[FWTools] Stop times extrapolation

[Karel Novotny]

Apologies if this is not an appropriate forum for this, but perhaps you
might have suggestions even if fwtools are not "the answer"...

I need to calculate stop times of bus lines (extrapolation)

I have:
1. Shape file with all stops
2. shape file with control points where bus time was taken
3. Shape file with all buss lines
4. csv file with times in start stops, final stops and control points
where time was taken.

Can fwtools help with this?

or,

Do you know about any other OS tool/forum I should be looking at?

Thanks!

Karel