On Sat, 26 Sep 2009 18:08:33 +1000 John Smith <deltafoxtrot...@gmail.com> wrote:
> 2009/9/26 Ross Scanlon <i...@4x4falcon.com>: > > > My thoughts at the time were that rivers would be good but I was dubious > > about the coastline as I had seen several where the ABS data just cut > > straight across the mouth of a bay. Whereas the PGS and/or landsat was > > more accurate. > > It's 50/50 sometimes PGS is more accurate sometimes the ABS is more > accurate, sometimes PGS is widely inaccurate, this is based on areas > with hi-res sat imagery. > > Also in technical terms coast line doesn't include rivers or the mouth > of them so ABS is technically correct. Where the ABS data looks to be > more accurate but lacks the river mouth I usually split the way across > any river mouths and join the PGS data to the ABS data. But you are at least looking at the sat as well. We should not just automatically change the coastline to the ABS data without at least looking at the sat imagery as well. -- Cheers Ross _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
