On Mon, 2020-07-20 at 11:29 +0100, Nick wrote: > Dear all > > I have been mapping a few properties using Bing maps with local > knowledge supplemented by some physical measuring (tape measure or > simply pacing). I now want to ramp up my mapping but the challenge > especially in rural areas is that sometimes the outline of a building > is > not clear - either obscured (e.g. trees) or unclear (e.g. decking or > car > ports). Also some aerial imagery is offset. Also, most of the > properties > are not along public roads. So my question is what are the preferred > methods for surveying that others are using?
I don't know about preferred, and it sounds as if you want something better, but is OS VectorMapLocal any use? It gives the impression of being machine-derived from imagery (probably not as well as "osmai" in JOSM), and needs significant tidying up using good imagery if you care to do it, but it generally gives a good indication of buildings' presence, at least. It definitely won't help with car ports etc. It would be interesting to know if it does show buildings that are obscured in imagery. I've used it in built-up areas, and I don't remember relevant cases; in one with trees that I remember checking, it wasn't recent enough anyway. I don't think VectorMapLocal is actually listed on the wiki, and it could do with some notes on using it. It's definitely made adding buildings in urban areas easier since I discovered it (from a reference on a web site using it, not OSM info!). Then UPRN and land registry data seem to be useful for splitting building outlines plausibly to aid address surveys. > I guess at the back of my mind is what do people perceive as the > purpose of mapping (hope I have not opened a can of worms). I see the purpose of adding buildings and then address information (especially postcodes) as allowing you to find them using the map for navigation. Your mileage may vary, so to speak. _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-gb
