在启动hector mapping之前启动lidar

src/robot_navigation/launch/hector_mapping.launch

@@ -15,6 +15,7 @@
   <arg name="map_topic"  default="/hector_map" />
   <arg name="map_size"   default="512" />
 
+  <include file="$(find ydlidar)/launch/lidar.launch">
 
   <node pkg="hector_mapping" type="hector_mapping" name="stdr_hector_mapping" output="screen">
     <remap from="map"  to="$(arg map_topic)"  />