> Am 17.07.2021 um 12:20 schrieb Henning Hraban Ramm <te...@fiee.net>: > >> >> Am 17.07.2021 um 11:53 schrieb Bruce Horrocks <n...@scorecrow.com>: >> >> >> >>> On 16 Jul 2021, at 20:55, Hans Hagen <j.ha...@xs4all.nl> wrote: >>> >>> On 7/15/2021 10:30 PM, Bruce Horrocks wrote: >>>> On 15 Jul 2021, at 18:58, Hans Hagen <j.ha...@xs4all.nl> wrote: >>>>> >>>>> I was wondering about that too. I admit that I looked into maps years ago >>>>> but never could find quality data files. >>>> Does this help? >>>> <https://www.naturalearthdata.com> >>> i was halfway writing as reader for that fiel format when i noticed that is >>> is also quite low res so i gave up on that and started playing (extending) >>> with an more interesting alternative that mojca and i wrote years ago at a >>> meeting >> >> Off the top of my head I'm not aware of any higher resolution sources of >> global data - what scale were you thinking of? > > Can you work with OpenStreetMap data? > > https://planet.openstreetmap.org > http://download.geofabrik.de > https://download.bbbike.org/osm/ > > I didn’t find excerpts that only have e.g. country borders or rivers. But > with usual XML tools you could extract those.
There’s https://osm-boundaries.com, but it doesn’t really work (for me). You should also be able to select elements via Overpass API, but it doesn’t work reliably for me at http://overpass-turbo.eu This is the query for mainland Netherlands: curl --remote-name --remote-header-name --location --max-redirs -1 "https://osm-boundaries.com/Download/Submit?db=osm20210531&osmIds=-2323309,-1216720&format=GeoJSON&srid=4326&simplify=1"; You also need an API key that depends on your OSM account. Result attached. Hraban
OSMB-dcc52d93616707aa0f6d582c82816ed1034354d6.geojson.gz
Description: GNU Zip compressed data
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