Yup, the results from pgRouting look broken. You should repost to the
pgRouting list and describe how you set up your data. What tolerances
you used when you created the vertices_tmp table, etc. This is not
relevant to the mapserver list.
-Steve W
Valeria Muñoz wrote:
example
the query is optimal path between 887 y 852. :
SELECT rt.gid, AsText(rt.the_geom) AS wkt,
length(rt.the_geom) AS length, calle.gid
FROM calle,
(SELECT gid, the_geom
FROM dijkstra_sp_delta(
'calle',
887,
852,
3000)
) as rt
WHERE calle.gid=rt.gid;
result:
"gid";"wkt";"length";"gid"
4389;"MULTILINESTRING((-71.1951327440651
-30.5911350429583,-71.1957462426904 -30.5912128948402,-71.1957861853043
-30.591219747929,-71.1958400125164
-30.591211719682))";0.000713367403530106;4389
4603;"MULTILINESTRING((-71.1939954028678
-30.5921681162637,-71.1939834234752 -30.5922241673576,-71.1938231446269
-30.5925509466888))";0.000421286769021393;4603
4331;"MULTILINESTRING((-71.1950174992082
-30.5919506007811,-71.1950526139385
-30.5916919152203))";0.000261057969957178;4331
4608;"MULTILINESTRING((-71.1938231446269
-30.5925509466888,-71.1937648360013
-30.5926358138883))";0.00010296765211197;4608
RG
2009/2/3 Stephen Woodbridge <[email protected]
<mailto:[email protected]>>
This may be cause because you need to check the direction of the
line segments before you create a linestring to pass to the client.
If you route is something like
segment source target
1 1 3
2 4 3
3 7 4
etc
route (1,2,4,3,7,4) or 1,3,3,4) depending on how you assemble it is
not going to make sense.
Then segment 2 needs to be reversed so it goes from 3 to 4 and
segment 3 needs to be reverse also. so you get:
route (1,3,4,7).
Also this is not really a mapserver issues and you should probably
pust this to the pgRouting list. It would alos help if you showed
some of the intermediate results. When you show a image and the
route is broken, most of us can look at the image and say "Yup,
looks like the route is broken!" We do not see what data you got out
of pgRouting, we do not know how that got passed to mapserver or
OpenLayers, there are a lot of places that you can break things. We
don't even know how data flows through your system or who/what is
rendering the route part of the image.
-Steve
Valeria Muñoz wrote:
hi..
I am back again with my problem pgrouting.. I followed a little
tutorial works perfectly with the shapefile from the example,
but to use mine the result is not expected, generating lines are
not continuous, I think I missing some coordinates or something
to work with my shapefile.
attached image.
please help!!..
2009/1/19 Valeria Muñoz <[email protected]
<mailto:[email protected]> <mailto:[email protected]
<mailto:[email protected]>>>
Hi
I would like to implement the service "optimum path between 2
points," can someone help me to be able to implement it?. The
general idea is that a user picks a point A and point B and a
display on the map the best route to get from point A to B.
RG...
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