Geospatial search gets more awareness?

Finally geospatial search gets more awareness from OGC (and vendors?)! There happened a by-inviation-only-meeting(!) called “OGC Geospatial Search Summit”, 15. September 2008 (http://www.ogcnetwork.net/node/396) as the highearthorbit blog reports.

Here are some interesting agreements from the blog:

1. Use simple, common formats as they already exist when appropriate, i.e OpenSearch as a base URI templating mechanism and follow GeoRSS-Simple specification for geographic data.
2. Use the Egenhofer topological operations ? terminology and definition, per Simple Features model (point, line, polygon)as a fundamental set of definitions.
3. In any geospatial query language, the minimum spatial parameter is BBOX, WGS84, with an implied spatial relation/operator ?intersects?. So, global search might be BBOX(-180,-90,180,90.
4. The next geospatial search type that should be defined is the Point with radius/distance and units=meters(default)
5. For specifying min/max, follow 19107 minx, miny, maxx, maxy pattern -90<lat<90, -180<long<180 (in decimal degrees).

Comment: Nice outcome as URI templating mechanism is very similar to geo-bookmarks!

Geo-Bookmark: Was ist das?

geometa Directory is a shared link service (register for free!) and it belongs to the project geometa.info. Saved links are also named bookmarks. Digital bookmarks have the special property of being parametrizable. This featured led mt to the idea of a geo-bookmark. In the SOGI-Informationsblatt 2-2007 (pdf, ca. 400 KB) now an article was published on the topic.

Das geometa Directory ist ein gemeinsames Linkverzeichnis (kostenlos anmelden!) und gehört zum Projekt geometa.info. Gespeicherte Links werden auch Lesezeichen genannt. Digitale Lesezeichen haben dank URLs die spezielle Eigenschaft, dass sie parametrisierbar sind. Das brachte mich auf die Idee des Geo-Bookmarks. Im SOGI-Informationsblatt 2-2007 (pdf, ca. 400 KB) ist ein Artikel dazu erschienen.