[ROS Q&A] 048 - How to merge data from two different lasers

More ROS Learning Resources: https://goo.gl/DuTPtK
Q: How to use ira_laser_tools package to merge laser data

A: the reason why you cannot see in the /scan_multi the obstacles of the back is because you are using the default configuration of the ira_laser_tool. By default, the ira_laser_toolpackage does not produce the /scan_multi from -PI to +PI, but some other weird values.

The solution, is to use the rqt_reconfigure tool to set the angle_min and angle_max parameters to -PI and +PI respectively. To do that, open the tool with the command:

rosrun rqt_reconfigure rqt_reconfigure
You should see something like in the picture attached. Then, just change the angle values. I recommend you change that while watching the scan in rviz so you will see clearly how the scan changes based on your values.

The original question can be found here: https://answers.ros.org/question/273572/how-to-use-ira_laser_tools-package-to-merge-laser-datas/#273809

---------Want to learn ROS really FAST and master the latest Robotics topics?-----------
::Visit Robot Ignite Academy, the online Academy that teaches you ROS really FAST, from beginner to master, using only a web browser: https://goo.gl/LBT7EN
Robot Ignite Academy is an integrated ROS learning platform which contains a series of online ROS tutorials tied to online simulations, giving you the tools and knowledge to understand and create any ROS based robotics development.

——————Are you a ROS expert and want to develop FAST your next ROS project?-----------

:: Then, use the ROS Development Studio (RDS) for your next project: https://goo.gl/EtFqmE
With the ROS Development Studio, you will be able to:
- Develop ROS programs for robots in a faster way, with an already setup IDE environment that includes autocomplete.
- Test the programs in real time on the provided simulated robots. Use the provided simulations or upload your own. Quickly see the results of your programming.
- Debug using graphical ROS tools.
- Test what you have developed on RDS in the real robot (if you have it :wink:
all of these are using ONLY a web browser without any installation and not limited by any operating system. DEVELOP FOR ROS USING WINDOWS, LINUX OR OSX.