git_ws/MPC/launch/MPC_2.launch

<launch>

  <group ns="turtlesim1">
     <node pkg="turtlesim" name="sim" type="turtlesim_node"/>
   </group>

  <group ns="turtlesim2">
    <node pkg="turtlesim" name="sim" type="turtlesim_node"/>
  </group>

  <node name="map_server" pkg="map_server" type="map_server" args="$(find rbx1_nav)/maps/blank_map.yaml"/>
  <node pkg="MPC" type="MPC2_node" name="MPC2_node" output="screen"/>
  <node name="rviz" pkg="rviz" type="rviz" args="-d $(find MPC)/launch/default.rviz" />

</launch>