Mikel Maron What's Next, GeoRSS FOSS4G 2006 What's Next, GeoRSS Mikel Maron [email protected][email protected] worldKit

Mikel Maron What's Next, GeoRSS FOSS4G 2006

What's Next, GeoRSS

Mikel Maron [email protected]

http://brainoff.com/weblog/

worldKit / OpenStreetMap / GeoRSS

FOSS4G, September 15, 2006


GeoRSS?

not a complicated tech¡an agreement!

we want to share place


RSS?

“the unix pipe of the internet”


In the Wilds


georss.orgOGC lightweight standard

W3C Incubator



Other Properties

elev

floor

radius

featuretypetag

featurename

relationshiptag


GML and Simple

<georss:where> <gml:Point> <gml:pos>45.256 -71.92</gml:pos> </gml:Point></georss:where>

<georss:point>45.256 -71.92</georss:point>


GeoRSS Simple

<entry> <title>M 3.2, Mona Passage</title> <link href="http://example.org/2005/09/09/atom01"/> <id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id> <updated>2005-08-17T07:02:32Z</updated> <summary>We just had a big one.</summary> <georss:point>45.256 -71.92</georss:point> </entry>


Simple Line, Polygon, Box

<georss:line>45.256 -110.45 46.46 -109.48 43.84 -109.86

</georss:line>

<georss:polygon>45.256 -110.45 46.46 -109.48 43.84 -109.86 45.256 -110.45

</georss:polygon>

<georss:box>42.943 -71.032 43.039 -69.856</georss:box>


<entry> <title>M 3.2, Mona Passage</title> <link href="http://example.org/2005/09/09/atom01"/> <id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id> <updated>2005-08-17T07:02:32Z</updated> <summary>We just had a big one.</summary> <georss:where> <gml:Point> <gml:pos>45.256 -71.92</gml:pos> </gml:Point> </georss:where></entry>

GeoRSS GML Point


GML Line, Polygon, Box <georss:where>

<gml:LineString>

<gml:posList>

45.256 -110.45 46.46 -109.48 43.84 -109.86

</gml:posList>

</gml:LineString>

</georss:where>

<georss:where>

<gml:Polygon>

<gml:exterior>

<gml:LinearRing>

<gml:posList>

45.256 -110.45 46.46 -109.48 43.84 -109.86 45.256 -110.45

</gml:posList>

</gml:LinearRing>

</gml:exterior>

</gml:Polygon>

</georss:where>

<georss:where>

<gml:Envelope>

<gml:lowerCorner>42.943 -71.032</gml:lowerCorner>

<gml:upperCorner>43.039 -69.856</gml:upperCorner>

</gml:Envelope>

</georss:where>


Feed Format Neutral

RSS1.0 / RDF / RSS 2.0 / Atom / Microformat

Simple / GML / W3C


What can you do with it?


USGS Earthquake GeoRSS feed


EC JRC Tsunami Simulator


GDACS


Scattershot of Potentials

● Monitoring Geographic Wikis● Mobile● Sensors● GIS Time Navigation● Tear down the walls


Support ... as of 11:30 am


Open Source Support

● clients: MapBuilder, OpenLayers, worldKit● libraries: Mapstraction, SPARQL geo

extensions, Java Rome ● GeoBliki● WorldWind plugin● GeoServer● FoFRedux● GeoPress


Yahoo!

Maps API -- Upcoming -- Weather -- Traffic – Flickr!! (GeoRSS Simple) ...


Microsoft

Version 3 of the Virtual Earth Map ControlPublish, Search, and Subscribe to GeoRSS GML


Google

Also a “big player” with products like “Maps” and “Earth”

Adaptors available .. but native support, eh?


Commercial Support

● ESRI● Ning● CadCorp● Platial● Tagzania


Aggregation!

placedb.org/fofredux.sourcefourge.net/exploreourpla.net/mylocalguru.com/blockrocker.com/jeffpalm.com/geo/

mapufacture.com/


mapufacture


little weather map


mapufacture.com/georss/map/show/60


geographic feed search


GeoRSS export


</hype>


Loads of potential, but stubsWhat can these do?How will practices be collected?

Folksonomic Properties


<item> <title>Sample Image</title> <media:content src="http://sample.com/map.jpg" type="image/jpg" /> <georss:box>

30 110 45 115 </georss:box> <georss:relationshiptag>image-extent</georss:relationshiptag>

</item>

Image Overlays


Confusion of Multiple Flavors, Namespaces

W3C vs Simple vs GML

Geo “RSS”

What's the Point, GeoRSS?


How does it stay open as interest gains and implementations multiply?

How do we govern overselves when we're completely open?

How does a “community standard” stayed controlled within closed standards bodies?

- Microformats model?

An Open Standards Process


OGC White Paper & Lightweight InitiativeW3C Incubator Group

How do open standards work in membership based standards groups?


- Sensors ObsRSS- Transport Data

Can a GeoRSS-like process be applied to other heavy weight standards?


Is a Microformat serialization of GeoRSS appropriate?What is the content? hAtom is sillyHuman Readable?Reusing HTML?

Speaking of Microformats


Is there an obvious, simple, unrestricted way to open up to place names

Addresses?

Or do we resolve to another namespaceWorking under the same model?

<georss:featurename>

Toponyms


With huge spreads of GeoRSS being published (flickr, weather, for example)

what's the best way to aggregate

how to aggregate a search?

A9 OpenSearch?

Aggregation ...


bbox is enough?WFS Basic

Can we devise a standard way to query for GeoRSS?


xslt/sparql hard to process space seperated lists(unlike w3c geo)

but are these really seperate properties?Problems with commas led to GML space separated

Some processing problems


A lightweight Catalog Spec

OpenSearch(?)

Discoverability


open to loads and loads of feeds (kiva, globalvoices)but inaccurate

RSS to GeoRSS converters


GDAL/OGRGPSBabel

Bottom of the stack support


All Tags or Attributes Ok?

- No more attributes


Why does it need to be an open standard?What's wrong with KML?

Google and KML


Thanks!

Mikel Maron [email protected]

http://brainoff.com/weblog/

worldKit / OpenStreetMap / GeoRSS

FOSS4G, September 15, 2006


GeoRSS

1.0http://georss.org/1/

Documents

Mikel Maron What's Next, GeoRSS FOSS4G 2006 What's Next, GeoRSS Mikel Maron [email protected][email protected] worldKit