documentation related to polyline precision 6

pelias / polylines

Pelias import pipeline for polyline (road network) data.

MIT License

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documentation related to polyline precision 6 #224

Closed missinglink closed 5 years ago

missinglink commented 5 years ago

There was inadequate documentation for our use of polyline precision 6. In many libraries the default precision value is 5, which is incompatible with our code.

see: https://www.mapzen.com/blog/polyline-precision/ for background info.

add convenience script to re-encode polylines generated at precision 5 to precision 6
add documentation to README

orangejulius commented 5 years ago

Awesome. The reencode script is nice to have