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

wcs-spec-hierarchy.png

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:

further:

Technical resources

Topic attachments
I Attachment Action Size Date Who Comment
09-045r1_WPS_Application-Profile_-_Coverages_2014-11-04.zipzip 09-045r1_WPS_Application-Profile_-_Coverages_2014-11-04.zip manage 62.3 K 02 Jan 2015 - 14:24 PeterBaumann 09-045r1 WPS Application Profile - Coverages
09-146r3_Coverage-Implementation-Schema_2016-04-14.zipzip 09-146r3_Coverage-Implementation-Schema_2016-04-14.zip manage 731.1 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 13-057_WCS_Extension_-_Transaction_2014-09-15.zip manage 146.4 K 09 Dec 2015 - 14:50 PeterBaumann 13-057 WCS Extension - Transaction
14-121_WCS_Extension_-_XPath_2014-12-01.docxdocx 14-121_WCS_Extension_-_XPath_2014-12-01.docx manage 96.5 K 17 Dec 2015 - 15:33 PeterBaumann 14-121 WCS Extension - XPath (draft)
14-121_Web-Information-Service_2016-05-18.zipzip 14-121_Web-Information-Service_2016-05-18.zip manage 94.7 K 03 Jun 2016 - 21:14 PeterBaumann OGC Web Information Service (WIS) 1.0
15-065r1_Testbed_11_Referenceable_Grid_Harmonization_Engineering_Report_FINAL.pdfpdf 15-065r1_Testbed_11_Referenceable_Grid_Harmonization_Engineering_Report_FINAL.pdf manage 1120.6 K 03 Oct 2017 - 14:29 PeterBaumann Testbed-11 Engineering Report motivating CIS 1.1
16-083_ReferenceableGridCoverage_Extension.zipzip 16-083_ReferenceableGridCoverage_Extension.zip manage 101.3 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 17-089_WCS-core_2017-11-25.zip manage 99.0 K 03 Dec 2017 - 18:11 PeterBaumann WCS 2.1 draft (prepared for upcoming OGC TC vote)
cis_1-1.zipzip cis_1-1.zip manage 867.9 K 04 Apr 2017 - 10:18 PeterBaumann Coverage Implementation Schema 1.1 (adopted standard)
wcs-spec-hierarchy.pngpng wcs-spec-hierarchy.png manage 52.7 K 23 Mar 2019 - 11:04 PeterBaumann OGC coverage data and service standards overview diagram
wcs_2016-01-16.eapeap wcs_2016-01-16.eap manage 3572.0 K 17 Jan 2017 - 15:18 PeterBaumann coverage data and service UML model (non-authoritative, not necessarily up-to date)
Topic revision: r41 - 23 Mar 2019, PeterBaumann
 

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