3 ms·
Funnily enough, that is one of the features it already supports (avoiding unlit streets). Another one is avoiding especially hilly routes.
by samcrawford 7y ago
Funnily enough, that is one of the features it already supports (avoiding unlit streets). Another one is avoiding especially hilly routes.
- asdf21 7y agoIs "hilly" a simple binary indicator on each street (or section of road) or is there an entire layer of elevation data included in the world data?
- samcrawford 7y agoIn my app, yes, it's a binary flag. But in the underlying data you can get detailed elevation data for every section of road worldwide that is readily usable in open source routing engines. GraphHopper supports STRM and CGIAR (two different data elevation data sources, available globally and free to use).
- pastage 7y agoSRTM is pretty bad, but good enough until height data is easier to work with.