On Wed, Dec 31, 2008 at 11:00 AM, Peter Miller <[email protected]>wrote:
> > On 31 Dec 2008, at 18:20, Cartinus wrote: > > > On Wednesday 31 December 2008 18:40:18 Peter Miller wrote: > >> Dodgy circular ways > >> --------------------------- > >> > >> There are a number of islands off the Swedish coast that are showing > >> up as errors: > >> > http://tile.openstreetmap.nl/coastlines.html?zoom=16&lat=57.80195&lon=11.66 > >> 246&layers=B00 > >> > >> If one switches to a OSM view > >> ( > http://www.openstreetmap.org/?zoom=16&lat=57.80195&lon=11.66246&layers=B00 > >> ) one can edit them. Using 'h' I can see that they haven't been > >> touched for months, however if I click on them the tagging looks fine > >> and the way is shown as circular. > >> > >> Here is the history of one of them: > >> http://www.openstreetmap.org/browse/way/25610508/history > >> > >> Notice that the way appears to be a triangle, but that the way has > >> four points on it. > >> > >> If it does have an extra segment in the way then why does it show up > >> as a circular way in Potlatch? The simples thing will probably be to > >> delete them and recreate them but I though it was worth pointing it > >> out first. > > > > With any circular way the first and the last nodes are the same. So > > to define > > a triangle you get four nodes in the xml. > > Makes sense! > > > > > > > Those Swedish islands show up as errors because they are too small. > > Anything > > with a diameter of less than approximately 10 meter shows up as an > > error. > > > > However the checker explanation doesn't say that ( > http://wiki.openstreetmap.org/index.php/Coastline_error_checker > ) > > What should one do... > > 1) Delete all features smaller than 10 meters > 2) Keep them in a have loads of people go an investigate false problems > 3) Make them bigger so the islands as accepted by the coastline checker > 4) Adapt the coastline checker to that is accepts smaller islands. > 5) Add a tag to tell the coastline checker to ignore this feature > because it really is a small island. > > I vote for 4), everything else is a cop-out (1 and 3) or will waste > lots of people time (2) or be confusing (5). > > By the way, who maintains the coastline checker and how does one talk > to the people who maintain the code? Shouldn't there be information > for all tools about how to report problems, how to request features > and details of maintaining them? > > > Thanks, > > > Peter > What about 6) Convert tiny islands to a node tagged as a rock or navigation hazard. Karl
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