- From: Johan Hjelm <hjelm@w3.org>
- Date: Mon, 01 May 2000 09:12:12 -0400
- To: Dan Connolly <connolly@w3.org>
- Cc: Andrew Daviel <andrew@daviel.org>, www-talk@w3.org, www-rdf-interest@w3.org
Well, we did decide to try to come up with a unified data format based on GML (the OpenGIS language). Generally, embedding stuff in HTML is a quick fix for what actually is a larger problem. One intention is that the CC/PP and XML Document Profiles should be usable to contain this stuff. This will also enable it to be processed as part of the general parametrization of content, instead of as a separate application, since there are often several parameters that together enable a contextualization (if "the weather is nice" and "I am in Miami", then "show me the way to the beach"). Johan At 23:43 2000-04-28 -0500, Dan Connolly wrote: >Andrew Daviel wrote: >> >> Last year I posted some proposals for geographic tagging of Web pages. >> It was pointed out that there might be more interest if there >> was an application. >> >> So, now there is a demo application - http://geotags.com/script/geosearch > >Cool service! I have a suggestion about the markup... > >> Other changes - the "country" tag has been dropped, merged into "region". >> "region" now formally uses ISO 3166-2 country subdivision codes, available >> from http://geotags.com/geo/iso3166 (I think - the 'net's broken 'twixt me >> and there at present). ISO 3166-2 for the US and Canada is trivial - "CA" >> or "US" hyphen State/Province e.g. US-NY or CA-BC. ISO 3166-1 alone is >> allowed for geo.region, e.g. "RU" - the old "geo.country" tag. >> >> geo.position follows RFC 2426 (vCard), which many people are now using >> (at least, lat;long is in the vCard RFC and many people are using vCard, >> which is admittedly not quite the same thing as many people using lat;long >> ...) >> >> Precis: >> >> <META NAME="geo.position" content="48.54;-123.84"> >> >> describes a resource at position 48.54 degrees North, 123.84 degrees >> West. > >I was going to suggest you use RDF and sketch a schema, but I see >you've considered that... > >"The tags are described in terms of current HTML practice, which does > not preclude them being represented in another manner such as >RDF or > XML. " > -- http://geotags.com/geo/geotags2.html > >Meanwhile, I highly recommend you ground the terms in your vocabulary >in the Web using the HTML profile syntax: > > Meta data profiles > >http://www.w3.org/TR/1998/REC-html40-19980424/struct/global.html#h-7.4.4.3 > >for example, just change the HEAD tag to: > > <HEAD profile="http://geotags.com/geo/geotags2.html"> > >That way (1) if somebody else uses the name "geo.region" for something >else, you can tell them apart, and (2) if somebody finds an HTML >document and wonders what the heck geo.region means, they have >a place to look. > > > >> <META NAME="geo.placename" content="London, Ont"> >> <META NAME="geo.region" content="CA-ON"> >> >> describes a resource in London, Ontario, Canada >> >> These tags are only meaningful, and should only be used, for >> pages that relate to a specific place. You put geo.position on the >> page for your walk-in retail store, not on your resume or >> software manual. (geo.region is OK if the page really does have some >> regionality, e.g. "CA" on Canadian tax preparation software) >> >> More information at http://geotags.com >> >> Andrew Daviel >> Vancouver Webpages > >And now some notes before I forget... > > -- it should be easy to use XSLT to screen-scrape this markup into RDF > http://lists.w3.org/Archives/Public/www-rdf-interest/2000Mar/0103.html > > -- relationship to dc.coverage? > http://purl.org/dc/elements/1.0/coverage > > -- any relevant stuff from the posdep workshop? > >W3C - WAP Forum Workshop on Position Dependent Information Services >INRIA Sophia Antipolis, France, February 15 - 16, 2000 >http://www.w3.org/Mobile/posdep/ > >I added www-rdf-interest to the cc: list; I hope you don't mind. > >-- >Dan Connolly, W3C http://www.w3.org/People/Connolly/ ************************************************************ Johan HJELM Ericsson Research, User Applications Group Currently visiting engineer at the W3C Chair, CC/PP Working Group and WCA Interest Group The World Wide Web Consortium hjelm@w3.org http://www.w3.org/People/W3Cpeople.html#Hjelm Fax +1-617-258 5999, Phone +1-617-253-9630 MIT/LCS, 545 Tech. Sq. Cambridge MA 02139 USA Opinions are personal, always my own, and not necessarily those of Ericsson or the W3C. ============================================================
Received on Monday, 1 May 2000 09:13:16 UTC