Merge pull request #191 from UDST/no-choosers

fixed boundary case in supply and demand
UDST · Apr 12, 2017 · 286e610 · 286e610
2 parents 5736667 + 38f2635
commit 286e610
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/urbansim/models/dcm.py b/urbansim/models/dcm.py
@@ -1135,6 +1135,9 @@ def summed_probabilities(self, choosers, alternatives):
             Summed probabilities from each segment added together.
 
         """
+        if len(alternatives) == 0 or len(choosers) == 0:
+            return pd.Series()
+
         logger.debug(
             'start: calculate summed probabilities in LCM group {}'.format(
                 self.name))