[mapserver-users] adjacent lines

[Stepan Kafka]

There is my approach which I used formerly for displaying the
dangling/pseudo nodes in ArcView:

- get the last/first point coordinate in the line
- use selectByPoint with small tolerance (if the layer is indexed, the
function would be speedy)
- exclude processed line from the result
- other shapes in the result set are adjacent lines

(For network analysis is good to preprocess these data to get faster
response.)

Stepan Kafka

> -----Pùvodní zpráva-----
> Od: owner-mapserver-users at lists.gis.umn.edu
> [mailto:owner-mapserver-users at lists.gis.umn.edu]za uživatele Vladimir
> Guzmán
> Odesláno: 5. dubna 2002 19:03
> Komu: mapserver-users
> Pøedmìt: [mapserver-users] adjacent lines
>
>
> Hello list.
>
> I'm trying to make a "two points path through a network" algorithm using
> php-mapscript.
>
> Is there a way in php mapscript to know the adjacent lines of a
> given line?
> Can mapscript recognize the shape's topology?
> Or it just can be done with postgis or Oracle spatial server?
>
> Thanks a lot,
>
> --
> Vladimir Guzmán R.
> -----------------
> www.main-task.com
>
>
>