Hi, I might be able to help (or confuse) :) By taking the converted gov'nt data shape files (as a ready OSM file) and slice it into 16 squares, then compare each square to the existing OSM data square, and only those squares that have no 'natural=water & similar tags' you would import the data. Then square it off again and import the 'no OSM Data areas'. So then your left with only a few small squares that need to be traced.
Does this make sence? Cheers, Sam Vekemans Across Canada Trails _______________________________________________ Talk-ca mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-ca

