ROS Training : Module 4

What is Roslaunch used for in ROS?

• Visualization

• Communication

• Launching and managing ROS nodes

• Running Simulation

Which file type is commonly used for defining launch files in ROS

• .txt

• .yaml

• .launch

• .cpp

How do you execute a ROS launch file named "my_robot.launch" in the "amr_robot" package?

• rosrun my_robot.launch amr_robot

• roslaunch amr_robot my_robot.launch

• ros_launch run amr_robot my_robot

• ros launch amr_robot my_robot.launch

What does TF stand for in ROS?

• Time Frame

• Transform Frame

• Transition Frame

• The Fish

What is the function of <remap/> tag in roslaunch?

• allows you to change the names of topics or services for nodes

• allows you to include other launch files

• allows you to change the parameter in the nodes

• allows you to add nodes to the launch file

What information does a TF transform provide?

• Sensor readings

• Time stamps

• Position and orientation

• Node names

How can you visualize the TF frames and transformations in Rviz?

• Using 'rostopic echo /tf'

• Running 'rosrun tf view_tree'

• Adding TF display in Rviz

• Executing 'rosnode info /tf'

what is URDF stands for?

• Uniform Robot Description File

• Unified Robot Decoding File

• Universal Robot Description Format

• Unified Robot Description Format

What are the format used in URDF file?

• xml

• cpp

• py

• txt

What are the <param> tag used for in launch file?

• to setup parameters in launch file

• to include other launch files

• to add nodes to run on the launch file

• to rename the topics and service