obstacle_range measured from sensor_frame or from robot_base_frame?

[tonynajjar]

I spent some time debugging why I was getting no markings and found out obstacle_range is measured from robot_base_frame. Is this intentional? Given that it's a parameter defined under the source, I expected it to be measured from sensor_frame.

In any case, I think further documentation on that would be useful.

Bonus issue: also saw that the param sensor_frame was not documented in the examples

[tonynajjar]

My bad, due to some pcl filtering, my pointloud was being published with frame_id base_link