Update on rosbag playback

README.md

@@ -50,17 +50,18 @@ Green: path, Red: map
 
 demo data(ROS1) by Tier IV  
 https://data.tier4.jp/rosbag_details/?id=212  
+To use ros1 rosbag , use [rosbags](https://pypi.org/project/rosbags/).  
 The Velodyne VLP-16 was used in this data.
 
 Before running, put `bin_tc-2017-10-15-ndmap.pcd` into your `map` directory and  
 edit the `map_path` parameter of `localization.yaml` in the `param` directory accordingly.
 ```
 rviz2 -d src/pcl_localization_ros2/rviz/localization.rviz
 ros2 launch pcl_localization_ros2 pcl_localization.launch.py
-ros2 bag play -s rosbag_v2 tc_2017-10-15-15-34-02_free_download.bag
+ros2 bag play tc_2017-10-15-15-34-02_free_download/
 ```
 
 <img src="./images/path.png" width="640px">
 
 Green: path, Red: map  
-(the 5x5 grids in size of 50m × 50m)
+(the 5x5 grids in size of 50m × 50m)