RE: [linking-data] What should I link to? (or link between)

More ‘hic sunt dracones aut leones’:

When I produced a machinable version of the boundaries of the sea and oceans, in the original documents there was no consistency in whether boundaries were clockwise or anticlockwise, land or water, and a variety of ways of specifying locations such as lat/ long, features and bearings. Treatment of small islands also seemed random – a sea boundary might go straight across the land!

Chris

From: Simon.Cox@csiro.au [mailto:Simon.Cox@csiro.au]
Sent: Wednesday, October 07, 2015 11:12 PM
To: ssimmons@opengeospatial.org; eparsons@google.com
Cc: Little, Chris; j.d.blower@reading.ac.uk; l.vandenbrink@geonovum.nl; public-sdw-wg@w3.org
Subject: RE: [linking-data] What should I link to? (or link between)

Also see this http://gadm.org/ which has already done most of the work (though has no authority).

When I was looking at an earlier version I also detected that they had a problem with multi-polygons, so had artificially split some admin areas in multiple pieces, one polygon per. Can’t find the relevant visualization any more, but be warned.

Simon

From: Scott Simmons [mailto:ssimmons@opengeospatial.org]
Sent: Wednesday, 7 October 2015 9:44 PM
To: Ed Parsons <eparsons@google.com<mailto:eparsons@google.com>>
Cc: Little, Chris <chris.little@metoffice.gov.uk<mailto:chris.little@metoffice.gov.uk>>; Jon Blower <j.d.blower@reading.ac.uk<mailto:j.d.blower@reading.ac.uk>>; Linda van den Brink <l.vandenbrink@geonovum.nl<mailto:l.vandenbrink@geonovum.nl>>; SDW WG (public-sdw-wg@w3.org<mailto:public-sdw-wg@w3.org>) <public-sdw-wg@w3.org<mailto:public-sdw-wg@w3.org>>
Subject: Re: [linking-data] What should I link to? (or link between)

There is a new effort underway to attempt to continue/improve work from the UN several years ago to build as definitive as possible political boundary data set.

http://devinit.org/#!/post/joined-data-building-blocks-common-standards


The effort is funded in part by the Omidyar Network.

https://www.omidyar.com/blog/setting-high-and-compatible-standards


Mark Reichardt and I met with representatives of the effort in recent weeks with the intent that we form linkages to the OGC and alliance partner networks.

Perhaps this could become the least controversial stamp collection available for our work.

Scott

On Oct 7, 2015, at 4:04 AM, Ed Parsons <eparsons@google.com<mailto:eparsons@google.com>> wrote:

Well from the many bruises and scars I carry from Google's attempt to map world boundaries, I can assure you there is no single authoritative source, that said I think this "stamp collecting" process is really useful..

ed


On Wed, 7 Oct 2015 at 10:30 Little, Chris <chris.little@metoffice.gov.uk<mailto:chris.little@metoffice.gov.uk>> wrote:
There was a recent discussion in public-locadd@w3.org<mailto:public-locadd@w3.org> about addresses and registries, with side mentions of territories, regions etc. No real consensus, so that indicates to me that Jon’s suggestion of ‘stamp collecting’ may have some merit. Here is my starting contribution with some obscurities that may be useful to Jon at least.

•         Country codes (3 and2 letter): ISO 3166
•         WMO regions and territories in some unprocessable WMO Manual which I can dig out, but many years ago I copied them into the:
•         NASA GCMD keywords at http://gcmdservices.gsfc.nasa.gov/static/kms/locations/locations.csv

•         Addressing UML conceptual model ISO 19160-1, national schema, such NZ, being developed now
•         IHO Limits to the Seas and Oceans http://www.iho.int/mtg_docs/com_wg/S-23WG/S-23WG_Misc/Draft_2002/Draft_2002.htm. I made a shapefile of this many years ago, and it was somewhere in the UK NODC
Is that what you had in mind Jon?

Chris

From: Jon Blower [mailto:j.d.blower@reading.ac.uk<mailto:j.d.blower@reading.ac.uk>]
Sent: Tuesday, October 06, 2015 11:32 AM
To: Linda van den Brink
Cc: SDW WG (public-sdw-wg@w3.org<mailto:public-sdw-wg@w3.org>)

Subject: Re: [linking-data] What should I link to? (or link between)


Yes - and I would also like to link to an authoritative database of boundaries (geometries) representing accepted definitions of countries, regions, continents, oceans, seas and so forth. Some of these might be present in INSPIRE (I don’t know) or perhaps in more specialist databases. Might be useful to collect these.

Jon


On 6 Oct 2015, at 11:03, Linda van den Brink <l.vandenbrink@geonovum.nl<mailto:l.vandenbrink@geonovum.nl>> wrote:

This has become a thread about linking into coverages, but my initial understanding of this question leads me to give answers more in the direction of ‘which reference geo data on the web should I link to’

So
-          GeoNames
-          Dbpedia
-          INSPIRE or national data about addresses, geographical names, etc.
-          ...


--
Ed Parsons
Geospatial Technologist, Google
Google Voice +44 (0)20 7881 4501
www.edparsons.com<http://www.edparsons.com/> @edparsons