[georss] Time and Space

[Mikel Maron]

Brian

There was a thread on this last month that went into the issues .. http://lists.eogeo.org/pipermail/georss/2007-January/

But I should've been more specific .. you can include any kind of GML payload in GeoRSS GML, which could have multiple geometries,
but those all would be included in a single georss:where.

-Mikel


----- Original Message ----
From: "Knoth, Brian D." <bknoth at mitre.org>
To: Mikel Maron <mikel_maron at yahoo.com>; georss at lists.eogeo.org
Sent: Monday, February 12, 2007 7:41:39 PM
Subject: RE: [georss] Time and Space



 



Mikel,

 

I'll take a look at your links in a moment, but just 
quickly wanted to respond to the issue of not being able to have multiple 
<georss:where> nodes under an <item>. I know that I read this 
restriction somewhere else and my only question is simply why not?  I don't 
know of any restriction defined in the RSS specification that limits child 
elements to only a single occurrence, is there?

 

thanks,

brian



  
  
  From: Mikel Maron 
  [mailto:mikel_maron at yahoo.com] 
Sent: Monday, February 12, 2007 2:38 
  PM
To: Knoth, Brian D.; georss at lists.eogeo.org
Subject: 
  Re: [georss] Time and Space



  

  
  Hi 
  Brian

I'm very interested in incorporating time, visualizing and acting 
  on change. Gave a presentation outlining some thoughts on this 
  foss4g..
http://www.foss4g2006.org/contributionDisplay.py?contribId=161&sessionId=47&confId=1

Like 
  Raj, I think time could be seen as having wider application than just space. 
  I've re-used the RSS and Atom time-oriented fields for some
basic 
  stuff.

http://worldkit.org/doc/time.php

For richer 
  time specifications, there hasn't been agreement on a single encoding. 
  Upcoming.org has a bit to say on this..

http://community.upcoming.org/w/index.php/Nerdy_Questions#What_are_the_guidelines_you_follow_when_creating_RSS_feeds.3F

They're 
  using xCal. There's also an old RSS 1.0 module called Event .. http://web.resource.org/rss/1.0/modules/event/


While 
  writing this I just saw your followup. One thing about your usage, you can't 
  associate multiple georss:where elements with a single item;
it's a one to 
  one relationship. 

Best
-Mikel


  ----- 
  Original Message ----
From: "Knoth, Brian D." 
  <bknoth at mitre.org>
To: georss at lists.eogeo.org
Sent: Monday, 
  February 12, 2007 1:40:54 PM
Subject: [georss] Time and Space


  Hi,

I'm new to this mailing list, yet have been advocate of RSS 
  and geoRSS
on some internal projects for a while. I do have a few concerns 
  with
regard to real practical acceptance of geoRSS, yet, I understand 
  the
need to try and balance simplicity and expressiveness. As such, we 
  are
attempting to utilize GML geoRSS, however, we have needed to extend 
  the
GML geoRSS with the ability identify time as well as space. 

I 
  wanted to just send out our approach to doing this to get comments
from 
  anyone else who might be interested in this on the mailing list.
Simply 
  put, we have added a GML TimePeriod to each of the geoRSS nodes
along with 
  the spatial representation. Here is an 
  example:

<georss:where>
    <gml:TimePeriod>
   
          <gml:begin>2006-06-17T09:55:00Z</gml:begin>
        <gml:end>2006-06-17T10:30:00Z</gml:end>
    </gml:TimePeriod>
    <gml:Point>
        <gml:pos>37.65356495497155 
  -114.5048399056895</gml:pos>
    </gml:Point>
</georss:where>

All 
  comments would be 
  appreciated.

Regards,
brian
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