[Tilesathome] oceantiles.dat fallback of server

[Ævar Arnfjörð Bjarmason]

On Thu, Oct 23, 2008 at 12:02 PM, spaetz <osm at sspaeth.de> wrote:
> As Dirk said, mixed tiles are sent as transparent now. As mixed tiles should never be shown as empty (they do contain coastline per definition), oceantiles.dat needs fixing there.
>
> I chose transparent to enable people to distinguish sea from mixed tiles in the oceantile.dat layer as elaborated in another mail.

Why am I seeing some tiles that look transparent (not sea colored) on
the t at h server now? Maybe some of them used to be marked as mixed but
now aren't and the oceantiles.dat on the server is out of date? But I
don't think so, one of these is pretty far out to sea and I'm fairly
certain it was never marked as mixed.

http://server.tah.openstreetmap.org/Browse/slippy/?zoom=12&lat=64.62968&lon=-14.23042&layers=BF

http://server.tah.openstreetmap.org/Browse/details/tile/12/1886/1075/
sh-3.2$ perl png2tileinfo.pl check 1886 1075
oceantiles_12.png(1886, 1075) = 2 (sea)

http://server.tah.openstreetmap.org/Browse/details/tile/12/1887/1078/
sh-3.2$ perl png2tileinfo.pl check 1887 1078
oceantiles_12.png(1887, 1078) = 2 (sea)