[OSM-talk] Flooded tiles - RE: Västerås, Sweden

[Jon Burgess]

On 22/10/2007, Steve Chilton <S.L.Chilton at mdx.ac.uk> wrote:
> What is the process for dealing with these flooded tiles in the mapnik layer?
> I would like to be able tidy up a whole bunch of occurrences in New Zealand, where I have been doing some mapping recently.
>
> http://www.openstreetmap.org/?lat=-41.10355285816537&lon=174.96737973557228&zoom=10&layers=B0F
>
> http://www.openstreetmap.org/?lat=-36.89102675458218&lon=174.83966369878166&zoom=10&layers=B0F
>

I think I already fixed those up when I did the Swedish updates. I
went around the map and fixed all the ones which looked obviously
incorrect. I fixed some around Russia, the US East coast and New
Zealand and the Shetland Isles.

The process is to take the shoreline_a.shp file and adapt the coverage
of sea/land squares using something like
http://www.vividsolutions.com/jump/. I then need a copy of these
shapefiles for the tile server. I should probably make the current
file available for download.

At some point we should be able to discard these shapefiles and rely
on the raw OSM natural=coastline data so I don't think we should spend
too much time making them completely accurate.

-- 
    Jon