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:
    • GML 3.2.1 Application Schema - Coverages ("GMLCOV"), version 1.0.1, OGC 09-146r2: adopted
    • Coverage Implementation Schema 1.1 (candidate standard, incorporating RFC comments]]-- backwards compatible next version of GMLCOV; key features:
      • renamed GMLCOV to CIS 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)
      • CIS 1.1 is backwards compatible to GMLCOV 1.0, and does not require any change to WCS 2.0
      • 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:

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)
cis_1-1.zipzip cis_1-1.zip manage 672.2 K 23 Nov 2015 - 15:15 PeterBaumann Coverage Implementation Schema 1.1 (draft candidate standard)
wcs-spec-hierarchy.pngpng wcs-spec-hierarchy.png manage 82.4 K 13 Mar 2014 - 11:40 PeterBaumann OGC coverage data and service standards overview diagram
wcs_2016-01-16.eapeap wcs_2016-01-16.eap manage 3570.0 K 04 Feb 2016 - 14:33 PeterBaumann coverage data and service UML model (non-authoritative, not necessarily up-to date)
Topic revision: r23 - 14 Apr 2016, PeterBaumann
 

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