On Tue, Dec 18, 2018 at 8:10 PM john whelan <jwhelan0...@gmail.com> wrote: > > After reading the link I'm unclear what the aim is. > > Modern DEM data I suspect is available to OSM under licence is there > something special about the historical data? It seems unclear if it is > licenced in such a way it could be used by OSM. > I don't really know what his aim is exactly other than to preserve this resource and probably make available as large seamless TMS layer. But I trust Grant knows what he is doing and why as he has done this before.
One use case a DEM does not address is place and feature names and locations, old topo maps have that information usually, DEM does not. I have used them extensively in the past with GNIS data points which are gridded to like 30" arcs or something like that, topo maps are not. The Perry-Castañeda Library Map Collection is one such example of a similar very valuable resource. https://legacy.lib.utexas.edu/maps/africa.html And again, if Grant is asking, I am supporting even if he wants to just make them his desktop wall paper. Cheers, Blake _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
