[OSM-talk] Coastline Update

[Paul Norman]

I have completed another coastline generation and it has uploaded. This
version respects odbl=clean.

The shapefiles are in their normal place at
http://pnorman.dev.openstreetmap.org/coastlines/

Included is a .osm file with all the error points.

An overview can be found at http://maps.paulnorman.ca/coastlines2.png
Detailed views:
Great Lakes: http://maps.paulnorman.ca/coastlines-lakes2.png
Europe: http://maps.paulnorman.ca/coastlines-europe2.png
US West Coast: http://maps.paulnorman.ca/coastlines-west2.png
Australia: http://maps.paulnorman.ca/coastlines-au2.png

There are no significant multi-square flooded or dry areas. The following
areas have significant number of error points:

Pudget Sound in Washington State
The mouth of the Columbia river in Washington
The Eastern Australia coast


The points indicated by the maps and by processedc_p files are where
coastcheck encountered an error and had to guess where the coastline
continues. These should generally represent transitions between ODbL clean
and ODbL dirty sections of the coastline. Islands with no ODbL clean
sections will not generate any error points.

http://www.wightpaths.co.uk/coast/CT-only.php and
http://suncobalt.homeip.net:82/coastline.php are two visualizations of
errors but neither has yet updated to the new data.

I hope to complete one more run of the ODbL-clean coastlines before the
downtime.

During the downtime I will be running a set of ODbL-clean and conventional
coastlines (and a planet file).

If diffs are available during the rebuild process I will be generating them
then and reloading my database when the ODbL planet is published.

Technical details:
This new run takes into account odbl=clean. It may not correctly handle
1. Objects that are dirty via a changeset override
2. Objects that WTFE reported clean but are now dirty
3. Certain sequences of edits and tag additions that are not likely to occur
frequently with coastlines and which require access to a full history
database to evaluate

The data is from 7 AM PST and the ODbL status is slightly more recent.