LaserScanAngularBoundsFilter not work

edit

Hi all,

I tried to bound the angle of LaserScan output from -1.57~+1.57 to -0.5~+0.5. But it just not work.. Here is my yaml.

    $ cat my_laser_config.yaml 
    scan_filter_chain:
    - name: angular_bounds
      type: LaserScanAngularBoundsFilter
      params:
        lower_angle: -0.5
        upper_angle: 0.5

The output topic "/scan_filtered" is still the same messages with input topic.. Any suggestion??

Kevin Kuei