[GRASSLIST:10868] Creating axis of a river

[Luca Casagrande]

Hi guys!
I got a 3d vector file made of 2 lines which describes the boundairs of a 
river... I need to create the mid-line between them.. (the axis of the 
river)..
Any ideas?

Ciao
Luca
-- 
"E' molto più bello sapere qualcosa di tutto, che tutto di una cosa (Blaise 
Pascal)."

GENTOO-GIS Development Team
jabber: casagrande at jabber.linux.it