RE: Sub-properties for locn:geometry?

Wonderful John.

I think that in the "big picture" if you are going to include Easting and Northing, that you will have to include UTC.

Background
If you are in the Northern Hemisphere, then "Easting and Northing" coordinates have conjugate "Westing and Southing" coordinates with respect to Solar Noon at 2pi*R,4pi*R ... (http://en.wikipedia.org/wiki/Dirichlet_kernel).

This wrecks havoc for Work Life Balance:  The daily fraction of sunshine must not exceed (1/3) of a Half Day or (2/3) of a Whole Day, on any given day or Noon to Noon is not defined.  If you shift the year, then you find that the "School Work" is a net consumer of Energy above and below the Equator, but "School Work" at the Equator is not. Accumulating imaginary quantities is tricky and you have to watch the binomials.

People want to get paid for "Work" so it is important that this balance not be abused by switching the fractions.

--Gannon
-----------------------------------------
On Tue, 1/21/14, John Goodwin <John.Goodwin@ordnancesurvey.co.uk> wrote:

 Subject: RE: Sub-properties for locn:geometry?
 To: "Raphaël Troncy" <raphael.troncy@eurecom.fr>, "Andrea Perego" <andrea.perego@jrc.ec.europa.eu>, "Frans Knibbe | Geodan" <frans.knibbe@geodan.nl>
 Cc: "Sven Schade" <sven.schade@jrc.ec.europa.eu>, "LocAdd W3C CG Public Mailing list" <public-locadd@w3.org>
 Date: Tuesday, January 21, 2014, 1:33 PM
 
 Hi all,
 
 First - thank for the link
 Raphael - that did make me smile. The problems mixing work
 and social circles together ;)
 
 Anyway, here is my concrete example starter:
 
 If you look at the OS linked
 data for 'Southampton':
 
 http://data.ordnancesurvey.co.uk/id/7000000000037256
 
 you will noticed that it is
 related to a 'Geometry' via the predicate
 'extent' and it also has predicates geo:lat,
 geo:long and 'easting'/'northing'. geo:lat,
 geo:long and 'easting'/'northing' provide
 information about a 'representative point' for
 Southampton (centroid is a bit overloaded I think). This
 'representative point' is just a point guaranteed to
 lie within Southampton. I think it is useful (in this case)
 to provide both the 'representative point' and the
 polygon for area Southampton covers. So something like:
 
 os:7000000000037256
   a locn:Location;
  
 locn:representativePoint os:1234;
  
 locn:extent os:2458;
   os:1234 a
 sf:Point;
   os:2468 a sf:Polygon;
   ...  
 
 or
 if you prefer:
 
 os:7000000000037256
   a
 locn:Location;
   locn:representativePoint
 os:1234;
   locn:extent os:2458;
   os:1234 a neogeo:Point;
  
 os:2468 a neogeo:Polygon;
   ...
 
 Maybe then (in Manchester OWL
 syntax(ish)):
 
 
 locn:representativePoint rdfs:range (neogeo:Point OR
 sf:Point or geo:Point)
  locn:extent
 rdfs:range (neogeo:Polygon or sf:Polygon)
 
 
 (not saying
 representativePoint or extent are best choices for predicate
 names at this stage).
 
 John
 
 
 Dr John Goodwin 
 Principal
 Scientist
 Research, Ordnance Survey 
 Adanac Drive, SOUTHAMPTON, United Kingdom, SO16
 0AS 
 Phone: +44 (0) 23 8005 5761 
 www.ordnancesurvey.co.uk | john.goodwin@ordnancesurvey.co.uk
 
 Please consider your environmental
 responsibility before printing this email.
 
 
 -----Original
 Message-----
 From: Raphaël Troncy
 [mailto:raphael.troncy@eurecom.fr]
 
 Sent: 21 January 2014 15:40
 To: Andrea Perego; Frans Knibbe | Geodan
 Cc: Sven Schade; LocAdd W3C CG Public Mailing
 list
 Subject: Re: Sub-properties for
 locn:geometry?
 
 Hello
 all,
 
 > In order to
 verify the current position of the group, could you
 please
 > five your vote to the following
 proposal:
 >
 > 1.
 Definition of sub-properties of locn:geometry to denote
 MBRs,
 > centroids, etc.
 >
 > 2. They can be used
 to specify the MBR, centroid, etc. of a dcterms:Location
 >
 > 3. They can be used
 to specify the MDR, centroid, etc. of a geometry
 
 Before we come to a vote
 (I'm not sure I understand fully those 
 proposals by the way), can we have a *concrete*
 example (preferably in 
 turtle) of how we
 express those things for each of the 3 variants?
 As an example, let's pick Southampton or a
 smaller district (*) of the city.
 
    Raphaël
 
 (*) For example, the district around 
 https://www.foursquare.com/v/4bc1cd504cdfc9b60b0e9521
 :-)
 
    Raphaël
 
 -- 
 Raphaël Troncy
 EURECOM, Campus SophiaTech
 Multimedia Communications Department
 450 route des Chappes, 06410 Biot, France.
 e-mail: raphael.troncy@eurecom.fr
 & raphael.troncy@gmail.com
 Tel: +33 (0)4 - 9300 8242
 Fax:
 +33 (0)4 - 9000 8200
 Web: http://www.eurecom.fr/~troncy/
 
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Received on Wednesday, 22 January 2014 23:40:25 UTC