Meaning of some parameters in sensor_msgs/LaserScan
Hi, I am trying to use XV11 LiDAR device to generate the 2D map. I am using message sensor_msgs/LaserScan to send data. As you may know, each data packet sent from XV11 LiDAR carries 4 data. Each data...
View ArticleHelp publishing to cmd_vel and subscribing to LaserScan
Hey guys, I am trying to program a publisher for cmd_vel and a subscriber of base_scan (sensor_msgs/LaserScan, specifically the array ranges). For the first one I know I have to give a command like...
View Articlecostmap not cleared after executing all recovery behaviors
Hi everyone, i have a problem with clearing my costmap. First the robot is seeing an obstacle (for example a door, which will be closed infront of him) and then the robot is driving out of distance of...
View Articleshow fake laserscan messages rviz
I want through this [laser scan tutorial](http://wiki.ros.org/navigation/Tutorials/RobotSetup/Sensors) to send laser scan message in ROS. And I want to display the laser scan in Rviz. But it failed....
View ArticleCollect sensor data from LaserScan in rospy
Does anyone have any code examples of how to get access and collect sensor data from sensor_msgs/LaserScan in rospy? (not only subscribing but also collecting).
View ArticleCollect sensor data from LaserScan
I am using a robot in simulator with a laser sensor (sensor_msgs/LaserScan). I'd like to collect all sensor data that the robot scans, is there any way to do that in rospy?
View ArticleLaserscan data does not match the static map
I'm working on an Odroid XU4, have the navigation running and using the RPLIDAR A1 with its rplidar_ros package. I use a static map with the size of 100 x 125 pixel and a resolution of 0.05...
View Articlelaser scanner suitable for outdoor
hi I want to know where I can find all the laser scanner that is compatible with ROS? and it must be able to use in outdoor, and will not be effected by the sunlight. I hope any one can help me with...
View ArticleVisualization of a self-made LaserScanMsg in Rviz
Dear all, I have a problem when visualizing a LaserScanMsg that I defined on my own. What I basically did: I defined the LaserScanMsg as defined in the documentation and put the \sensor_origin in the...
View Articleno tf of map from hector_slam with only laserscan message
I want to visualization for my self-built lidarscanner in rviz. Right now display the **LaserScan** message in Rviz looks pretty good. Then I want to improve it with a slam demo. First I download a...
View ArticleTurtlebot simulator laser scan not working.
Hi everyone, I'm learning ROS and I'm trying to follow this tutorial link: http://wiki.ros.org/turtlebot_simulator/Tutorials/hydro/Explore%20the%20Gazebo%20world, when I put several objects in the...
View Articlelaserscan not showing up correctly in rviz
I an running ros on 2 raspberry pi's. one pi runs master, mapserver, gmapping or amcl and my motor control and sensor node. on the other I an running Rviz. I am in my motor control and sensor node I...
View ArticleObtaining nav_msgs/Odometry from a laser_scan (eg. with laser_scan_matcher)
Is it possible to obtain `nav_msgs/Odometry` message expressed in `base_link` basing on laser measurements with any existing package? I'd like to feed it to `base_local_planner` in the future, and...
View ArticleWhat does baud rate in SICK LMS do and how does it affect the frequency of...
In SICK LMS range finder, what does baud rate do and how does it affect sampling rate, frequency of messages being published on /scan topic? Let the detection angle be θ. Anglular resolution be α....
View ArticleTransforming PointCloud topic to LaserScan topic
Hello there, I have been trying to convert a PointCloud topic which is generated by gazebo_ros_openni_kinect into LaserScan topic. The gazebo plugin publishes a simulated openni output to...
View ArticleHow to turn laser scan to point cloud map
Hello, I'm fairly new to ROS and was wondering if there was a way to convert a ".bag" laser scan file into a point cloud map. I have successfully run the "laser.bag" scan file, provided by ROS, in...
View Articlehow to use tf2 for laser scanner
Hi, I want to convert 2d to 3d using urg 04lx laser scanner . My laser scanner being moved with motor . Firstly , I converted laserscan to pointcloud with python code . my code is below . Now ı have to...
View ArticleHow to use pointcloud_to_laserscan with an angled sensor
Hi, I'm using the `pointcloud_to_laserscan` package (also the `depthimage_to_laserscan` one) to get a fake laser scan from a point cloud. Everything is ok while the sensor is parallel to the ground....
View ArticleLaserscan to PointCloud
Hello folks I need to convert the Laserscanner data from my Hokuyo Laser Range Finder into a PointCloud. I know there is a package called laser_assembler which should do this. But i can't manage to...
View Articlei m new to c++ and ros and want to build my own mapping algorithm using laser...
i have recently started working on ros and just built one code that subscribes laserscan msgs and convert them to x y and z coordinate. Now i want to print the pointcloud in rviz and use it in scan...
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