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/ _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk