I'd encourage you to look further into the Mapzen Terrain Tiles: https://mapzen.com/documentation/terrain-tiles/
I ran the most recent update of Terrain Tiles almost immediately before we shut down, so they have fairly recent/modern data in them. Also, they're completely free: Amazon agreed to host them on S3 without any "requester pays" restrictions. You can read more about that here: https://registry.opendata.aws/terrain-tiles/. If you find those don't meet your needs, I'd be interested in hearing why. -Ian On Sat, Nov 3, 2018 at 7:31 AM Nick Whitelegg <nick.whitel...@solent.ac.uk> wrote: > Hi, > > > As part of a couple of projects I'm developing (a modernisation of Freemap > which hasn't seen much attention in recent years, and new work on my Hikar > AR project for walkers; https://gitlab.com/nickw1/Hikar) I'd like to > create SRTM elevation tiles in XYZ tile format. There are various mapping > providers which serve these (but subject to usage limits/cost) and > OpenMapTiles provide a download at cost, but to avoid these limitations I'd > like to roll my own. > > > Obviously I could develop code to convert the .hgt files to XYZ tiles in > Spherical Mercator, but it would be good to see if others have done the > same thing to avoid reinventing the wheel. > > > Looks like Mapzen might have done a bit of work on this ( > https://github.com/mapzen/terrarium) though this doesn't match exactly > what I'm looking for; could be used as a starting point. > > Alternatively, does anyone provide a free download of XYZ tiled elevation > data as static tiles a la Geofabrik? > > > Don't mind if it''s GeoJSON or some other format. > > > Thanks, > > Nick >
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