Re: [NTG-context] mp-geo Metapost package with ConTeXt

Am 17.07.2021 um 12:20 schrieb Henning Hraban Ramm :

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Am 17.07.2021 um 11:53 schrieb Bruce Horrocks :

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On 16 Jul 2021, at 20:55, Hans Hagen wrote:

On 7/15/2021 10:30 PM, Bruce Horrocks wrote:

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On 15 Jul 2021, at 18:58, Hans Hagen wrote:

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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