pointsd= np.vstack([las.x,las.y,las.z]).T

colorsd= np.vstack([las.x,las.y,las.z]).T/65535

pcd_las_o3d.points = o3d.utility.Vector3dVector(pointsd)

pcd_las_o3d.colors = o3d.utility.Vector3dVector(colorsd)

o3d.visualization.draw_geometries([pcd_las_o3d])