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pelias / polylines

Pelias import pipeline for polyline (road network) data.
MIT License
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how can I open file extract.0sv / .polylines??? #218

Closed stefanocudini closed 5 years ago

stefanocudini commented 5 years ago

I don't understand what kind of format this file is and how I can visualize it to make a test of the contained geometry

many tnks

missinglink commented 5 years ago

The polylines file format (also known as .0sv) consists of an encoded polyline string as per https://developers.google.com/maps/documentation/utilities/polylinealgorithm with the exception of using a precision of 6 instead of 5 shown in that example.

The encoded polyline is then followed by a null byte (\0) and then the street name as a UTF8 encoded string. Each line is delimited by a newline (\n).

You can use this demo to decode the polyline: http://valhalla.github.io/demos/polyline/ Note: you may need to remove the street name segment to get correct results using the demo