[georss] GeoRss Encoding

[Chris Howell]

Hi,

I the company I work for is working on developing a Discrete Global Grid 
System, that not only displays user provided data, but also provides 
analysis capabilities and do data integration by conflating numerous 
data sources on a hexagonal grid. One of our aims is to eventually 
become a platform for our users to use and interop between various other 
applications. One of the ways that we're attempting to provide interop 
is by providing a common way to describe our feature data. I've been 
looking at the differences between GeoRSS and GML to describe this data 
in an interopable way.

One of the problems I am having is we convert from a co-ordinate system 
(WGS84) into our own hexagonal co-ordinate system that we work with. 
What I would like to do is find a way to encode both the lat/lon from a 
traditional coordinate reference system, as well as our own coordinates 
to describe the same point.
  
for example a lat/lon of 20, 48 in WGS84 might turn into a coodinate 
like A-02030 in my system. Since our application is going to be the only 
one reading our co-ordinate. What I'd like to do is encode it just as an 
extra attribute within a GeoRss feed. Essentially I'd like to have 
something that looks like this.

</georss:where>
  <entry>
    <title>Setting off</title>
    <link href="http://www.myisp.com/dbv/1"/>
    <id>http://www.myisp.com/dbv/1</id>

    <updated>2005-08-17T07:02:32Z</updated>
    <content>getting ready to take the mountain!</content>
    <georss:where>
      <gml:Point>
        <gml:pos>45.256 -110.45</gml:pos>

      </gml:Point>
    </georss:where>
    <PyxisCoord>A-02030</PyxisCoord>
  </entry>

I like the idea of being able to use GML geometries in GeoRss.

Where the PyxisCoord Attribute shows up in all the feeds that we send 
out. What this would allow us to do I am hoping is allow anyone who can 
receive GeoRss feeds to get data or things geo-coded in Pyxis as just a 
normal lat/lon and bring them into their system. And allow the Pyxis 
GeoRss reader to pay attention to the PyxisCoord attribute. What I would 
like to know is.

1. Is encoding information like this valid GeoRSS ?
2. Am I going to break any GeoRSS readers/aggregaters  out there ?
3. Have I violated anything in the GeoRSS standard that says I can't do 
this ?

Not knowing to much about GeoRss from what I've read and talked to 
people about I think this is possible but I figured ask the experts. Any 
help would be greatly appreciated.

Cheers
Chris Howell
Software Engineer
the PYXIS innovation - /Common Ground for Digital Earth/
Kingston, Ontario, Canada
w: www.pyxisinnovation.com
p: 613-389-6619


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.eogeo.org/pipermail/georss/attachments/20071012/8b2b0e54/attachment.html