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

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.