Frederik Ramm wrote: >Sent: 28 March 2008 5:10 PM >To: Raphael Mack >Cc: talk@openstreetmap.org >Subject: Re: [OSM-talk] JOSM update / why does API return GPS points in >descending order? > >Hi, > >> mh, I guess this cannot be fixed in josm, since the the server returns >the >> stored gps points in arbitrary order. I would even suggest not to draw >any >> direction arrows for gps data from the server. > >But they can't be too arbitrary since drawing lines in between the >points would reveal a completely chaotic picture otherwise. I think >David Earl is right about sorting by timestamp since this is what's in >the API source:
And since its rare for two people to have the same time period for the same area by chance it generally works (just back to front). But of course that cant be guaranteed, especially if the area is large. Cheers Andy > >points = Tracepoint.find_by_area(min_lat, min_lon, max_lat, max_lon, >:offset => offset, :limit => TRACEPOINTS_PER_PAGE, :order => "timestamp >DESC" ) > >... and the "DESC" nicely explains the observation that all arrows are >in the wrong direction! I wonder why it is there. TomH? > >Bye >Frederik > >_______________________________________________ >talk mailing list >talk@openstreetmap.org >http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
