[OSM-talk] When will the next mapnik coastline update be?

[Jon Burgess]

On Sun, 2009-12-13 at 23:33 +1100, Steve Bennett wrote:
> On Sun, Dec 13, 2009 at 11:08 PM, Jon Burgess
> <jburgess777 at googlemail.com> wrote:
> > I ran the coastcheck utility last night to update the coastline
> > shapefiles on the main Mapnik layer.
> 
> Sweet, thanks.
> 
> > The updates will not automatically appear on the map unless the tiles is
> > re-rendered due to updates of other data. We have no mechanism to
> > recognise which tiles need to be rendered when the coastline is updated.
> > This is part of the reason why the updates are normally coincident with
> > the bulk reload where we mark all the old tiles as invalid.
> 
> What's the best way to force an individual tile to re-render? Edit
> something in the area and save?

If you grab the URL of a tile (right click, copy image location) and
apped /dirty on to the end then it will add the tile into the rendering
queue. 

e.g. http://c.tile.openstreetmap.org/16/59149/40219.png/dirty

if you append /status to the URL then you will see when it was last
rendered.

The tiles get rendered in a 8x8 grid, if any one get marked dirty then
they will all rendered. The /dirty only applies to that one zoom level.
If you want to effect other zooms then they need to be done separately.

The other way you can check the current data is to use the export tab.
The images are not cached and always render with the current shapefiles.

    Jon