NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
NOTE: The galeon mailing list is no longer active. The list archives are made available for historical reasons.
I *think* I understand what Ben means when he says OGC O&M "are so general they don't provide the detail needed..." : In and of themselves, SWE/O&M don't cover as written don't cover many semantic (and occasionally syntactic) details -- it is left to the user community to provide those specifics, the way OOSTethys did. (Is that what you mean?) NetCDF with CF provides a lot of that additional detail.
At the same time, I have to say that the CF-netCDF encoding was also insufficient for two of the communities I've dealt with. For one example, to my understanding the OceanSITES profile had to lay out a number of additional 'required attributes' for netCDF/CF to be sufficient to describe those sites' data sets. In the second case, a number of users with their own data sets found the CF vocabulary insufficient, and no suitable way to support additional vocabularies in the netCDF/CF context. (I want to submit a CF change request on this last point. As soon as I can figure out the right thing to request.)
I don't think this cuts against any of the rest of Ben's email, but I wanted to be clear that the topics addressed so far are necessary, but not sufficient, to provide community interoperability for most non- trivial communities. A sufficiently integrated semantic concept is also necessary to close the circuit.
John On Oct 8, 2008, at 3:44 PM, Ben Domenico wrote:
Another way to look at this is that the information models of ISO 19123 and the OGC O&M are indeed general enough at the conceptual level to encompass our data collections. *** However, they are so general that they don't provide the detail needed to ensure that our data is useful by other communities. On the other hand, WCS with CF- netCDF encoding has been shown to provide sufficient detail to enable a handful of clients and servers to interoperate with one another on a limited subset of the data collections in the GALEON community. ***
-------------- John Graybeal <mailto:graybeal@xxxxxxxxx> -- 831-775-1956 Monterey Bay Aquarium Research Institute Marine Metadata Interoperability Project: http://marinemetadata.org
galeon archives: