Ed Avis wrote: > In some parts of the country there are waterways traced from out-of- > copyright OS maps or from Street View tiles. Getting the shapes from > OS VectorMap will certainly be an improvement on that.
Absolutely. Some of the tracing from NPE appears to have been done either from the really old roughly-rectified imagery (which was never meant for tracing, only for postcode placement at npemap.org.uk), and most of it was done without aligning the imagery to ground-truthed features... both of which are pretty big no-nos for accurate tracing from historic sources. It's good to have the data in there, but if we can improve on it, we should, and VMD offers a chance to do that. cheers Richard -- View this message in context: http://gis.638310.n2.nabble.com/OS-VectorMap-water-feature-import-tp7083454p7089618.html Sent from the Great Britain mailing list archive at Nabble.com. _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
