On 10/8/07, Rick Collins <[EMAIL PROTECTED]> wrote: > I agree that most collected points are good enough. In fact, I > assumed that this project would harness the power of the many > computers available on the Internet and use an algorithm that would > accept multiple measurements of the same roads and maintain an > average or possibly just toss out stray points. I rather imagined > that it would be a database of a huge amount of collected data with > minimal human input. Then computing capability would provide an > automatically culled, much smaller data set for users and routing > software to make use of.
It's a common way of thinking about things, and there's been many projects tried doing this in the past, and none of them got particularly far. The way that we are doing things - treating GPS logs and various imagery as mere backgrounds to be manually traced over - has proven to be stunningly more successful than throwing raw GPS data and raw computing power together and hoping for the best. Perhaps your assumptions about how you thought things were going to work made things seem more difficult than they really are. Cheers, Andy > Just how large is the current data set? Multiple terabytes? If not, > I don't see this project ever really stressing the rapidly increasing > storage capability of a small number of PCs. > > > >With Potlatch, you can upload a track to OSM, then automatically > >convert it to a way. Potlatch "simplifies" the way to remove surplus > >points while retaining the curves. You will, of course, still have to > >tidy it up a little yourself - splitting the way at the right points, > >making junctions with other ways, etc. - before saving to the database. > > As I said in my post, I don't use Flash Player since I am on dialup > and the videos it works with far exceed the capacity of my link. In > order to avoid web pages that gratuitously devour my small bandwidth, > I just don't have Flash Player installed at all. So I can't use > Potlatch. It just seems much more efficient to use a program that > initially processes the data offline. > > > >Details here: http://wiki.openstreetmap.org/index.php/Potlatch/ > >Primer#Working_with_GPS_tracks > > > >A quick Google suggests that a similar feature was experimentally > >available in JOSM at one point, but any more than that I don't know. > > Well, it's too bad it was not retained. To be honest, I am not very > fond of working with Java applets at all. They never seem to work > very well. I understand the advantage of being portable without > having to maintain multiple versions for multiple OS and CPUs. But > any time you try to design to a lowest common denominator, it does > not work well on any machine. Regardless, JOSM is workable, but it > doesn't do what I feel is needed for this effort. > > Does anyone know of a way to automatically convert a GPX file to the > format required by OSM? OSM seemed to allow me to upload GPX > files. If I can't use Potlatch, is there any use for them? > > > > _______________________________________________ > newbies mailing list > [email protected] > http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/newbies > _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/newbies
