<launch> <arg name="map_file" default="$(find waypoint_nav)/maps/map.yaml"/> <arg name="waypoints_file" default="$(find waypoint_nav)/param/waypoints.yaml"/> <node name="waypoint_nav" pkg="waypoint_nav" type="waypoint_nav" output="screen"> <param name="filename" value="$(arg waypoints_file)"/> <param name="dist_err" value="0.8"/> </node> </launch>