Update domhmm.py

Apparently we run into problems with the order calculation (at least) if the resids are not sorted according to magnitude (e.g., ...20 20 20 15 15 15...).

Author: m-a-r-i-u-s

domhmm/analysis/domhmm.py

@@ -85,7 +85,7 @@ def calc_order_parameter(chain):
         """
 
         # Separate the coordinates according to their residue index
-        ridx = np.where(np.diff(chain.resids) > 0)[0] + 1
+        ridx = np.where( np.abs(np.diff(chain.resids)) > 0)[0] + 1
 
         pos = np.split(chain.positions, ridx)