Re: Geographic location representations?

Andrew

I agree with using WGS84 here

At 02:25 AM 7/7/2001 -0700, Andrew Daviel wrote:
>On Tue, 26 Jun 2001, Paul Knight wrote:
>
>> Glad to see the WG chartered.
>>
>> I see the plan is that "the working group will select an already
>> standardized format to recommend for use in representing location per se."
>> I am working on an I-D which uses location information, and am very
>> interested in the candidate formats.
>>
>> Is there a list of known formats? pointers?
>
>I wrote a somewhat reductionist draft which is mentioned in the charter,
>viz.
>http://geotags.com/geo/draft-daviel-html-geo-tag-05.html
>
>This is intended for adding location data to legacy HTML documents using
>META elements familiar to most Web authors. The number of elements and
>options is deliberately small in order to minimize errors when coding by
>hand. XML is probably an appropriate encapsulation for new applications.
>
>Other formats I have come across include:
>DublinCore (coverage) http://dublincore.org/documents/1998/09/dces
>FGDC http://www.fgdc.gov/
>ISO/TC211 http://www.statkart.no/isotc211/
>NMEA 0183 http://vancouver-webpages.com/peter/nmeafaq.txt etc.
>vCard RFC2445 http://www.alternic.org/rfcs/rfc2400/rfc2426.txt
>RFC1876 http://www.alternic.org/rfcs/rfc1800/rfc1876.txt
>ISO6709 ftp://ftp.informatik.uni-erlangen.de/pub/doc/ISO/ISO-6709-summary
>
>Many of the available formats are created for specific purposes and
>may not be suitable for this WG. For instance, NMEA is designed for
>connecting marine autopilots to navigation sets such as GPS.
>FGDC and other GIS data formats I believe are created to describe
>objects such as maps or satellite images, typically rectangular
>areas aligned North-South.
>
>I suggest adopting WGS-84, because that is what the GPS system uses and
>GPS chips are becoming ubiquitious. Converting between different datums
>is a big headache in my opinion.
>There are some issues concerning altitude using WGS-4 (altitude is not
>intuitive, since the datum is not
>"ground level", or "sea level" for coastal areas, but a geometric
>construct) but it satisfies the requirement of a single universal
>measurement grid for location-based devices.
>
>--
>Andrew Daviel
>Vancouver Webpages
>
>
>

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Received on Fri Jul 13 14:32:50 2001