W3C home > Mailing lists > Public > public-poiwg@w3.org > October 2011

Re: data model and example

From: Raj Singh <rsingh@opengeospatial.org>
Date: Fri, 30 Sep 2011 23:57:33 -0400
Cc: "public-poiwg@w3.org W3C" <public-poiwg@w3.org>
Message-Id: <38339A46-2CF5-4403-BC36-C6F42B7821CF@opengeospatial.org>
To: "Seiler, Karl" <karl.seiler@navteq.com>
Great! I'd love to start writing examples. I'd like a few more details though. Can you write up a series of use cases in short bullet points. Here are some examples already on my list:
- city in the US
- county in the US
- state in the US
- the US
- restaurant in NYC (with: opening/closing hours, menu, ratings, reviews)
- airport (links to airlines serving the airport?)
- museum (links to items in the collection?)
- historic site
- Boston Freedom Trail
- a bike route

The OGC: Making location count...

On Sep 30, at 3:28 PM, Seiler, Karl wrote:

> Reviewed the example XML via the link below. Stared at it for a good bit. Made a few permutations of my own to see if I got how the layering works. I like it very much.
> This is good! This works. This is useful.
> I would like to make some smallest (crispest - minimal) to largest examples (all rich content as per fully blown out real world POIs fully and explicitly rendered) based on this model.
> _______________________________
> Karl Seiler
> Director Location Technology & Services
> NOKIA Location and Commerce - Chicago
> (T)  +312-894-7231
> (M) +312-375-5932
> -----Original Message-----
> From: public-poiwg-request@w3.org [mailto:public-poiwg-request@w3.org] On Behalf Of Raj Singh
> Sent: Friday, September 30, 2011 1:22 PM
> To: roBman@mob-labs.com
> Cc: public-poiwg@w3.org
> Subject: Re: data model and example
> On Sep 30, at 12:35 AM, Rob Manson wrote:
>> Hey Raj,
>>> No. I wanted to specify the author, but I'm having trouble figuring
>>> out how to represent it. See:
>>> http://rajsingh.org/poiwg/poi_logan_2.xml
>> Yeah I think that's better.  I'd assume if <value> is not defined then
>> the full content is assumed to be the payload?
> I suppose that's a possibility. It would look cleaner, but as a developer, I'd rather just always know to parse the <value> element as text, rather than have a conditional check to see if there are elements within <description>, and if not then treat <description> as text.
>>>> Is the <point><Point>...</Point></point> double nesting needed?
>>> Yes. Everything in <Point> is straight from GML 3.3. And the
>>> double-nesting will be useful. For one, it will avoid the problem with
>>> <description> above, where you don't want to mix CDATA with an
>>> element. I.e. it's easy to slip an <author> element in as a child of
>>> <point> without messing with the location specification in <Point>.
>> Fair enough.  I'd also like to be able to support the simpler geo:uri
>> too as a lot of developers would be happy with just that too.
> At the face-to-face we decided to put a stake in the ground here and have a single way to represent a point. There are too many "pet" point formats around. It would be better in the long run for the world to focus on a single one for interoperability. And what better place to have the canonical one than the W3C POI spec? And for practical reasons, if you're generating POIs, writing <Point><posList> instead of geo:uri is the least of your problems! And as a consumer of POI data (at least the XML format), it's nice to always know to find the coordinates in the <posList> element.
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Received on Saturday, 1 October 2011 03:57:59 UTC

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