diff --git a/hub/city_model_structure/building.py b/hub/city_model_structure/building.py
index e2a30906..d5129142 100644
--- a/hub/city_model_structure/building.py
+++ b/hub/city_model_structure/building.py
@@ -441,26 +441,3 @@ class Building(CityObject):
       for usage in internal_zone.usages:
         _usage = f'{_usage}{usage.name}_{usage.percentage} '
     return _usage.rstrip()
-
-  def identify_shared_walls(self):
-    """
-    Identifies which building' walls adjoin the neighbouring building and saves that information in the
-    corresponding surfaces
-    """
-    x = int((self.upper_corner[0] - self.lower_corner[0]) / 2)
-    y = int((self.upper_corner[1] - self.lower_corner[1]) / 2)
-    city_map = [['' for _ in range(y+1)] for _ in range(x+1)]
-    city_image = [[0 for _ in range(y+1)] for _ in range(x+1)]
-    for building_name in building_names:
-      building = city.city_object(building_name)
-      for ground in building.grounds:
-        length = len(ground.perimeter_polygon.coordinates) - 1
-        for i, coordinate in enumerate(ground.perimeter_polygon.coordinates):
-          j = i+1
-          if i == length:
-            j = 0
-          next_coordinate = ground.perimeter_polygon.coordinates[j]
-          point_1 = GeometryHelper.coordinate_to_map_point(coordinate, city)
-          point_2 = GeometryHelper.coordinate_to_map_point(next_coordinate, city)
-          for x in range(point_1.x, point_2.x):
-            y = GeometryHelper.point_between_point(point_1, point_2, x).y
diff --git a/hub/helpers/geometry_helper.py b/hub/helpers/geometry_helper.py
index d650eefd..e734e254 100644
--- a/hub/helpers/geometry_helper.py
+++ b/hub/helpers/geometry_helper.py
@@ -91,7 +91,7 @@ class GeometryHelper:
             j = 0
           next_coordinate = ground.perimeter_polygon.coordinates[j]
           line_dictionary = {"line": line, "coordinate_1": coordinate, "coordinate_2":next_coordinate, "points": 0}
-          print(line_dictionary)
+          print(building_name, line_dictionary['line'])
           point = GeometryHelper.coordinate_to_map_point(coordinate, city)
           distance = GeometryHelper.distance_between_points(coordinate, next_coordinate)
           if distance == 0:
@@ -101,7 +101,7 @@ class GeometryHelper:
           for k in range(0, int(distance)):
             x = MapPoint(point.x + (delta_x * k), point.y + (delta_y * k)).x
             y = MapPoint(point.x + (delta_x * k), point.y + (delta_y * k)).y
-            if city_map[x][y] == '':
+            if city_map[x][y] == {}:
               city_map[x][y] = building.name
               city_image[x, y] = (100, 0, 0)
             elif city_map[x][y] != building.name: