Added the output topic remapping to the input arguments.

launch/node.launch

@@ -7,6 +7,7 @@
   <arg name="output" default="screen"/>
   <arg name="launch_prefix" default=""/>
   <arg name="cloud_in" default="~pointcloud_in"/>
+  <arg name="cloud_out" default="~pointcloud_out"/>
 
   <group ns="$(arg ns)">
 
@@ -16,6 +17,7 @@
           output="$(arg output)"
           launch-prefix="$(arg launch_prefix)">
       <remap from="~input" to="$(arg cloud_in)"/>
+      <remap from="~output" to="$(arg cloud_out)"/>
       <rosparam file="$(arg config_file)" command="load"/>
     </node>
 

launch/nodelet.launch

@@ -8,6 +8,7 @@
   <arg name="output" default="screen"/>
   <arg name="launch_prefix" default=""/>
   <arg name="cloud_in" default="~pointcloud_in"/>
+  <arg name="cloud_out" default="~pointcloud_out"/>
 
   <group ns="$(arg ns)">
 
@@ -17,6 +18,7 @@
           args="load iri_average_point_cloud/AveragePointCloudAlgNodelet $(arg camera_nodelet_manager)"
           output="$(arg output)">
       <remap from="~input" to="$(arg cloud_in)"/>
+      <remap from="~output" to="$(arg cloud_out)"/>
       <rosparam file="$(arg config_file)" command="load"/>
     </node>