[pgrouting-users] routing in linestring trouble

pgRouting pgrouting-users
1

Hi! I've got a problem using LINESTRING in my project.
In my map I've a principal road and some other roads starting perpendicular from this one.
For example:
Main road (0 0, 0 10)
r1(0 2 ,2 2)
r2(0 5, 20 5)
If I try to route from one point of a rod to another belonging to an other road, it doesn't work and I don't understand why.
Can anyone help me?
(thanks and sorry for my bad english)
_____________________

zEuSsE
e.mail: zeusxxl@virgilio.it

2

Andrea,

You have to use "noded" data. All linstrings must be broken at intersections, like:

BAD GOOD

A A
| |
|B----------D B----------D
| |
C C

A->C, B->D A->B, B->C, B->D

-Steve

On 2/19/2011 9:36 AM, Andrea Mazzeschi wrote:

Hi! I've got a problem using LINESTRING in my project.
In my map I've a principal road and some other roads starting perpendicular from this one.
For example:
Main road (0 0, 0 10)
r1(0 2 ,2 2)
r2(0 5, 20 5)
If I try to route from one point of a rod to another belonging to an other road, it doesn't work and I don't understand why.
Can anyone help me?
(thanks and sorry for my bad english)
_____________________

zEuSsE
e.mail: zeusxxl@virgilio.it

_______________________________________________
Pgrouting-users mailing list
Pgrouting-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/pgrouting-users

3

Ok thank you very much!
I've tried in this way, and it works!

Il giorno 19/feb/2011, alle ore 16.53, Stephen Woodbridge ha scritto:

Andrea,

You have to use "noded" data. All linstrings must be broken at intersections, like:

BAD GOOD

A A
| |
| |
|B----------D B----------D
| |
| |
C C

A->C, B->D A->B, B->C, B->D

-Steve

On 2/19/2011 9:36 AM, Andrea Mazzeschi wrote:

Hi! I've got a problem using LINESTRING in my project.
In my map I've a principal road and some other roads starting perpendicular from this one.
For example:
Main road (0 0, 0 10)
r1(0 2 ,2 2)
r2(0 5, 20 5)
If I try to route from one point of a rod to another belonging to an other road, it doesn't work and I don't understand why.
Can anyone help me?
(thanks and sorry for my bad english)
_____________________

zEuSsE
e.mail: zeusxxl@virgilio.it

_______________________________________________
Pgrouting-users mailing list
Pgrouting-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/pgrouting-users

_______________________________________________
Pgrouting-users mailing list
Pgrouting-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/pgrouting-users

_____________________

zEuSsE
e.mail: zeusxxl@virgilio.it