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Subject: Target areaDefinition.doc
- From: "Ham, Gary A" <hamg@BATTELLE.ORG>
- To: emergency-msg@lists.oasis-open.org
- Date: Thu, 08 Feb 2007 12:07:28 -0500
To
all,
I apologize for
sending the file to the list instead of uploading. Do not have Kavi
access.
What I did was to
use our data dictionary structure to refine and describe the use of
geo-oasis:where within the RM standard. I also "re-used" Carl's examples. They
are excellent.
Based on your
feedback, I used all of the possible where choice values.
With my overall goal
of simplicity, I also added some rules. I am not hard over on
any of them, but I believe that they need to be specifically discussed.
Otherwise I am afraid that usage confusion due to over-flexibility will prevail.
Here are the specifics that I added:
1. The default
WGS-84 CRS will be used.
2. The
oasisAttributes can be used, but are not part of the standard.
Implementers are not required to understand the attributes, and users of the
attributes do so knowing that recipients may not understand
them.
3. The circle
diameter will be kilometers only, since unit of measure attributes cannot be
guaranteed to be understood.
4. For polygons we
can use exterior rings only. (Alternatively, we could change the
cardinality of where within Location to allow multiples. Otherwise
an interior ring without an exterior ring would just be weird for locating
a resource. ("It is located anywhere but here." ) I would easily go along
with the change to multiplicity and remove this rule.)
5. For multiple point sets we
standardize on posList. I would also concur with going the other way
and only using multiple pos tags, rather than posList, but I think that we
should use one and one only of the alternatives.
R/s
Gary A. Ham
Battelle Memorial
Institute
External Systems Interoperability
Coordinator
Open Platform for Emergency
Networks
Disaster Management e-Gov
Initiative
Office for Interoperability and
Compatibility
Science and Technology
Department of Homeland
Security
540-288-5611 (office)
703-869-6241
(cell)
"You would be surprised what
you can accomplish when you do not care who gets the credit." - Harry S.
Truman
Target areaDefinition.doc
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