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Subject: Re: [emergency] One-Stop GISArticle and some thoughts
I am not sure if this email will post to the list, so if
it does not, could you please pass on? Thanks!
First, I would like to clear up one possible point of
misunderstanding regarding the OpenGIS Consortium - we do not define data and/or
content standards! We leave this to other organizations, such as the FGDC. The
OGC is a voluntary consensus standards organizations dedicated to defining and
approving interface and encoding specifications that enable interoperability of
spatial data, services, and applications. These specifications are independent
of content format and vendor neutral. I should also mention that many of the
major producers of geospatial information at the Federal level are also members
of the OGC - not just vendors.
For example, below is a simplified version of the
reference architecture for the GOS Portal that the OGC membership implemented as
a prototype.
In this architecture, a client that is OGC spec enabled
can access ANY repository that is also OGC interface enabled. The various W*S
interfaces support a variety of access mechanisms to the spatial repositories -
from asking for simple georeferenced "pictures" to requesting and receiving the
physical data in a neutral format payload (as GML - Geography Markup
Language).
The OGC membership is also interested in working
collaboratively through various interoperability initiatives to define higher
level objects models for given domains of spatial data. Again, these are not
content models. Instead, they are designed to allow schema mapping from
disparate content models for a given domain (such as transportation) into a
common model for use in an interoperable environment. We will be publishing a
white paper on this topic in the very near future.
Regards
Carl Reed
OGC