Quick look (Nottingham, of course): - Polygons look OK - Many features missing (e.g., University of Nottingham Main Campus, both sites of Dunkirk Primary School - Old features present (e.g., Elms Primary School, closed prior to 2011) - Reasonably well attributed.
At the very least it could be used to hunt for missing schools (which I've done a bit of in N Scotland using Food Hygiene data). Jerry On 24 November 2015 at 17:28, Christian Ledermann < [email protected]> wrote: > there is also the Layer Functional site from which things like School > grounds could be extracted. > As this layer does not have the issues as the buildings (school > grounds of different schools are not merged:) > an import may be more vluable. > > On 24 November 2015 at 16:53, Christian Ledermann > <[email protected]> wrote: > > can you send me (a link to) the tiffs, I'd like to have a look at them, > > maybe there is a way to auto extract and compare buildings from that data > > > > On 24 November 2015 at 13:19, SK53 <[email protected]> wrote: > >> I've finally (after 8 months) got around to looking at the OpenMap Local > >> buildings. I needed them for something else which caused me to download > the > >> SK data. I'll say more in a blog post, but for now here are two > comparisons > >> of OpenMap Local buildings with EA Lidar data (DSM-DTM & Z axis > >> accentuated): > >> > >> Central Newark (note parish church bottom left): > https://flic.kr/p/ARUvRv > >> Residential area to E of town centre (note terraces): > >> https://flic.kr/p/ARUvQP > >> > >> I've also put a few comparisons of Nottingham between OSM & OpenMap > >> buildings. > >> > >> Generally I'd say that the OpenMap Local buildings, although better than > >> VMD, still have some of the same problems, and particularly that very > >> similar buildings (such as the terraced houses) may be shown > differently, or > >> that discrete buildings are merged in unpredictable ways. It's also a > bit > >> disappointing that the main medieval building, the parish church is just > >> shown as a box. The Lidar data looks to have more promise as a base > line for > >> creating buildings. There may be scope to use the OpenMap Local > buildings on > >> a case-by-case basis where these clearly match the Lidar/Aerial > imagery, or > >> where the building shape is obviously simplified & can be improved > (parish > >> church again). I would advise not touching things like most of the > housing > >> and the merged buildings in the central retail areas. My experience with > >> working with such data is that splitting & refining such buildings is > often > >> a lot more work than drawing them from scratch. > >> > >> I have Geotiffs for the DTM, DSM, their difference & hillshaded > versions of > >> the DSM & difference. However I have failed to get these to load in > JOSM. If > >> someone else know the trick do let me know. > >> > >> Regards, > >> > >> Jerry > >> > >> > >> > >> > >> On 20 November 2015 at 13:03, Christian Ledermann > >> <[email protected]> wrote: > >>> > >>> Hi, > >>> > >>> Are there any mappers in and around Newark on Trent? > >>> > >>> I'd like to import the "OS Open Map - Local - SK" for newark and liked > >>> to have some other 'local eyes on it. > >>> > >>> > >>> > >>> -- > >>> Best Regards, > >>> > >>> Christian Ledermann > >>> > >>> Newark-on-Trent - UK > >>> Mobile : +44 7474997517 > >>> > >>> https://uk.linkedin.com/in/christianledermann > >>> https://github.com/cleder/ > >>> > >>> > >>> <*)))>{ > >>> > >>> If you save the living environment, the biodiversity that we have left, > >>> you will also automatically save the physical environment, too. But If > >>> you only save the physical environment, you will ultimately lose both. > >>> > >>> 1) Don’t drive species to extinction > >>> > >>> 2) Don’t destroy a habitat that species rely on. > >>> > >>> 3) Don’t change the climate in ways that will result in the above. > >>> > >>> }<(((*> > >>> > >>> _______________________________________________ > >>> Talk-GB mailing list > >>> [email protected] > >>> https://lists.openstreetmap.org/listinfo/talk-gb > >> > >> > > > > > > > > -- > > Best Regards, > > > > Christian Ledermann > > > > Newark-on-Trent - UK > > Mobile : +44 7474997517 > > > > https://uk.linkedin.com/in/christianledermann > > https://github.com/cleder/ > > > > > > <*)))>{ > > > > If you save the living environment, the biodiversity that we have left, > > you will also automatically save the physical environment, too. But If > > you only save the physical environment, you will ultimately lose both. > > > > 1) Don’t drive species to extinction > > > > 2) Don’t destroy a habitat that species rely on. > > > > 3) Don’t change the climate in ways that will result in the above. > > > > }<(((*> > > > > -- > Best Regards, > > Christian Ledermann > > Newark-on-Trent - UK > Mobile : +44 7474997517 > > https://uk.linkedin.com/in/christianledermann > https://github.com/cleder/ > > > <*)))>{ > > If you save the living environment, the biodiversity that we have left, > you will also automatically save the physical environment, too. But If > you only save the physical environment, you will ultimately lose both. > > 1) Don’t drive species to extinction > > 2) Don’t destroy a habitat that species rely on. > > 3) Don’t change the climate in ways that will result in the above. > > }<(((*> >
_______________________________________________ Talk-GB mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-gb
