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Hello I am trying to visualize LaserScan under /lidar topic in RViz. LaserScan receives messages but RViz does not visualize LaserScan. I already checked this question but I guess my problem is not same with it.
rostopic echo
So I tested whole thing in another computer which works with Nvidia card. I did exact same setup, hector_mapping and lidar worked just fine. In short source of the problem was the graphic card. Thanks for everyone for comments :D. I will link this question to my other related questions. 
happy to see this fixed! So in essence, it was an incompatibilty caused by using the gazebo_ros_gpu_laser plugin with an incompatible graphics card...
Did you post this upstream to the developers? If so, it makes sense to link against the respective issue here ...
can anyone tell me how to extract numerical data (distance and angle) from the lidar
Asked: 2019-02-28 04:34:39 -0500
Seen: 1,716 times
Last updated: Mar 12 '19
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Please provide the output of
rosnode info /rviz...(tab complete it) as well as a picture of the configuration of yourrviz(especially the contents of the tabsfixed_frameand yourLaserScan). Or link to the respective*.rvizconfig you are using...I edited @mgruhler. Also I found out source of the problem in this question is this laser thing.
@metobom seems okay, so far.
Can you have a look at
rostopic echo /lidarand see if there is any data in there? also, what kind of lidar do you have?@mgruhler my lidar is RPLidar 360 and also I added rostopic echo to my question.
@metobom I don't see any output of
rostopic echo...@mgruhler my bad I re-edited.
In rviz, can you uncheck "Autocompute intensity Bounds" and then change the intensity min and max value to actually have Min intensity < Max intensity ? Also, (just to be sure) do you at least have obstacles closer than 5meters of your robot in your Gazebo world ?
The output of
rostopic echoyou've shown only contains NANs for the range values. If all the values in the laser_scan message are NAN then there is nothing for RVIZ to show so this would be normal.