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nilsnolde / docker-valhalla

This is our flexible Docker repository for the Valhalla routing engine
MIT License
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Custom elevation data #151

Closed caspg closed 7 months ago

caspg commented 7 months ago

Thanks for this great Dockerfile!

I would like to use elevation files (hgt files) that I download from other place. What would be best approach to this?

Run the image with build_elevation set to false, copy my files into custom_files/elevation_data and then run this image again with force_rebuild set to true?

I could open PR to add new container recipe.

nilsnolde commented 7 months ago

Hm, no idea, never tried that. I'd first copy the files to the relevant directory, then start the graph build with build_elevation: true. If those files are truly HGT format and their naming is the exact same as the tilezen tiles, then I guess it should just work.

caspg commented 7 months ago

Awesome. I will try it out and will open PR with recipe. I guess it's not very common use case but there are lot's of open LIDAR data (at least for Europe) which gives better accuracy. It probably is not that important for costing models, but for example, graphs plotted with results from /height will be more accurate.