[OSM-talk] Coastline Update

Paul Norman penorman at mac.com
Wed Apr 4 17:17:17 BST 2012


Replication diffs have just resumed from a temporary location. I am not yet
certain if my server will be able to keep up with these diffs. If it is, I
will start another run at about midnight UTC.

I have a good half-dozen apps that consume minutely diffs and I need to
switch all of their locations

> -----Original Message-----
> From: ThomasB [mailto:toba0211 at yahoo.de]
> Sent: Wednesday, April 04, 2012 7:01 AM
> To: talk at openstreetmap.org
> Subject: Re: [OSM-talk] Coastline Update
> 
> Hi Paul,
> 
> do you plan another update?
> 
> Regards
> Thomas
> 
> 
> Paul Norman wrote
> >
> > 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.
> >
> >
> > _______________________________________________
> > talk mailing list
> > talk@
> > http://lists.openstreetmap.org/listinfo/talk
> >
> 
> 
> --
> View this message in context: http://gis.19327.n5.nabble.com/Coastline-
> Update-tp5608185p5617862.html
> Sent from the General Discussion mailing list archive at Nabble.com.
> 
> _______________________________________________
> talk mailing list
> talk at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/talk




More information about the talk mailing list