greenhouse/pointcloud_to_laserscan/launch/sample_node.launch

<?xml version="1.0"?>

<launch>

    <arg name="camera" default="camera" />

    <!-- start sensor-->
    <include file="$(find openni2_launch)/launch/openni2.launch">
        <arg name="camera" default="$(arg camera)"/>
    </include>

    <!-- run pointcloud_to_laserscan node -->
    <node pkg="pointcloud_to_laserscan" type="pointcloud_to_laserscan_node" name="pointcloud_to_laserscan">

        <remap from="cloud_in" to="$(arg camera)/depth_registered/points_processed"/>
        <remap from="scan" to="$(arg camera)/scan"/>
        <rosparam>
            #target_frame: # Leave disabled to output scan in pointcloud frame
            transform_tolerance: 0.0
            min_height: 0.0
            max_height: 1.0

            angle_min: -1.5708 # -M_PI/2
            angle_max: 1.5708 # M_PI/2
            angle_increment: 0.087 # M_PI/360.0
            scan_time: 0.3333
            range_min: 0.45
            range_max: 4.0
            use_inf: true

            # Concurrency level, affects number of pointclouds queued for processing and number of threads used
            # 0 : Detect number of cores
            # 1 : Single threaded
            # 2->inf : Parallelism level
            concurrency_level: 0
        </rosparam>

    </node>

</launch>