[GRASS-dev] Network shortest path

Dear list,

i have already used v.net.path with sets of 2D segments.
Without ever using v.net, arc were naturally "noded" at matching segment
extremities; everything was fine.

I'd like to know how to deal with 4D segments (x, y, z, class).
The fourth dimension is stored in a 'class' attribute.

Is it possible to node only extremities having same x, y and class?

Thank you for any help.

Regards,

Adrien