[postgis-users] Making links

[Gustavo Ces]

Hi,

    Points are all over the net ( the linestrings) because they were 
extracted from them. The problem is just to classify the linestring points 
in two groups ( stations and not-stations) and then split the net into 
smallest lines with stations as start and end points ( because i need the 
not-stations data too).
    So there is two problems :
1- classify nodes in two groups
2. split linestrings in smallest links using another point table.

I started with python and org, so i´m searching a solution with funcions 
diferent to ogr's ones. In other words, is there any PostGis funcions to 
make this split-action? But, algorithmic solutions will be welcomed, too :)

Gus