[georss] "When" information in georss

[Sean Gillies]

The time period that the feed is valid for for ... that would be 
published/updated up until *now* right? It seems that the best way to 
indicate a future limit would be for the feed's origin server to set an 
"Expires" HTTP header. That would be going with the grain of the Web.

Cheers,
Sean

Andrew Turner wrote:
> Hi Charles & Brian - did you ever resolve this question?
> 
> I'm curious in particular in light of how best to support responses
> from OpenSearch Geo and Time queries
> 
> OpenSearch Time makes it easy to request a feed with a begin/end time
> points or periods - and then would be nice to support the response in
> the RSS/Atom (which with pubdate et al. only nominally support "end
> dates" (last updated))
> 
> http://www.opensearch.org/Specifications/OpenSearch/Extensions/Time/1.0/Draft_1
> 
> By having a time period for items as well as the overall feed would
> let consumers/aggregators understand the time period that the feed is
> valid for.
> 
> thanks,
> Andrew
> 
> On 7/19/07, Knoth, Brian D. <bknoth at mitre.org> wrote:
>>
>> Charles,
>>
>> You should probably contact me because a) we work for the same company  b)
>> the feeds you are accessing are the feeds from the system I work on and c)
>> this topic has been discussed through this community many times before. If
>> you are interested in the history, you can probably start here and work
>> backwards:
>> http://lists.eogeo.org/pipermail/georss/2007-March/001258.html
>>
>> brian
>>
>>
>>  ________________________________
>>  From: georss-bounces at lists.eogeo.org
>> [mailto:georss-bounces at lists.eogeo.org] On Behalf Of Holmes, Charles V.
>> Sent: Thursday, July 19, 2007 8:57 AM
>> To: georss at lists.eogeo.org
>> Subject: [georss] "When" information in georss
>>
>>
>>
>> In the effort of simplicity, I'm designing a system that only knows how to
>> handle one flavor of GeoRSS (currently simple).  There are layers between
>> the system and actual georss feeds that convert from whatever format the
>> feed is in into a simple georss feed.
>>
>> I'm currently looking at a feed with information such as:
>> <gml:TimePeriod>
>>   <gml:relatedTime>
>>     <gml:beginPosition/>
>>     <gml:endPosition/>
>>   </gml:relatedTime>
>> ...
>> </gml:TimePeriod>
>>
>> Is there any construct in simple georss to represent this information?  It's
>> basically a LineString and the position of each point is only at the
>> corresponding time in the TimePeriod.  Or should I make my understood flavor
>> of GeoRSS more complex?
>>
>> Thanks,
>> Charles
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>>
> 
>