hi, still have to look at it because my ubuntu / firefox doesn't run the media but...
i try to identify unmapped and sparsely mapped places in osm (Germany for now). the results can be seen here http://wiki.openstreetmap.org/wiki/Unkartografiert (page is German but result files are English) there is also a visualization in a slippy map here http://www.gary68.de/osm/qa/unmapped/index.php (turn on layers with the plus and zoom into Germany) i am running several reports on behalf of osm quality assurance but this is the most requested data according to the log files of my provider. cheers gary68 Gerhard Am Samstag, den 06.12.2008, 10:29 +0000 schrieb Steve Chilton: > I have taken Bernard's original visual comparison (location data) and Alex's > scoring (numerical comparison) and produced a map to visualise the results of > the comparison. > The result can be seen at: > http://maker.geocommons.com/maps/1784 > I have tried to remove any capitals that were mis-placed or incorrect, and > obviously am using Alex's somewhat subjective metric. > The size of the circles are proportional to the values for both, so small is > poor coverage and large good. The overlap of the circles shows who appears to > be doing better (orangey/brown showing means that osm is doing better, blue > google). > The geo-located data table is available from the link on the site. > Thanks to the Geocommons Maker! service this was quite easy to achieve, > although I would have like to be able to show results on a combined scale > from +5 (for osm 5, google 0) to -5 (osm 0, google +5), with 0 for equal, but > couldn't find a way of using a bi-polar colour scale for point data in the > software (having calculated a new column in the spreadsheet). > > Cheers > STEVE > > -----Original Message----- > From: [EMAIL PROTECTED] on behalf of Edward Johnson > Sent: Fri 12/5/2008 7:53 PM > To: talk@openstreetmap.org > Cc: Alex Mauer > Subject: Re: [OSM-talk] Google Maps - OSM comparison > > > > At CloudMade we have been doing a lot of research and comparison into > the quality and completeness of the map but more focussing on Europe and > the USA. So it is very interesting to see this and see just how far > ahead we seem to be in less developed areas. > > I would be very interested in looking through that spreadsheet Alex, > could you send it over to me. Perhaps I will go through the list myself > and do some rankings and we can compare results. > > Ed Johnson > > [EMAIL PROTECTED] wrote: > > > > Captials in Europe are done very well (Vaduz is an exception) > > > > > > In South America OSM is far behind Google > > > > > > In Afrika the winner is OSM > > > > > > In Asia it's mixed. > > > > > > > > > I ran through the whole list, ranking the quality of the map for each > of > > OSM and Google on a scale of 0-5. (0 meaning that the map is blank or > > only the name appears, 5 meaning that it doesn't seem like anything is > > missing from the map) Assuming I did a good job of ranking, OSM is > > slightly ahead of Google worldwide and in in Africa and Asia. In > > Europe, OSM is well ahead. Google is slightly ahead in Oceania, and > > well ahead in North and especially South America > > > > Here are the results (I can provide my rankings in a spreadsheet as > well > > if anyone is interested): > > OSM Google > > World 2.64 2.50 > > Africa 2.02 1.78 > > Asia 2.62 2.36 > > Europe 3.90 3.38 > > N Am 2.17 2.77 > > Oceania 2.19 2.35 > > S Am 2.36 3.21 > > > > -Alex Mauer "hawke > > > > > > > > > > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk > > > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
