Re: [OSM-talk] RFC: Import of OpenGeoDB to OSM
On 12 Jan 2008, at 19:23, Frederik Ramm wrote: responds to a question by Joerg Ostertag (who would have thought of that!) ?? have fun, SteveC | [EMAIL PROTECTED] | http://www.asklater.com/steve/ ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
Re: [OSM-talk] RFC: Import of OpenGeoDB to OSM
On Jan 13, 2008 8:31 AM, Martin Trautmann [EMAIL PROTECTED] wrote: When you import everything, you will have lots of duplicate places. What would be instructive is: - Convert the source to OSM and - Use osmxapi to extract what's already there Load both into JOSM and see exactly how much is duplicated... Done right you can even remove the duplication *before* it enters the DB, which a Good Thing (tm). Have a nice day, -- Martijn van Oosterhout [EMAIL PROTECTED] http://svana.org/kleptog/ ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
Re: [OSM-talk] RFC: Import of OpenGeoDB to OSM
Hi, I was going to ask the same thing... googling pops up a german wikipedia link... Frederik mind helping? The matter had been discussed on talk-de; they call themselves a free database and have their data listed as Public Domain on Sourceforge so at least from their point of view incorporation into OSM should not pose a problem. (They used to be LGPL but removed that around 2006.) As to where their data comes from - we don't really know but the bulk of the data has been around since 2003 and that's definitely pre-Google Maps. The main author, Thomas Mack, claims to have compiled the bulk from various free sources which he explicitly checked for PD-ability, and says he sometimes used commercial maps to cross-check individual data items but never copied from them. So I'd say the data is clean, or at least clean enough ;-) Readers of German might want to check this posting by Thomas Mack in which he responds to a question by Joerg Ostertag (who would have thought of that!) and says something about the sources: http://lists.phpbar.de/pipermail/opengeodb/2006-September/003552.html Bye Frederik -- Frederik Ramm ## eMail [EMAIL PROTECTED] ## N49°00.09' E008°23.33' ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
Re: [OSM-talk] RFC: Import of OpenGeoDB to OSM
Frederik Ramm wrote: As to where their data comes from - we don't really know Most of it was based on NIMA data, with 1/10 minute precision Much data has been added since. I don't know how this data should be added best. When you import everything, you will have lots of duplicate places. My recommended approach and current work is to add the best reference, which is the location id of the currend way or node. Take e.g. the road I live in: http://www.openstreetmap.org/?lat=48.0255lon=7.8644zoom=12 It's within Freiburg, Baden-Württemberg, Germany The town district is named Zähringen (about 1000 years old). Its loc id in opengeodb is 81730: http://fa-technik.adfc.de/code/opengeodb.pl?locid=81730;c=D There's not much info about this district, thus it may share its data with its parent Freiburg through its part of relation: http://fa-technik.adfc.de/code/opengeodb.pl?locid=16633;c=D base data is e.g. its abbreviation (car plates), inhabitants, postal code, telephone prefix, area,while there may be added extra data such as height, different names in other languages etc. Svens approach is to move most of the data to OSM. Personally, I'd prefer to take only a subset for reference, while most of the roads should have a loc_id tag about the district where they belong to. - Martin ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
