dissociate return table to transfer old indice in new

Author: AntSimi

src/py_eddy_tracker/observations/groups.py

@@ -375,7 +375,7 @@ def particle_candidate_atlas(
         shape = (len(self), 2)
         i_target, pct = full(shape, -1, dtype="i4"), zeros(shape, dtype="i1")
         # Backward or forward
-        times = arange(t_start, t_end - dt) if dt > 0 else arange(t_start + dt, t_end)
+        times = arange(t_start, t_end - dt) if dt > 0 else arange(t_start - dt, t_end)
 
         if callback_coherence is None:
             callback_coherence = self.fill_coherence

src/py_eddy_tracker/observations/network.py

@@ -1214,6 +1214,7 @@ def dissociate_network(self):
         translate[:-1][i_sort] = arange(nb_obs)
         self.next_obs[:] = translate[n]
         self.previous_obs[:] = translate[p]
+        return translate
 
     def network_segment(self, id_network, id_segment):
         return self.extract_with_mask(self.segment_slice(id_network, id_segment))