2009/8/31 Nick Austin <[email protected]>: > On Mon, Aug 31, 2009 at 12:49 PM, Dave F.<[email protected]> wrote: >> Hi >> >> I noticed that one of the landscape features that appears to be most >> missing from the UK is the runs of electricity cables & pylons, which >> seems a shame seeing their height are useful for getting your bearings. >> I suppose the reason is that many are hard to get a location for. > > Most power lines can be traced from NPE (the out-of-copyright > background in Potlatch). > > Whenever I'm mapping and cycle under a power line I take waypoint and > an approximate compass bearing. That way I can check that the NPE > information is correct (and align it more precisely). If the line is > missing from NPE I use the compass information to draw short 'stubs' > (about 1/4 mile long) either side of the road or path. Once there are > enough stubs in the same area these can be joined together to form > long lines.
Indeed that works. It's also a fair assumption that there'll be a pylon anywhere the powerline line on NPE changes direction :) -- Matt Williams http://milliams.com _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
