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Determine the Closest road to a GPS point [duplicate]

Possible Duplicate: Calculate distance of point from an arc/polyline I have been trying to find the road to which a GPS point is closest to. I have a postGIS database which i loaded with ...
4
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4answers
2k views

Calculate distance of point from an arc/polyline

Using Postgres/PostGIS, I am trying to query the database for the closest arc to a particular GPS point. Each Arc is made up of two nodes that are GPS points on a map. Is there a way I could query ...