[georss] Transport of Toponyms with GeoRSS
Ron Lake
rlake at galdosinc.com
Tue Aug 15 19:53:44 EDT 2006
Hi,
Placement of labels is one of the knotty aspects of toponymy. The easy
part is assigning names to features. The harder part is placing name
labels on maps. Most GIS systems do this by binding presentation and
content- meaning that label "features" are created that associate the
labels with geospatial locations. Of course these locations need not be
co-incident with the feature in question and are usually NOT. Automated
label generation and placement in an environment that strictly separates
presentation and content is possible, but is unlikely to meet with
presentation requirements of cartographers - meaning that there will be
ambiguities or that one must use mechanisms that provide names through
means other than fixed labels on the screen (e.g. touch a feature and
see its name).
Ron
-----Original Message-----
From: georss-bounces at lists.eogeo.org
[mailto:georss-bounces at lists.eogeo.org] On Behalf Of Josh at oklieb
Sent: August 15, 2006 3:54 PM
To: georss at lists.eogeo.org
Subject: Re: [georss] Transport of Toponyms with GeoRSS
Aye, there's the rub. What is it you are describing with a toponym?
The resource described by the RSS entry (probably not in general a
toponym) or the "feature-ness" of the resource which is bestowed upon
it by GeoRSS.
It seems you want to construct a link with two characteristics: a
zoom-in action and a label to suggest what is geographically being
zoomed in to. The former could be addressed with the "radius"
attribute; the latter is probably a use case for adding a "name" or
"featurename" attribute to georss:point / georss:where.
Just a heads up that applying georss to update w3c geo (and thereby
also making it more palatable to the microformat-ists) means in all
likelihood coming up with an rdf serialization of georss. This means
that the attributes we have hung on the georss properties such as
georss:point cannot be there (being properties themselves, they can
only describe a node or concept). This means either turning
somersaults conceptually or moving the attributes up into separate
rss properties, e.g. (rss 1.0)
<item rdf:about=
'http://www.oreillynet.com/pub/wlg/8466?CMP=OTC-TY3388567169'>
<title>Live Coverage XML 2005 (Tuesday Keynotes)</title>
<link>http://www.oreillynet.com/pub/wlg/8466?CMP=OTC-TY3388567169</
link>
<description>
<![CDATA[A live look at the XML Keynotes and seminal
talks.]]>
</description>
<dc:creator>Kurt Cagle</dc:creator>
<dc:date>2005-11-15T07:45:58-08:00</dc:date>
<georss:featuretypetag>TGN:City</georss:featuretypetag>
<georss:featurename>US_Cities:Albany</georss:featurename>
<georss:radius>5000</georss:radius>
<georss:point> 46.183 -123.816</georss:point>
</item>
In essence, the <title> property describes the item resource, while
the <georss:featurename> property describes the item "feature"
I'll look for the time to explain this more graphically.
--Josh
On Aug 15, 2006, at 6:27 PM, Allan Doyle wrote:
>
> On Aug 15, 2006, at 18:09, noiv wrote:
>
>>> Couldn't you simply use the RSS "title" field for the link?
>>>
>>> Mikel
>>
>> Hi Mikel,
>>
>> thanks for input. Publishers use the title tag as a description
>> of the content. I think there is no chance to convince for example
>> Reuters and have toponyms only as title.
>>
>> Which tag is designed to describe the coordinates
>> of a GeoRSS feed entry in a human readable way?
>>
>
> Is this perhaps the difference between RSS and a microformat? My
> impression is that microformats are meant to encapsulate information
> that is meant to still show up on the web page whereas RSS is really
> not meant to be "human readable" in the sense of being shown directly
> on a web page.
>
> Thus if you have a microformat + CSS, you can see something useful.
> If you have RSS + CSS that's not always the case, you may also need
> some XSLT or some other processing to make it "pretty" again.
>
> One of these days we need to work out the microformat serialization
> of GeoRSS. Ideally by working together with the microformat folks.
>
> Allan
>
>> --
>> noiv - ExploreOurPla.net
>> _______________________________________________
>> georss mailing list
>> georss at lists.eogeo.org
>> http://lists.eogeo.org/mailman/listinfo/georss
>
> --
> Allan Doyle
> +1.781.433.2695
> adoyle at eogeo.org
>
>
>
> _______________________________________________
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