Nyall Dawson e110ba7d54 [FEATURE] Add linear referencing functions to expression engine ...

Adds new functions
- line_interpolate_point: interpolates a point by a given distance
along a linestring geometry
- line_locate_point: returns the distance along a linestring to
the closest position on the linestring to a given point

2016-08-21 20:59:57 +10:00

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[FEATURE] Add linear referencing functions to expression engine

2016-08-21 20:59:57 +10:00