Top "Ros" questions

Difference between spin and rate.sleep in ROS

I am new to ROS and trying to understand this powerful tool. I am confused between the spin and rate.…

ros

Error installing ROS Kinetic on Ubuntu 16.04

When I try to do the following: sudo apt-get install ros-kinetic-desktop-full I get the following error: E: Unable to locate …

ubuntu ubuntu-16.04 ros

Unable to use cv_bridge with ROS Kinetic and Python3

I had a computer vision project on Ubuntu 14.04 with ROS indigo and python3, then I had to move on Ubuntu 16.04 …

python-3.x opencv cmake ros

Why this error when I try to create workspaces in ROS?

Whenever I try to create a workspace: ~/catkin_ws$ catkin_make It shows like this: ImportError: "from catkin_pkg.package …

python linux ubuntu ros

Writing a ros node with both a publisher and subscriber?

I am currently trying to make a ROS node in Python which has both a subscriber and a publisher. I've …

python ros

Flask video stream using OpenCV images

I am trying to use Flask to show a stream of OpenCV images. I am using ROS and the Zed …

python opencv flask stream ros

ROS RVIZ: How to visualize a point cloud that doesn't have a fixed frame transform

I was following the ROS official documentation on how to publish a point cloud and I was able to successfully …

c++ transform visualization ros point-clouds

ImportError: No module named 'rospy'

I installed the ROS package for Crazyflie, I wanted to run a simple script but when I type sudo python3 …

python python-3.x ros rospy crazyflie

ImportError: No module named catkin_pkg.packages

I am trying to run:- roslaunch turtlebot_gazebo turtlebot_world.launch but I am getting following error Traceback (most …

python ros

Using Eigen Library in ROS Indigo

I am working on a project in ROS Indigo that requires using the Eigen libraries. According to indigo/Migration page …

cmake eigen ros