Remapping IMU data in launch file
Hello there!
I am very new to ROS so forgive me if that's too easy question. I was trying to find some information on this forum and on ros wiki but couldn't find any.
I want to use hector_slam for my mapping project and right now I am experimenting with IMU data and hector_imu_attitude_to_tf . What I am trying to achieve now is to transform my IMU data to tf. My understanding is that in order to do that I need to publish my IMU data on imu_topic.
For experimenting with those ideas I downloaded some bag file with IMU data and created the following simple launch file:
<launch>
<node pkg="hector_imu_attitude_to_tf" type="imu_attitude_to_tf_node" name="imu_attitude_to_tf_node" output="screen"> <remap from="auk/fcu/imu" to="imu_topic"/> </node>
</launch>
/auk/fcu/imu is the IMU topic on which my bag file publishes. After launching the file rostopic list command lists imu_topic but unfortunately nothing is being published to that topic. The same is with /tf topic. After running roswtf I got the following message:
WARNING The following node subscriptions are unconnected: * /imu_attitude_to_tf_node: * /imu_topic
Should my /imu_topic point to the same data as /auk/fcu/imu ? I would be grateful for any tips about what I might be doing wrong.
I don't know if it's relevant but I am using ROS Hydro on Ubuntu 12.04.
