[georss] Discovery of georss and other geographic information?

[Josh@oklieb]

On Aug 30, 2006, at 10:38 AM, Andrew Turner wrote:

> Stefan F. Keller <sfkeller at gmail.com> wrote:
>>
>> P.S. Still: Anyone who knows the status of GeoRSS (simple) as  
>> microformat?
>>
>
> What is the purpose of a GeoRSS microformat? Isn't Geo*RSS* targeted
> and meant for RSS/Atom? There already is a 'geo' and 'adr' Microformat
> with widespread support. If you're just looking at adding line,
> polygon, etc. to a Microformat then expand on geo, but it doesn't seem
> worth it, or a good idea, to try and force GeoRSS into XHTML.

GeoRSS is a general geographic content model which is consistent with  
OGC and ISO standards for geographic representation.  Serializations  
of that model have then been defined for use in RSS and atom.

There is currently work as part of the W3C Geospatial group on an RDF  
serialization to be used as an (important) update to W3C GEO.

There has also been work on an XHTML serialization of the GeoRSS  
content model which was published earlier on the georss website, but  
it remains to achieve some consensus on this, both that it is  
important to do this (for example, so that GeoRSS items can be  
reliably constructed from the tags in an HTML resource), and how to  
go about it (span, div, object, etc.). In principle it could be very  
simple along the pattern of the geo microformat:

<span class="georss:point" title="43.3432 -69.2341">...</span>

and/or

<span class="georss:point" >43.3432 -69.2341</span>

The former makes more sense at least to me in terms of an intent to  
tag specific content in the HTML document with location information.

To add more information one might add another level of span tags:

<span class="georss">
    <span class="georss:line"  title="43.3432 -69.2341 42.3432  
-68.2341">
        ...
    </span>
    <span class="georss:radius" title="5000"/>
</span>

There is certainly some question as to the semantic appropriateness  
of using the class attribute to hold what is really a property name  
such as georss:point and using the title attribute for holding what  
is really the value of that property. A more appropriate approach  
might be to use the OBJECT tag, but that seems less compatible with  
the present microformat style.

Cheers,

Josh

>
> There was a howto on possibilities of mixing RDF and GeoRSS:
> http://www.geospatialsemanticweb.com/2006/06/08/mixing-rdfa-with- 
> georss
>
>
> Andrew
>
> -- 
> Andrew Turner
> ajturner at highearthorbit.com        42.4266N x 83.4931W
> http://highearthorbit.com              Northville, Michigan, USA
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