[georss] What's next--a query API

[Jeff Harrison]

Yes, of course the WFS includes BBOX, and we use it frequently in all our
software. In my previous message I meant to indicate that keeping the focus
on 'BBOX queries' was desirable since this would seem to be the most
straightforward method to meet requirements and ensure rapid adoption in
many different types of software.

Regards,
Jeff


-----Original Message-----
From: georss-bounces at lists.eogeo.org [mailto:georss-bounces at lists.eogeo.org]
On Behalf Of Raj Singh
Sent: Monday, May 08, 2006 9:17 PM
To: georss at lists.eogeo.org
Subject: Re: [georss] What's next--a query API

After Ron's message I looked this up, and it turns out the WFS specification
(version 1.1, page 95) does have a little-known URL encoding of exactly this
format, including the optional specification of the SRS (unlike WMS which
requires the SRS).

So I guess we both learned something about WFS tonight (for those of you who
don't know, Jeff used to work for OGC, and I currently work for them, so
even OGC staffers don't know all the nooks and crannies of every
specification).

--
Raj


On 5/8/06 8:59 PM, "Jeff Harrison" <jharrison at thecarbonproject.com> wrote:

> Probably most folks just want to get things in a specified bounding box,
so
> the WMS BBOX parameter is likely the simplest way to start.
> 
> -----Original Message-----
> From: georss-bounces at lists.eogeo.org
[mailto:georss-bounces at lists.eogeo.org]
> On Behalf Of Ron Lake
> 
> I could agree to this but I think you should reference WFS rather than
> WMS since you are asking for data and not pictures.
> 
> Cheers
> 
> Ron
> 
> -----Original Message-----
> From: georss-bounces at lists.eogeo.org
> [mailto:georss-bounces at lists.eogeo.org] On Behalf Of Raj Singh
> Sent: May 8, 2006 5:45 PM
> To: Danny Ayers; georss at lists.eogeo.org
> Subject: [georss] What's next--a query API
> 
> What's the first thing you want to do after you have a GeoRSS feed?
> Do a geographic query of course.
> 
> I'm sure we can think of all kinds of interesting and useful spatial
> queries, like distance from something else or the overlap of two
> geographies, but the thing people will probably want to do 95% of the
> time
> is get only things in a specified bounding box.
> 
> How about we promote this as a recommended feature of GeoRSS-enabled
> software? Here's the proposal:
> 
> 1. A GeoRSS bounding box query consists of a feed URI plus a BBOX
> parameter,
> consisting of minx,miny,maxx,maxy. This is the same as the WMS BBOX
> parameter.
> 
> 2. A service can optionally support multiple coordinate reference
> systems by
> adding support for an SRS parameter, which would contain an EPSG code
> (once
> again like WMS).
> 
> --
> Raj
> 
> 
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