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charset=utf-8 > Am 17.07.2021 um 12:20 schrieb Henning Hraban Ramm : >=20 >>=20 >> Am 17.07.2021 um 11:53 schrieb Bruce Horrocks : >>=20 >>=20 >>=20 >>> On 16 Jul 2021, at 20:55, Hans Hagen wrote: >>>=20 >>> On 7/15/2021 10:30 PM, Bruce Horrocks wrote: >>>> On 15 Jul 2021, at 18:58, Hans Hagen wrote: >>>>>=20 >>>>> 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? >>>> >>> 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 >>=20 >> Off the top of my head I'm not aware of any higher resolution sources = of global data - what scale were you thinking of? >=20 > Can you work with OpenStreetMap data? >=20 > https://planet.openstreetmap.org > http://download.geofabrik.de > https://download.bbbike.org/osm/ >=20 > I didn=E2=80=99t find excerpts that only have e.g. country borders or = rivers. But with usual XML tools you could extract those. There=E2=80=99s https://osm-boundaries.com, but it doesn=E2=80=99t = really work (for me). You should also be able to select elements via Overpass API, but it = doesn=E2=80=99t 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=3Dosm20210531&osmIds=3D-232= 3309,-1216720&format=3DGeoJSON&srid=3D4326&simplify=3D1" You also need an API key that depends on your OSM account. Result = attached. 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