Hi Jordi, > > I have a couple of questions and probably you have the correct answer > that I can't find. > > 1) > I'm retrieving city points using the SPARQL endpoint and I find that > there are various predicates for the geographic coordinates: geo:lat , > geo:long, geo:POINT, grs:point and geo:geometry
> For my convenience I used geo:geometry WKT format, but I realized that > not all the resources have this predicate (http://dbpedia.org/page/Oslo > does not have it while http://dbpedia.org/page/Barcelona) has it. > > It poses me the question, Which of those predicates is present in all > the resources? I guess the most uses are geo:lat, geo:long and geo:POINT. At least the first two predicates, because they come from the W3C Geo onto [1] and is one of the most used in GeoData [2]. WKT is a serialization as well as KML, GeoJSON , etc.. > 2) > This question comes from a problem that I have with some points in > DBpedia. For example Allueva (Spain). > > Are the coordinates extracted from Wikipedia geodata or from another > service? Because I see that the properties are properly parsed > dbpedia:latd, dbpedia:latm, dbpedia:latns etc but the geo:geometry has a > different value. Here, I could only point you to other initiatives/ services dealing with GeoData: linkedGeoData [3], GADM [4] and NUTS [5] with mappings to DBpedia I hope it helps.. Best, Ghislain [1] http://www.w3.org/2003/01/geo/wgs84_pos# [2] http://stats.lod2.eu/vocabularies [3] http://linkedgeodata.org/Datasets [4] http://gadm.geovocab.org/ [5] http://nuts.geovocab.org/ -- Ghislain Atemezing EURECOM, Multimedia Communications Department 2229, route des Crêtes, 06560 Sophia Antipolis, France. e-mail: [email protected] & [email protected] Tel: +33 (0)4 - 9300 8178 Fax: +33 (0)4 - 9000 8200 Web: http://www.eurecom.fr/~atemezin ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
