Hi Ben:
Sorry I missed the meting, as this is not only fascinating but has
important ramifications. There are communities now requiring services
that are OGC standards, but if this becomes an OGC standard it changes
the entire ball game. Steve Hankin suggested awhile back (i never
knew quite how serious he was) that OpeNDAP be submitted as an OGC
standard. This gets down to the question of how much OGC will require
everything to be GML and related questions to which I have no clue.
You know our (my group's) solution to a lot of this are gateways, but
this is very intriguing.
-Roy
On May 10, 2009, at 9:38 AM, Ben Domenico wrote:
Hi,
At the US IOOS (Intgrated Oceans Observing System) DMAC (Data
Management and Communications Subsystem) Steering Team meetings last
week, a topic with important GALEON implications came up. Please
note up front that this is all very tentative at the moment and very
much in the "investigation" stage. But, with the next OGC Technical
Committee meeting coming up in June, we should begin considering the
pros and cons and other implications.
David Arctur of the OGC suggested that we submit the CF-netCDF
directly as an OGC standard. As I understood his suggestion, the
general idea would be that CF and netCDF would be for binary data
what GML and XML is for text data. To me this was a very innovative
(if not radical) suggestion and questions arise whether this would
involve the file format, the API, ncML, ncML-GML, CSML and possibly
other facets related to CF-netCDF. In spite of the question marks,
I think this is really worth some careful thought. Since the
concept was so new to me, I asked David if there were any precedents
that might serve as a template for how we might proceed. In
response, he sent a list (appended below without any implied
endorsement) which includes specification examples for file formats
and for the APIs.
Fascinating idea.
.
-- Ben
=============================================
Geographic Objects (GO-1) - this is a fine-grained API pushed by a
federal agency, very little uptake, but it's an API that became an
OGC standard.
http://www.opengeospatial.org/standards/go
KML 2.2 - see what they did.
http://www.opengeospatial.org/standards/kml
Simple Feature Access, Part 1: Common Architecture - this is an
interface with different platform-specific encodings (COM, CORBA)
and SQL access (see next two references for the most used platforms)
http://www.opengeospatial.org/standards/sfa
Simple Feature Access, Part 2: SQL Option
http://www.opengeospatial.org/standards/sfs
Simple Features for OLE/COM
http://www.opengeospatial.org/standards/sfo
OGC Reference Model (ORM) -- this is the roadmap for OGC standards
evolution and maturation; in your proposal for CF/netCDF describe
how it fits in the roadmap.
http://www.opengeospatial.org/standards/orm (pdf & doc downloads
from this page)
Best Practices - index page (includes next two references below)
http://www.opengeospatial.org/standards/bp
Binary XML (BXML) Encoding Specification, OGC 03-002r9 (Craig Bruce,
CubeWerx)
http://portal.opengeospatial.org/files/?artifact_id=13636
Specification Best Practices, OGC 06-135r1 (Carl Reed) - This
document describes a variety of Best Practices and Specification
development guidance that the Members have discussed and approved
over the years. These Best Practices have not been captured in other
formal OGC documents other than meeting notes.
http://portal.opengeospatial.org/files/?artifact_id=17566
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Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
1352 Lighthouse Avenue
Pacific Grove, CA 93950-2097
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