMLCOV 1.0 ReferenceableGridCoverage Extension, updated on June 24, 2016
17-089_WCS-core_2017-11-25.zipzip manage 99 K 03 Dec 2017 - 18:11 PeterBaumann WCS 2.1 draft (prepared for upcoming OGC TC vote)
cis_1-1.zipzip manage 867 K 04 Apr 2017 - 10:18 PeterBaumann Coverage Implementation Schema 1.1 (adopted standard)
Topic revision: r42 - 19 Jun 2019, PeterBaumann
This site is powered by FoswikiThe information you supply is used for OGC purposes only. We will never pass your contact details to any third party without your prior consent.
If you enter content here you are agreeing to the OGC privacy policy.

Copyright &© by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding OGC Public Wiki? Send feedback