ST_LineFromEncodedPolyline — Crea un LineString desde una polilínea codificada.
geometry ST_LineFromEncodedPolyline(text polyline, integer precision=5);
Crea un LineString desde una cadena de polilínea codificada.
Optional precision specifies how many decimal places will be preserved in Encoded Polyline. Value should be the same on encoding and decoding, or coordinates will be incorrect.
Ver http://developers.google.com/maps/documentation/utilities/polylinealgorithm
Disponibilidad: 2.2.0
This example creates a LineString from a polyline.
SELECT ST_LineFromEncodedPolyline('_p~iF~ps|U_ulLnnqC_mqNvxq`@');
SRID=4326;LINESTRING(-120.2 38.5,-120.95 40.7,-126.453 43.252)
This example selects a different precision than the one used for polyline encoding.
SELECT ST_LineFromEncodedPolyline('_p~iF~ps|U_ulLnnqC_mqNvxq`@', 6);
SRID=4326;LINESTRING(-12.02 3.85,-12.095 4.07,-12.6453 4.3252)