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RE: Sub-properties for locn:geometry?

From: Gannon Dick <gannon_dick@yahoo.com>
Date: Wed, 22 Jan 2014 15:39:57 -0800 (PST)
Message-ID: <1390433997.71837.YahooMailBasic@web122902.mail.ne1.yahoo.com>
To: RaphaŽl Troncy <raphael.troncy@eurecom.fr>, Andrea Perego <andrea.perego@jrc.ec.europa.eu>, Frans Knibbe | Geodan <frans.knibbe@geodan.nl>, John Goodwin <John.Goodwin@ordnancesurvey.co.uk>
Cc: Sven Schade <sven.schade@jrc.ec.europa.eu>, LocAdd W3C CG Public Mailing list <public-locadd@w3.org>
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.

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.

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

 Subject: RE: Sub-properties for locn:geometry?
 To: "RaphaŽl 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':
 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:
 † a locn:Location;
 locn:representativePoint os:1234;
 locn:extent os:2458;
 † os:1234 a
 † os:2468 a sf:Polygon;
 † ...† 
 if you prefer:
 † a
 † locn:representativePoint
 † locn:extent os:2458;
 † os:1234 a neogeo:Point;
 os:2468 a neogeo:Polygon;
 † ...
 Maybe then (in Manchester OWL
 locn:representativePoint rdfs:range (neogeo:Point OR
 sf:Point or geo:Point)
 rdfs:range (neogeo:Polygon or sf:Polygon)
 (not saying
 representativePoint or extent are best choices for predicate
 names at this stage).
 Dr John Goodwin 
 Research,†Ordnance Survey 
 Adanac Drive, SOUTHAMPTON, United Kingdom, SO16
 Phone: +44 (0) 23 8005 5761 
 Please consider your environmental
 responsibility before printing this email.
 From: RaphaŽl Troncy
 Sent: 21 January 2014 15:40
 To: Andrea Perego; Frans Knibbe | Geodan
 Cc: Sven Schade; LocAdd W3C CG Public Mailing
 Subject: Re: Sub-properties for
 > In order to
 verify the current position of the group, could you
 > five your vote to the following
 > 1.
 Definition of sub-properties of locn:geometry to denote
 > 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.
 (*) For example, the district around 
 RaphaŽl 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
 +33 (0)4 - 9000 8200
 Web: http://www.eurecom.fr/~troncy/
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 Thank you for your
 Adanac Drive
 Southampton SO16 0AS
 Tel: 08456
Received on Wednesday, 22 January 2014 23:40:25 UTC

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