Force ros diagnostic_updater to publish on other topics

Question

I am using the ros diagnostic_updater class (http://wiki.ros.org/diagnostic_updater) to publish diagnostic messages and found that it publishes to /diagnostics by default. Is there any way to force it to publish to another topic instead?

Answer 1

As with any ROS node you can make use of a the remap tag in a roslaunch file. For example this will remap the topic to /some_new_topic:

<launch>
  <node pkg="diagnostic_updater" type="diagnostic_updater" name="diagnostic_updater" output="screen">
    <remap from="diagnostics" to="/some_new_topic" />
  </node>
</launch>