[pgrouting-users] Help with Routing from Point to Point
agentsees at gmx.net
Sat Apr 17 06:15:07 EDT 2010
I posted this topic also on the forum and hope to get answers.
> I am searching for a solution to route from a Point on a line to another
> point on a line. I wonder why this hasnt been implemented yet in
> pgrouting, because i think its (one of the) most used feature! What i
> got till now is routing with different algorithms on Openstreetmap data
> from and to vertices and edges. I have sucessfully calculated the
> nearest points on the nearest edge to my start and endpoints. I tried to
> fill the missing last part with the tutorial from here :
> But i could not get it working. The function throws errors on the
> following SQL statement:
> It says, that st_intersects is neither false nor true on:
> SELECT INTO p ST_intersects(line,buffer($3,1));
> I think the problem is the creation of the linestring ('line') in the
> functioncode, because i can see errors which tell me that "||" is not an
> allowed operator.
> The linestring itself remains empty and maybe thats why the function fails.
> Has somebody an idea how to fix this?
> Is there no other / easier solution to route from one point to another?
> Thanks for answers in adavance!
> J. Weskamm
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> Pgrouting-users at lists.postlbs.org
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