On Mon, 9 Aug 2010, Frederik Ramm wrote: > I don't see any reason for an outcry other than this might make the > coastline less precise for a while. Chances are it is going to be fixed > very quickly in areas with Yahoo imagery, and might retain some of the > typical "blockiness" of the PGS import in wilderness areas.
If you knew what you were talking about I might be more patient. Yahoo imagery in high definition covers an extremely small proportion of Australia. Landsat imagery is better than Yahoo imagery in low definition, and it isn't much good either. check this http://www.maths.mq.edu.au/numeracy/tutorial/cts1.htm With PGS you get the least accurate coastline and we got the more accurate one from Geoscience Australia http://www.ga.gov.au/education/geoscience-basics/dimensions/coastline- lengths.jsp and then further work has gone into this from high resolution aerial photography. But the coastline is not the total of the imported data. Something like a quarter of the data for the entire continent has attribution markers on it (I didn't do the maths, and it may have been closer to one third) _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
