add mean basestation distance error

floenavi/__init__.py

@@ -918,10 +918,26 @@ class FloeNaviGridSolver(object):
                 mmsi_permutations.append((entry, other_entry))
         return mmsi_permutations
 
+    @property
+    def basestation_distance_error(self):
+        """
+        Computes the average basestation distance error
+        -> Mean offset between expected and measured basestation distance for all solutions
+        :return:
+        """
+        mean_distance_error = np.ndarray(shape=(self.n_records, self.n_solutions))
+        for snum in np.arange(self.n_solutions):
+            mean_distance_error[:, snum] = np.abs(getattr(self.solutions[snum], "bs_measured_distance_offset"))
+        return np.nanmean(mean_distance_error, axis=1)
+
     @property
     def n_solutions(self):
         return len(self.solutions)
 
+    @property
+    def n_records(self):
+        return self.solutions[0].n_records
+
 
 class FloeNaviGridSolution(object):
     """