[Imports] ADD import (Antarctica natural features and POIs)
Christoph Hormann
chris_hormann at gmx.de
Sun May 5 10:28:42 UTC 2013
Hello,
during preparation of the Antarctica coastline import [1] i had also
contacted the SCAR for possible use of the ADD [2] and got a positive
reply while we were doing the MOA import. I here want to introduce
this data source and discuss plans for import into OSM.
About the data:
The Antarctic Digital Database contains geographic data from various
sources assembled and maintained by the SCAR - the organization that
coordinates scientific activities in Antarctica under the Antarctic
Treaty.
Of interest for OSM are:
- coastlines and shelf ice extent, more detailed (especially many more
small islands) and more up-to-date (especially ice shelf changes) than
the previously imported MOA data
- data for the ice free areas (currently mostly unmapped in OSM)
- moraines, lakes and streams
- research stations and airfields (most of these are probably already in
OSM)
- historic sites
Some more information on the data can be found in my blog post [3].
The import:
the amount of data is quite large so it needs to be split into smaller
chunks for import - the tiling planned can be found on [4]. I set up a
conversion for the data and produced a few sample files that can be
downloaded and reviewed [5]. Once the conversion rules are finalized i
will convert all tiles and make them available for distributed import.
To discuss:
The rules for tagging i used can be found on [5] - this is what
seems appropriate to me - feel free to suggest changes. One thing i
was not sure about is how to best apply a natural=* tag to a small
island (a closed way already tagged natural=coastline). I see three
options:
1) duplicate the way
2) tag natural=coastline;whatever
3) create a multipolygon relation containing a single way with natural=*
I used option 3 but i could not find any definitive answer to this
question so i will leave it open for discussion.
Greetings,
Christoph
[1] http://wiki.openstreetmap.org/wiki/Antarctica/Import_2013
[2] http://www.add.scar.org/
[3] http://blog.imagico.de/more-antarctica-mapping/
[4] http://wiki.openstreetmap.org/wiki/Antarctic_Digital_Database
[5] http://wiki.openstreetmap.org/wiki/Antarctic_Digital_Database/Data
--
Christoph Hormann
http://www.imagico.de/
More information about the Imports
mailing list