peigong's profile - activity

When i want to publish msg like this:

Header header
  uint32 seq
  time stamp
  string frame_id
Point point
  float64 x
  float64 y
  float64 z

i can use the following cmd:

rostopic pub pt geometry_msgs/PointStamped '{stamp: now, frame_id: base_link}' '[1.0, 2.0, 3.0]'

or rostopic pub pt geometry_msgs/PointStamped '{stamp: now, frame_id: base_link}' '[1.0, 2.0, 3.0]'

what command should i use to publish msgs with array members like:

std_msgs/Header header
string[] joint_names
trajectory_msgs/MultiDOFJointTrajectoryPoint[] points 
       geometry_msgs/Transform[] transforms
       geometry_msgs/Twist[] velocities
       geometry_msgs/Twist[] accelerations
       duration time_from_start

I want to show trajectory of the quadcopter simulated in gazebo using Rviz.

I have learned that ‘hector_trajectory_server’ could be used to solve this problem, refer to this old Q&A.

Since i am totally new in this field, anyone could give me some guidance on how to use this node (or Tutorial on using this node)?

Any help will be appreciated. Thanks a lot.

Could you give me some guidance on how to use this node (or Tutorial on using this node)?@Stefan

using hector_trajectory_server to show trajectory in Rviz I want to show trajectory of the quadcopter simulated in gazeb

using hector_trajectory_server to show trajectory in Rviz I want to show trajectory of the quadcopter simulated in gazeb

Thank you for your kind reply. it works.

how to rostopic pub msg with array members When i want to publish msg like this: Header header uint32 seq time sta