[georss] "When" information in georss

[Allan Doyle]

On Aug 8, 2007, at 09:11 , Mikel Maron wrote:

> I like the formulation of these tags.
>
> My issue is that the concept of time, in RSS feeds, is not  
> necessarily dependent on location. Do these definitions belong in  
> GeoRSS, or in a TimeRSS namespace.
> This has been brought up before, and it's not really an actionable  
> objection, since there isn't any active effort out there to sort  
> out a RSS namespace for time and calendar stuff.
> So my suggestion, if we think these elements are a good start, is  
> to reach out and try to kick start a seperate process around Time.  
> We as a group certainly have the experience to see that through to  
> something usable and widely acceptable.

We could even have Simple and GML versions, to preserve the duality.

The group tag also seems to be far more general than either time or  
place. Is there a more generic set of grouping/set operators out there?

	Allan


>
> ----- Original Message ----
> From: Joshua Lieberman <josh at oklieb.net>
> To: georss at lists.eogeo.org
> Sent: Tuesday, August 7, 2007 10:44:13 PM
> Subject: Re: [georss] "When" information in georss
>
> Tatsuya,
>
> Good suggestion. My thinking is going this way as well. In parallel  
> to georss:where, we can have the two most common time definitions  
> as simple tags, and georss:when with GML elements inside for more  
> involved definitions. I might prefer the terms "georss:timeStamp"  
> and "georss:timePeriod", which would then map exactly onto gml  
> definitions, e.g. for
>
> <georss:timePeriod>2006-06-16T07:45:00.000Z  
> 2006-06-16T07:45:00.000Z</georss:timePeriod>
>
> <georss:when>
>    <gml:TimePeriod >
>        <gml:beginPosition>2006-06-16T07:45:00.000Z</gml:beginPosition>
>        <gml:endPosition>2006-06-16T07:45:00.000Z</gml:endPosition>
>    </gml:TimePeriod>
> </georss:when>
>
> or for <georss:timeStamp>2003-02-13T12:28-08:00</georss:timeStamp>
>
> <georss:when>
>    <gml:TimeInstant>
>     <gml:timePosition>2003-02-13T12:28-08:00</gml:timePosition>
>    </gml:TimeInstant
> </georss:when>
>
> The reason for adding time to the georss vocabulary would be to  
> specifically locate the "news as feature" in time, rather than some  
> other ambiguous time associated with the creation and transmission  
> of resources and news feeds.
>
> --The issue of grouped and multiple time-space tags is an  
> important, but different and more complicated issue that I'll speak  
> to sometime later.
>
> Cheers,
>
> Josh
>
> Joshua Lieberman
> mailto:josh at oklieb.net
> tel +1 (617) 630-8609
> fax: +1 (815) 717-9818
>
>
> On Aug 7, 2007, at 9:06 AM, Noyori Tatsuya wrote:
>
>> I like simple georss. I think we need more simple WHEN element like
>> the following.
>>
>> dateTime:
>> <georss:dateTime>2003-02-13T12:28-08:00</georss:dateTime>
>>
>> period:
>> <georss:period>2003-02-13T12:28-08:00 2003-02-13T12:30-08:00</ 
>> georss:period>
>>
>>
>> Moreover, I think we need GROUP element for multiple locations and
>> time like the following.
>>
>> <georss:group>
>>   <georss:dateTime>2007-08-07T00:00-08:00</georss:dateTime>
>>   <georss:point>45.256 -71.92</georss:point>
>>   <xhtml:div>sunny</xhtml:div>
>> </georss:group>
>> <georss:group>
>>   <georss:dateTime>2007-08-07T03:00-08:00</georss:dateTime>
>>   <georss:point>45.256 -71.92</georss:point>
>>   <xhtml:div>cloudy</xhtml:div>
>> </georss:group>
>> <georss:group>
>>   <georss:dateTime>2007-08-07T06:00-08:00</georss:dateTime>
>>   <georss:point>45.256 -71.92</georss:point>
>>   <xhtml:div>rainy</xhtml:div>
>> </georss:group>
>>
>> If you want to summarize duplicated elements, you can do as follows.
>>
>> <georss:group>
>>   <georss:point>45.256 -71.92</georss:point>
>>   <georss:group>
>>     <georss:dateTime>2007-08-07T00:00-08:00</georss:dateTime>
>>     <xhtml:div>sunny</xhtml:div>
>>   </georss:group>
>>   <georss:group>
>>     <georss:dateTime>2007-08-07T03:00-08:00</georss:dateTime>
>>     <xhtml:div>cloudy</xhtml:div>
>>   </georss:group>
>>   <georss:group>
>>     <georss:dateTime>2007-08-07T06:00-08:00</georss:dateTime>
>>     <xhtml:div>rainy</xhtml:div>
>>   </georss:group>
>> </georss:group>
>>
>> This is good idea, isn't it?
>>
>> -- 
>> Tatsuya
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>
>
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-- 
Allan Doyle
+1.781.433.2695
adoyle at eogeo.org