On Wed, Oct 1, 2008 at 8:46 PM, Rob Reid <[EMAIL PROTECTED]> wrote: > Ævar Arnfjörð Bjarmason wrote the following on 02/10/2008 06:48: >> A bunch of tiles covering Iceland are inappropriately either blue or >> white squares on land or near the coast: >> >> http://openstreetmap.org/?lat=65.47&lon=-22.71&zoom=8&layers=0B00FTF >> >> This also happens inland: >> >> http://openstreetmap.org/?lat=65.396&lon=-14.227&zoom=9&layers=0B00FTF >> >> I can't see what the problem is, here's perhaps a better example where >> an area of the ocean is rendered as if it's a landmass but there's no >> island (or anything else but the ocean) in that area: >> >> http://openstreetmap.org/?lat=65.7839&lon=-23.8626&zoom=13&layers=0B00FTF >> >> What's the problem? >> > Osmarender uses a file called oceantiles_12.dat to establish if a tile > at zoom 12 is ocean or land because when it is rendering it only has the > data for that tile and so may not know where the nearest coastline is. > > Looking at your 3rd example the z12 tile in question is here : > http://server.tah.openstreetmap.org/Browse/details/tile/12/1776/1044/ > > Checking oceantiles for this tiles gives the following result showing it > marked as a land tile : > > ./png2tileinfo.pl check 1776 1044 > oceantiles_12.png(1776, 1044) = 1 (*land*) > > If you run tilesAtHome you should already have the png2tileinfo > directory which contain the tools for fixing this. > If not you can check it out with svn from here : > http://svn.openstreetmap.org/applications/rendering/png2tileinfo/ > And read the README for details on how to check/set tiles. > > To commit changes you will need an svn account. > > If that all seems a bit complicated let me know and I'll add Iceland to > the places I've been doing oceantiles fixes for.
That doesn't sound complicated and at all, and thanks for explaining what the problem is so that I can fix it :) Whom do I contact for a SVN account so that I can commit fixes for Iceland? _______________________________________________ Tilesathome mailing list [email protected] http://lists.openstreetmap.org/listinfo/tilesathome
