Subscriber to /scan
This the error i'm getting for the code m writting below. I'm trying to write a subscriber to /scan and a callback function which prints the angle_min on the terminal (ranges[] later). However i guess...
View ArticleGmapping stops updating map
Hey, after finally getting deeper into ROS and understanding most of the things which are necessary for using the Gmapping-SLAM ( basics like tf, odom etc ) im now at the point of testing the whole...
View ArticleGetting costmap_2d to update with LaserScan data
I'd like to run costmap_2d and update a loaded static map with new sensor data, but I don't see any updates happening. I can see the latest LaserScan data in rviz on the /base_scan topic, but shouldn't...
View ArticleLimit linear velocity
Hi everyone, I wrote a node that subscribes to the topic sensor_msgs/LaserScan and publishes in the topic geometry_msgs/Twist. I want to limit the maximum linear velocity that a powered wheelchair can...
View ArticleConvert point cloud data into laserscan in ROS Indigo
What the way to convert point cloud data from Kinect sensor into laserscan in ROS Indigo? In Electric i'd made it via pointcloud_to_laserscan from turtlebot-robot stack. Thanks!
View ArticleLaserScan msg ranges.resize() - Arduino
Hello All, I am getting the following error when compiling my rosserial_arduino code for sampling and sending a LaserScan msg. This code works just fine in a standard ros c++ node. Does this member not...
View ArticleDepthimage_to_laserscan - choose which part of the image is scanned
Hi everyone! I am using the package depthimage_to_laserscan. In this package is possible to change the parameter scan height to 480 (the height of the kinect depth image). What I wanted to do is the...
View Articlepointcloud_to_laserscan
I need the package pointcloud_to_laserscan (I can not use depthimage_to_laserscan because I have to specify the min and max height of the points). I tried to catkinize the package but I couldn't. I...
View ArticleProblem Visualising LaserScan in rviz?
Hi all, Hoping someone can explain what what's missing here. I have 3 nodes: Openni2_camera, depthminage_to_laserscan and my own node which publishes all the tf transforms, sonar, odemetry, telemetry...
View ArticleCurrent map provided with laser scan
Hi, I am new in ROS and I want to do a SLAM using gmapping package with "laser scan" and "odometry data". In the first step I just want to see the current map provided with laser scan in fixed location...
View Articletf static_transform_publisher breaks laser
I am trying to use slam gmapping on a [robulab robot](http://www.robosoft.com/products/indoor-mobile-robots/robulab/robulab-10.html) with no success. One of the problems is that I have the laser topic...
View ArticleError about the rotoscan_node driver for the leuze laser scanner
I have installed this driver in this web http://wiki.ros.org/rotoscan_node But when I roslaunch rotoscan_node laserscanner_tcp.launch it output this error ERROR: cannot launch node of type...
View ArticleSubscriber not generating output!!
Hello, I am making a **simple subscriber which will subscribe to /lms200** topic on which **Laser Data is being published.** **I went through the ROS tutorial [Writing a Simple Publisher and Subscriber...
View ArticleDepthimage_to_laserscan scan height too large (at 1 pixel)
Im having an issue using Depthimage_to_laserscan. After I subscribe to the topic (uses lazy subscription), it throws an error: Could not convert depth image to laserscan: scan_height ( 1 pixels) is too...
View ArticleNavigation Slam gmapping multiple laserscans
Hello, i'm trying to create a map with two asus xtion on my turtlebot2. They are mounted back to back in the middle of the turtlebot. One to the front and one to the back. After bringing up the...
View ArticleHow to start Kinect Laser data in Turtlebot without gmapping
Hello We would like to make a program for Turtlebot to avoid obstacle using Kinect Laser data. We launched the minimal.launch file but the topic **/scan** is not published. When we launch the gmapping...
View Articlepointcloud_to_laserscan package not working in ROS indigo
The pointcloud_to_laserscan package is not working properly in ROS Indigo. The Indigo build is done recently and seems to contain some error. As required by the node I have published the pointcloud...
View ArticleUsing PointCloud2 data (getting x,y points) in Python
In a Python ROS node, I've subscribed to a sensor_msgs/LaserScan topic, converted them to sensor_msgs/PointCloud2 messages, and am trying to extract X, Y (and Z) point coordinates. The transformation...
View ArticleFrom c++ code to python code for a ROS program
Hello, I am not good in C++ (Not also good in Python, but better than in C++) I have a code in c++ which I would like to translate in Python but I don't have any idea of where to start (at least I...
View Articlepointcloud_to_laserscan using kinect
Hello, I am using indigo version and I have been trying to convert the depth image to laser scan following this tutorial http://www.hessmer.org/blog/2011/04/10/2d-slam-with-ros-and-kinect/ but I got...
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