initialize grid map instance

Author: ShisatoYano

src/components/mapping/binary/binary_map.py

@@ -25,7 +25,8 @@ def __init__(self, width_m=60.0, height_m=60.0, resolution_m=1.0,
         center_y_m: Center y position of map[m]
         """
 
-        pass
+        self.map = GridMap(width_m, height_m, resolution_m,
+                           center_x_m, center_y_m)
 
     def update_map(self, points_x_list, points_y_list):
         """