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CRS specification (was: Re: ISA Core Location Vocabulary)

From: Andrea Perego <andrea.perego@jrc.ec.europa.eu>
Date: Sun, 22 Dec 2013 23:07:40 +0100
Message-id: <CAHzfgWBmTuPGR66heccCrjY1iows5Fa7z_X97+2gpZcd4k+rTQ@mail.gmail.com>
To: Gannon Dick <gannon_dick@yahoo.com>
Cc: Oscar Corcho <ocorcho@fi.upm.es>, Ghislain Atemezing <auguste.atemezing@eurecom.fr>, Frans Knibbe | Geodan <frans.knibbe@geodan.nl>, Raphaël Troncy <raphael.troncy@eurecom.fr>, LocAdd W3C CG Public Mailing list <public-locadd@w3.org>
I think we'd better move this discussion in a separate thread, due to its
specific topic.

@Raphaël, could you please provide some more details about the CRS
conversion service you are about to publish?

Andrea


On Sun, Dec 22, 2013 at 9:22 PM, Gannon Dick <gannon_dick@yahoo.com> wrote:

> "Our early motivation is that France is using different
>  coordinate systems for geolocalizing geographical objects, ..."
>
> FWIW ... The Wikipedia page for Redonda in the Caribbean has a nice
> picture which illustrates the coding problem [1]. The "real owners"
> (Antigua&Barbuda) are not in the picture half way down the page.   When an
> island is uninhabited, it can be encoded as a "Component" but not a
> "Cohort" [2, 3] ... unless you take pains to differentiate between a Web of
> People and a Web of Things.
>
> --Gannon
>
> [1] http://en.wikipedia.org/wiki/Redonda
> [2] http://cohortanalysis.com/
> [3] http://www.rustprivacy.org/2013/education/fednet.html
> [4] http://www.rustprivacy.org/2013/education/popcalc.html
>
> --------------------------------------------
> On Sun, 12/22/13, Raphaël Troncy <raphael.troncy@eurecom.fr> wrote:
>
>  Subject: Re: ISA Core Location Vocabulary
>  To: "Oscar Corcho" <ocorcho@fi.upm.es>, "Ghislain Atemezing" <
> auguste.atemezing@eurecom.fr>, "Frans Knibbe | Geodan" <
> frans.knibbe@geodan.nl>
>  Cc: public-locadd@w3.org
>  Date: Sunday, December 22, 2013, 9:50 AM
>
>  Dear Oscar,
>
>  > When do you plan to have this KB of coordinate systems
>  already publicly
>  > available? We would love to be able to reuse it.
>
>  This is clearly on our todo list! With the Linking
>  Geospatial Data workshop coming up, we will definitively
>  push the publication of such a resource early next year.
>
>  Our early motivation is that France is using different
>  coordinate systems for geolocalizing geographical objects,
>  such as: Lambert93 in the Metropolitan area, RGFG95 in
>  Guyanne (French Antilles), RGR92 in Réunion (near
>  Madagascar), RGM04 in Mayotte, RGSPM06 in
>  St-Pierre-et-Miquelon, etc. The problem is that often, the
>  CRS is implicit and you have of course to interpret
>  differently the lat/long values given in a spreadsheet.
>
>  Besides a vocabulary and a knowledge base, we are also about
>  to publish a REST service that can convert data represented
>  in on CRS to WGS84.
>
>  Can you describe what is your use case with LocaliData ?
>  Cheers.
>
>    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/
>
>
>
>


-- 
Andrea Perego, Ph.D.
European Commission DG JRC
Institute for Environment & Sustainability
Unit H06 - Digital Earth & Reference Data
Via E. Fermi, 2749 - TP 262
21027 Ispra VA, Italy

DE+RD Unit: http://ies.jrc.ec.europa.eu/DE

----
The views expressed are purely those of the writer and may
not in any circumstances be regarded as stating an official
position of the European Commission.
Received on Sunday, 22 December 2013 22:08:24 UTC

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