zhangying

Results 4 comments of zhangying

TF error: [Lookup would require extrapolation into the future. Requested time 1509348922.367725000 but the latest data is at time 1509348882.233323000, when looking up transform from frame [velodyne] to frame [map]]

> I guess that's an error when you don't execute "set use_sim_time true" before starting the launch file. Thanks for your response,I have executed "set use_sim_time true" before start the...

TF error: [Lookup would require extrapolation into the future. Requested time 1509348922.367725000 but the latest data is at time 1509348882.233323000, when looking up transform from frame [velodyne] to frame [map]]

> Have you also started the bagfile with the clock setting, like "rosbag play --clock /home/your/path/*.bag"? Yes,I follow every step of reference

TF error: [Lookup would require extrapolation into the future. Requested time 1509348922.367725000 but the latest data is at time 1509348882.233323000, when looking up transform from frame [velodyne] to frame [map]]

![Screenshot from 2020-04-19 18-48-23](https://user-images.githubusercontent.com/26378175/79685865-6aeaaf00-826e-11ea-8f26-2f634a201eba.png) This is the map of point cloud after played the bag file.It's just a few laser scan have been used.Everything is OK after played bag file,but...

ps3joy.py problem to activate connection

I can't found ps3 via device search.I don't where the problem is?Who can help me?I'm very appreciate it.