[georss] Multiple GeoRSS representations in one feed?

[Pat Cappelaere]

Andrew,

I think you are right.
I had raised the question at FOOS4G with Mikel:
As a publisher, do I need to encode GeoRSS simple and Pro with the same
entry? (actually, this could also include geo:lat/long to support Yahoo
GeoRss)

This is something that we ought to address ASAP.
Pat.


> From: Andrew Turner <georss at highearthorbit.com>
> Date: Fri, 20 Oct 2006 09:09:27 -0400
> To: Pat Cappelaere <pat at cappelaere.com>
> Cc: Allan Doyle <adoyle at eogeo.org>, <georss at lists.eogeo.org>
> Subject: Re: [georss] Multiple GeoRSS representations in one feed?
> 
> I think Allan's question was about publishing multiple feeds using
> different formats. So Jason, for example, could publish a Simple using
> points, and then a more complex using GML or Simple with lines. Both
> feeds would have the same items, just different representations of the
> geographic data.
> 
> What actually would be interesting, is if there is any problem
> publishing 2 representations in the same feed? RSS parsers ignore
> items they don't understand, so the Simple point readers would ignore
> the GML. And perhaps a more featured GML parser should consume the
> "highest fidelity" geometry from a single item. So the GML ring would
> override the Simple point.
> 
> Any particular problems with this? Or is it just confusing?
> 
> The potential problem with multiple feeds w/ different representations
> is that if a user wants to switch the feeds from Simple to GML in
> their reader, are the "read/unread" kept (GUID's the same), etc.
> 
> Andrew
> 
> 
> On 10/20/06, Pat Cappelaere <pat at cappelaere.com> wrote:
>> Allan,
>> 
>> It is not unusual for us to display more than one feed on the map.  They are
>> displayed on different layers so they can be turned on/off.
>> This is really no different than feature layers.
>> Pat.
>> 
>> 
>>> From: Allan Doyle <adoyle at eogeo.org>
>>> Date: Fri, 20 Oct 2006 08:30:38 -0400
>>> To: <georss at lists.eogeo.org>
>>> Subject: Re: [georss] Multiple GeoRSS representations in one feed?
>>> 
>>> I guess I have to wonder also to what extent it's bad to have two
>>> feeds? If we try to cram everything into one representation, then we
>>> climb up the complexity wall again and leave the simple people (like
>>> me) behind.
>>> 
>>> Allan
>>> 
>>> On Oct 20, 2006, at 07:23, Raj Singh wrote:
>>> 
>>>> As Ron said, holes in polygons aren't supported in simple, but are
>>>> possible in GeoRSS GML. You'll still have the chicken and egg issue
>>>> that you're not likely to find many clients (that aren't "real"
>>>> mapping systems) that will correctly render them. That, and
>>>> aggregates, begin to stretch the limits of GeoRSS. If those
>>>> sophisticated geometries are key to what you're doing, you may be in
>>>> the market for a heavier standard, like GML Simple Features Profile,
>>>> listed on this page <http://www.opengeospatial.org/standards/gml>.
>>>> ---
>>>> Raj
>>>> 
>>>> 
>>>> On Oct 20, 2006, at 8:52 AM, Jason Birch wrote:
>>>> 
>>>>> Is there any way to represent donut polygons in simple?  I can just
>>>>> provide the exterior ring, but it would be nice to put holes where
>>>>> they belong.
>>>>> 
>>>>> And aggregates... I have quite a few parcels that were split by
>>>>> roads, and are actually part of the same legal feature.  I don't
>>>>> really need to have them joined as a MultiGeometry, but I can't
>>>>> tell from the XSD whether multiple geometries are allowed inside
>>>>> the "where".
>>>>> 
>>>>> Jason
>>>> 
>>>> _______________________________________________
>>>> georss mailing list
>>>> georss at lists.eogeo.org
>>>> http://lists.eogeo.org/mailman/listinfo/georss
>>> 
>>> --
>>> Allan Doyle
>>> +1.781.433.2695
>>> adoyle at eogeo.org
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> georss mailing list
>>> georss at lists.eogeo.org
>>> http://lists.eogeo.org/mailman/listinfo/georss
>> 
>> 
>> _______________________________________________
>> georss mailing list
>> georss at lists.eogeo.org
>> http://lists.eogeo.org/mailman/listinfo/georss
>> 
> 
> 
> -- 
> Andrew Turner
> ajturner at highearthorbit.com        42.4266N x 83.4931W
> http://highearthorbit.com              Northville, Michigan, USA