Fix runtime bug in Radius of Gyration of Doryab Location.

src/features/location_doryab/location_base.py

@@ -345,6 +345,8 @@ def radius_of_gyration(locationData,sampling_frequency):
         rog = rog + (time_in_cluster * distance)
     
     time_all_clusters = valid_clusters.shape[0] * sampling_frequency
+    if time_all_clusters == 0:
+        return 0
     final_rog = (1/time_all_clusters) * rog
 
     return np.sqrt(final_rog)