[pgrouting-users] Help with Routing from Point to Point
agentsees at gmx.net
Tue Apr 13 13:52:23 EDT 2010
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
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!
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