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I'm trying to get detailed geojson data for various African countries. I think I found a good source at http://download.geofabrik.de/. The problem is that the downloaded file is in osm format. I know of the osmtogeojson tool, but there is no way this would work on the 32.2GB (!) file I got from Geofabrik. I also have the pbf file which is 1.2 GB.

My question is:

  • Is it a way to split an OSM file (in my example, I could extract data country by country and hopefully feed them to osmtogeojson then)
  • Is it any other way to get detailed geojson info at the subnational level (provinces)?
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    well, what data exactly are you after? just the provinces? try Natural Earth. for osm sourced try overpass-turbo.eu or QuickOSM via QGIS. – bugmenot123 Mar 14 '16 at 12:53
  • What about Overpass API? – Jan Šimbera Mar 14 '16 at 12:54
  • Yes mainly country and provinces boundaries, as precise as possible - I'll have a look at overpass right now! – Martin Mar 14 '16 at 13:05
  • Thanks @bugmenot123 - Natural Earth had the info I was looking for in .shp format, which is easy to convert to GeoJson - easier than working with my big files. – Martin Mar 15 '16 at 9:58
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You can use osmosis or osmfilter to split your OSM source file for specific bounds or tags.

Geofabrik uses osmosis to cut their extracts out of the planet OSM, while osmfilter is quicker if you have certain tags to search for.

You can translate the osm data to other GIS formats using ogr2ogr.

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