Hi
I uploaded a new charge of history extracts, based on the 110919 full
history dump. They have been created from the latest
full-experimental-dump [1] using my history splitter [2], based on a
slightly modified version of Jochen Topfs really great osmium framework
[3]. They contain multiple versions of an object. If you just want the
map-data as it is currently, use the Geofabrik-Extracts [4].
The extracts can be downloaded from gwdg:
<http://ftp5.gwdg.de/pub/misc/openstreetmap/osm-full-history-extracts/110919/>
Their size ranges from very small (a village) via medium (Berlin) to
large (Germany). They only cover a very, very small part of the world
and are currently targeted at application developers that are looking
for data to test their history analysis apps. Most extracts are
delivered as .osh.pbf files, readable with all history-enabled pbf
parsers (eg. osmium).
Some extracts are also available in the .osh or .osh.bz2 format
(xml-basesd). Some common programs like JOSM can open them them when you
rename them to .osm, but the produced output is not very useful in most
cases.
In contrast to the last set of extracts, the new ones are now cuttet
using the softcut algorithm [6] using simple bounding-boxes [5].
Dumps created using that algorithm have the following characteristics:
- ways are complete (as they are in the api-database)
- ways are reference-complete (all referenced points are included)
- relations are complete (as they are in the api-database)
- relations are NOT reference-complete (relations may reference ways
or nodes that are not in the extract)
- relations referring to relations that come later in the file are
included
- all versions of an object of which one version touched the bbox are
included
As always, I first created a .pbf version of the full-planet file, which
I uploaded, too:
<http://ftp5.gwdg.de/pub/misc/openstreetmap/osm-full-history-extracts/full-planet-110919-1418.osh.pbf>
Peter
[1]
<http://planet.osm.org/full-experimental/full-planet-110919-1418.osm.bz2>
[2] <https://github.com/MaZderMind/osm-history-splitter>
[3] <https://github.com/MaZderMind/osmium/>
[4] <http://download.geofabrik.de/>
[5]
<http://ftp5.gwdg.de/pub/misc/openstreetmap/osm-full-history-extracts/bbox.config>
[6]
<https://github.com/MaZderMind/OpenStreetMap-History-API/blob/0.1/splitter/softcut.hpp>
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