Re: [galeon] wcs reference implementation initiative

• To: Ben Domenico <Ben@xxxxxxxxxxxxxxxx>
• Subject: Re: [galeon] wcs reference implementation initiative
• From: Peter Baumann <p.baumann@xxxxxxxxxxxxxxxxxxxx>
• Date: Wed, 17 Oct 2007 16:10:39 +0200

Hi Ben & all,

it is of high interest to the WCS.RWG to see your assessment.

TIA,
Peter


Ben Domenico wrote:

Hi all,

A group of GALEON Phase 1 participants who attended the Unidata OGC Interoperability Day in Boulder came up with a few observations regarding attempts to use the WCS specifications serve Earth science datasets traditionally made available via in CF-netCDF/OPeNDAP/THREDDS.

-- The WCS 1.1 protocol specification is much more complex and difficult to implement than WCS 1.0.

-- It appears that the WCS.RWG is now developing a new specification (WCS 1.2?) that will be much different from WCS 1.1. In particular it will have a base specification that is relatively simple and a set of extensions.

-- The OPeNDAP/THREDDS/CF-netCDF community would benefit from a more general (and perhaps more complex) abstract coverage data model and a simpler protocol specification than is available in WCS 1.1

-- One of the lessons learned from GALEON Phase 1 is that there are distinct advantages to having communities of practice develop practical reference implementations in parallel with RWG efforts to define specifications in committee.

Based on these observations and follow up discussion, an initiative is underway to start with current implementations of the WCS 1.0 protocol and add functionality to the specification (and to the implementations) as needed in order to serve a more diverse set of CF-netCDF/THREDDS/OPeNDAP datasets via standard protocols. In effect this is an effort to develop "reference implementations" of the protocol and extensions that will hopefully inform the committee work of the RWG.

An email list called wcsplus has been formed.  You can join the list at:

http://www.unidata.ucar.edu/support/mailinglist/mailing-list-form.html <http://www.unidata.ucar.edu/support/mailinglist/mailing-list-form.html>

-- Ben

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