fix error: 'numpy.ndarray' object has no attribute 'append' (AtsushiSakai#662)

* Update grid_map_lib.py

fix error: 'numpy.ndarray' object has no attribute 'append'

* Update test_grid_map_lib.py

* Update test_grid_map_lib.py

Co-authored-by: Atsushi Sakai <[email protected]>

Author: jsbyysheng

Mapping/grid_map_lib/grid_map_lib.py

@@ -120,8 +120,8 @@ def set_value_from_polygon(self, pol_x, pol_y, val, inside=True):
 
         # making ring polygon
         if (pol_x[0] != pol_x[-1]) or (pol_y[0] != pol_y[-1]):
-            pol_x.append(pol_x[0])
-            pol_y.append(pol_y[0])
+            np.append(pol_x, pol_x[0])
+            np.append(pol_y, pol_y[0])
 
         # setting value for all grid
         for x_ind in range(self.width):

tests/test_grid_map_lib.py

@@ -1,4 +1,5 @@
 from Mapping.grid_map_lib.grid_map_lib import GridMap
+import numpy as np
 
 
 def test_position_set():
@@ -19,6 +20,8 @@ def test_polygon_set():
     grid_map = GridMap(600, 290, 0.7, 60.0, 30.5)
 
     grid_map.set_value_from_polygon(ox, oy, 1.0, inside=False)
+    grid_map.set_value_from_polygon(np.array(ox), np.array(oy),
+                                    1.0, inside=False)
 
 
 if __name__ == '__main__':