[georss] [OpenLayers-Users] GeoRSS and layers

Sean Gillies sgillies at frii.com
Tue Jan 16 09:35:07 EST 2007


Mikel Maron wrote:
> Hi Yves
> 
> Yes, both "GeoRSS" and "MediaRSS" are namespaces for focused extensions to RSS feeds.
> I think it's a good idea to reuse existing standards and conventions when appropriate and easy,
> and in worldKit, GeoRSS and elements of MediaRSS are used to do just what you intend.
> And "category" seems a good analogy to layer.
> 
> The SVG comment was kind of offhand and not thought through. Really I was only particularly thinking
> of the styling properties of SVG .. http://www.w3.org/TR/SVG11/styling.html .. which more or less
> covers the kind of things in SLD.
> 
> With worldKit, the needs for styling (which is accomplished through a seperate xml config file) have been
> basically (circle, square, triangle) scale, linestyle, color, alpha, & thickness. That group of styles is
> "lightweight" .. easy to understand and implement.
> 
> Perhaps CSS is appropriate for specifying styling information for GeoRSS. Lots of issues there, but I
> quite like that direction.
> 
> Mikel

Mikel, I like the CSS approach too, and OpenLayers has been making big 
strides towards being more friendly to user CSS.

On the other hand, I don't think that GeoRSS should get too concerned 
with feature symbolization. In my opinion, once you start mixing feature 
geometry and styling together, these elements are no longer metadata 
fields in the same class as "author", "published", and "updated", but 
become *content*. In the Atom case, you'd have to put this stuff in an 
atom content element. We're already free to put just about anything in 
an atom content element including KML, SVG, or SLD with inline features, 
so there's no need to invent anything new for that purpose.

Cheers,
Sean




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