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JointTrajectory ROS1 to ROS2 Porting issue

I have a ROS1 code which I am porting to ROS2. In the ROS1 code, "trajectory_msgs::JointTrajectory" is used whose ros2 equivalent is "trajectory_msgs::msg::JointTrajectory"(refer ...
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Which topic does Moveit2 send to robot simulation(rviz, gazebo) to accomplish desired motion execution?

I want to echo the topic responsible for sending Joint_trajectory to the simulation environment (rviz, gazebo). However, I can't read this data. I would like to use this data for sending to the ...
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How to visualize trajectory_msgs?

Hello! I write a package for a robot, that has servo-motors. How node (from my package) pulbishes JointState msgs, and i can see the visualization of my robot in rviz. I want to use a ssc32 servo-...
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JointTrajectory Python interface

Hi, I am trying to make my own environment that will be used for reinforcement learning training, with the help of gym-gazebo. I want to train a floating gripper to pick up an object from ground. The ...
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publish fails to send message

Hi! i'm writing a simple c++ code where i publish an message of type trajectory_msgs::JointTrajector. When i execute the code, everything works well except the moment of publishing the message. So ...
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Identifying valid fields in JointTrajectoryPoint message

When interpreting the JointTrajectoryPoint[] array provided by a JointTrajectory message, what mechanism is used to determine if optional fields (like velocities and accelerations) are valid and ...
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JointTrajectory time_from_start resets to all zeros after publish()

Ubuntu 12.04 ROS Hydro I am publishing a JointTrajectory to Gazebo and monitoring the topic using rostopic echo. The data that I publish is different from what gets captured by rostopic echo. Somehow ...
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Why does `rosnode info <node>` display [unknown type]?

For example - ...
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ompl_planning/GetMotionPlan returns non-valid trajectories

Hi All As per above, I am trying to call ompl_planning/GetMotionPlan service from the ompl_planning node for arm navigation. I'm not using a move_arm action but am calling the ompl_planning node ...
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using arm_navigation_msgs/GetMotionPlan: what setup/nodes are required to receive trajectories programatically

I've been following the ompl tutorials listed here and it all seems fairly straightforward except that it doesn't seem that having the ompl_planning node alone would be sufficient to generate the ...
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Generating many trajectories and trajectory filter without ShortCutter

Hello I am trying to generate diverse set of trajectories for doing a given task (e.g. moving an object from A to B). Currently I am generating such a set of trajectories by changing goal bias of RRT ...
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Saving Arm Trajectory and Replaying it

Hello How can I save PR2 arm trajectory and then replay the same trajectory at a later time? One way I can think of it is by writing trajectory_msg::JointTrajectory to a file and then reading the ...
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Understanding trajectory_msgs/JointTrajectory

Hi All In working with the JointTrajectory message, I'm a bit unsure as to how the data should be filled. If we have an arm with 7 joints, and a trajectory for those joints that has 100 points should ...
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