| ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange |
Hi, I write a script to listen from a robot laser. I know which topic it is, but I cannot find the message name. So, I cannot use its attribute like ranges[]. Could u please tell me how to deal with it, I am a beginner to ros
I suppose you are working in python, so I suggest you to look at this tutorial.
You can see the message type of a topic using the command rostopic info /topic_name, in your case the message type should be sensor_msgs/LaserScan.
Hi, I already know my topic name, but I use my script to listen the robot. SO, I need the laserscan data. However, I have no idea how to extract the laser scan data. thx!
maybe I didn't understood the question, but is the message type what you need? As I said use the command `rostopic info /topic_name`, where /topic_name is the name of your laser topic (should be sensor_msgs/LaserScan) then in your code (look at the tutorial) use `from sensor_msgs.msg import LaserScan` to import what you need.
Thanks, actually I want to extract the laser scan data from the stageros robot. But I don't know how to do it? Again, thx
Asked: 2014-04-06 20:56:00 -0500
Seen: 174 times
Last updated: Apr 06 '14
ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
