[OSM-dev] Generating SRTM elevation tiles in xyz format

[Ian Dees]

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.whitelegg at 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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