[postgis-users] match line with road segment

[searchelite]

Luigi Castro Cardeles wrote:
> 
> hi,
> 
> just a suggestion: you should try a check to identify the line segment
> that
> don't lies in the road.
> 
> ST_PointN(geometry,integer) you can iterate and create the line segments.
> then you can run a ST_Contains to check if your road segment matches route
> segment.
> you should save the information of the line segment after and before the
> ST_Contains fails.
> with that information you can find the vertice and them interpolate to
> create him.
> 
> best regards,
> 
> Luigi Castro Cardeles
> 
> 

thanks for the suggestion, but there is a problem...I'm using ST_makeline to
create the route so it only return 1 linestring. When i check with
ST_contains(road_segment, route) it returns f values for all the record 

thanks
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