Seems my earlier email was a timely reminder, We seem to be down to over 4,500 <http://taginfo.openstreetmap.org.uk/search?q=farm#values> now. I know I can't have done more than a couple of thousand of these.
We still have a very large number of place=farm, but I suspect these are much harder to resolve as many will be former farms which are now residential. Many, perhaps the bulk, of these have been added from OS OpenStreetView data. One last note: The history of the landuse=farm tag is probably a good example of how OSM tags get revised, changed and disappear through a gradual process involving evolution of mappers consensus. I think the realisation that landuse=farm was ambiguous for mappers came even before I joined OSM in late 2008. I remember Harry Wood creating the photo showing differences in tagging back in 2009 <https://wiki.openstreetmap.org/w/index.php?title=Tag:landuse%3Dfarm&oldid=319580>. Many mappers slowly moved over to landuse=farmyard & landuse=farmland, but obviously there were older objects which did not get retagged and some mappers will have continued the earlier usage. Only when it was clear that landuse=farm was a less widely used tag was the decision taken to remove rendering of the tag in the standard CartoCSS map, and it is this which is driving the current "NoFarm" project so as to minimise the appearance once that revision goes live. This may have been a relatively uncontentious change in tagging, but even so it shows that for any widely used set of tags achieving a revision in how they are used takes time. There is always a perception that doing things in OSM is a race against time, but I think in most cases this is erroneous, and particularly because OSM itself is not commercial. Most stuff added to OSM is immediately useful to someone even if data is incomplete or tagging is inconsistent. We should recognise that patience is a virtue in the resolution of the many outstanding tagging issues we have today (forest/wood, grassy places, residential roads in USA etc). That patience may be expressed by careful advocacy of different tagging approaches, small scale chiselling away at daunting quantities of confusingly tagged elements, revising rendering rules and so on. Patience is important because OSM is not a monolithic curated database, but rather a pool of data from 100,000s of different sources (mainly mappers but also imports) each with slightly different 'business logic'. Closing the loop requires that these sources be included rather than simply replacing values directly in OSM, which can only happen very late in the process as with landuse=farm. Jerry On 16 May 2017 at 13:30, SK53 <sk53....@gmail.com> wrote: > I just happened to notice on the Wiki (https://wiki.openstreetmap. > org/wiki/NoFarm_cleanup_efforts) that the UK is still rather high up the > laggards board for fixing landuse=farm to something more appropriate. Some > areas look good (East & West Mids), but there tend to be strong > concentrations of the older tag dotted around elsewhere. > > My experience is that roughly 5-10% of the polygons will be > landuse=farmyard, and the vast majority landuse=farmland. Watch for farm > buildings tagged with landuse though. > > Jerry >
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