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Point of intersection

原文 2013-02-12 19:26:55 7 1 sql/ postgis/ spatial

I am using postgis for my spatial database.

in my database I have a set of lines in one table and a set of points in another table. How Is it possible to determine which fits best as a point of intersection of two lines? What i am after is something related to the st_intersection function.

1 answers

PostGIS's ST_INTERSECTION will give you the geometry of the point of intersection between the two lines, and then a MIN(ST_DISTANCE([...], [...]) between this intersection and your points will give you the best fit.

http://www.postgis.org/docs/ST_Intersection.html

http://www.postgis.org/docs/ST_Distance.html

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Point of intersection

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solution1 0 2013-04-18 14:12:19

solution1
0 2013-04-18 14:12:19