Read orientation at run-time

We do not want to change the script to change orientation.

gt_segmented_cf.py

@@ -100,7 +100,7 @@ delta_ro_std = 5.2168
 delta_r_mean = -0.0094709 * 1000 #[m] 
 delta_r_std = 8.6953 * 1000
 
-orientation = 'anti' 
+orientation = input("Enter orientation (anti or cyclo): ") 
 
 ##########################
 # load the edgelist file #