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Questions tagged [beginner-tutorials]

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Ros2 Iron, Tutorial Webots, Setting up a robot simulation (Basic) Connection Issue

Following the basic tutorial with the goal to use webots with ros2, I've run into the following problem: ...
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where is the beginner_tutorials.srv file in the add_two_ints tutorial?

I am learning ros noetic on the page (https://wiki.ros.org/rospy_tutorials/Tutorials/WritingServiceClient)In the scripts/add_two_ints_server.py file within the beginner_tutorials package, there is a ...
Yongxue Law's user avatar
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Windows - Issues Running turtle_tf2_py Package in ROS 2 Environment

I’ve encountered an issue while trying to run the launch_turtlesim_launch.py file in a ROS 2 environment. I received an error message stating: “package ‘turtle_tf2_py’ not found”. I attempted to ...
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package not found for ros tutorials

whenever I run the line $ sudo apt-get install ros-<distro>-ros-tutorials (i use melodic) it gives ...
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another "fatal error: ros/ros.h: No such file or directory"

Good evening Sorry for asking another "ros/ros.h: No such file or directory" question. Unfortunately, none of the following did work/is applicable: 2xFindPackage, InitWorkspace or ...
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1 answer
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[rosrun] Couldn't find executable

//www.ros.org/wiki/ROS/Tutorials/ExaminingPublisherSubscriber. When I try to run rosrun beginner_tutorials talker. It tells me that: [rosrun] Couldn't find executable named talker below /home/MY_NAME/...
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2 answers
15 views

docker container : Exited (1) on "bad" command

I am using ROS in a Docker container. I followed this tutorial. Now I am going through the other tutorials and working through them inside the container as "root". The problem : after ...
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2 answers
17 views

rosrun beginner_tutorials listener.py results in no output

HI All I'm using ubuntu 16/04 along with python for writing nodes. I just have few hours experience on ROS. I pushed rosrun beginner_tutorials listener.py after defining the source but this resulted ...
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1 answer
50 views

cmake error catkin package

I am following the tutorials in order and have been asked to configure the catkin environment at stage 5 of this web page: link text The error I am receiving is as follows (bold below): ...
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1 answer
2 views

simple Q about where to install packages

let's say I want to download ros-kinetic-ros-tutorials through sudo apt-get install ros-<distro>-ros-tutorials where do I need to be cd'd into at that time ...
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1 answer
3 views

Getting CMake Error: 217, when running catkin_make

Hi, I am going through beginner turotials for ROS indigo link to tutorial and I am getting this error message at point 5. Common step for msg and srv, when I run the catkin_make install or catkin_make ...
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1 answer
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rqt segmentation fault following tutorials

Hi everybody I just installed ROS Kinetic Kame on Ubuntu 16.04 following the tutorials. When I get to the 6th beginner tutorial (Understanding ROS Topics, http://wiki.ros.org/ROS/Tutorials/...
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Tutorial question 'Using rosmsg' error

Hello, I have been going through the tutorials for the first time, but got stuck on the 'Using rosmsg' section. The command is : rosmsg show beginner_tutorials/Num...
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Error at the beginner_tutorials package - build error (ROS tutorials)

Hello, I am a beginner at ROS and I was doing the following tutorial : http://wiki.ros.org/ROS/Tutorials/WritingPublisherSubscriber%28c%2B%2B%29 . I did exactly what the tutorial instructed me to do (...
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VM RVIZ inits but crashes shortly after start

Notes ROS Indigo / Ubuntu 14.04.5 via VirtualBox 5.0.14 / mbp OS X 10.11.3 RVIZ runs rgbdslam with no problems rosrun rgbdslam rgbdslam Initial Steps ...
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Not Working - Multiple Machines Tutorial

Tutorial: http://wiki.ros.org/ROS/Tutorials/MultipleMachines The following commands working on a local machine: rosrun rospy_tutorails talker ...
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I want to create a ROS package? how can i?

i want to create two nodes on ROS, and want them to communicate and analyze the robot's local and global reference frames. To be precise i want to examine the position of the robot in x, y and theta ...
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Occupancy grid mapping for beginner

Hi, I am a beginner in the field of localization and mapping for mobile robots and I am a little confused right now. What am I basically trying to do is to implement some occupancy grid mapping ...
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1 answer
24 views

„[rospack] Error: no such package beginner_tutorials“

Hi, I'm absolutely new to ROS (and quite new to LINUX). I installed ROS JADE on Ubuntu 14.04 and did the first three tutorials. In the Tutorial: „Creating a ROS Package“ I'm encountering an error. The ...
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1 answer
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following tutorial for publisher and subscriber : missing liblog4cxx.so

When trying to catkin_make the catkin_ws folder i get the following output: ...
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1 answer
3 views

ros tutorial file not found

I am currently doing the following ros tutorial on understanding nodes (http://wiki.ros.org/ROS/Tutorials/UnderstandingNodes) For this tutorial it is using a lightweight simulator ...
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1 answer
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problem in writing a simple service and client(python)

When I type rosrun beginner_tutorials add_two_ints_server.py it displays ...
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1 answer
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Weird rqt_graph when running turtlesim

I am going through the ROS tutorials and on the "Understanding Topics" tutorial in section 1.2.1 when I launch rqt_graph I get this image: It should be ...
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1 answer
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'Use the cfg File' tutorial last command unclear

Hi. Working through the tutorials in sequence. Following the last section 'Use the cfg File' on this page I edited CMakeLists.txt and added the following at line 13: ...
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1 answer
3 views

Tutorials: Writing Simple Server Client Bug?

Hello, so I'm doing the tutorials and I got a problem in this one. Where do you get this file? #include "beginner_tutorials/AddTwoInts.h"? I know that you have to go back look at creating ...
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1 answer
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How can I control the rqt_plot x-axis scale?

I'm using rqt_plot to plot movement of the turtle in turtlesim. Steps: ...
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1 answer
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Question about creating a package tutorial

I'm currently learning how to use ros right now and going through the tutorials and I'm on this one http://wiki.ros.org/ROS/Tutorials/CreatingPackage Everything works fine until I get to step 5.1 when ...
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Error: package 'parser' not found

Hi, I'm trying to follow http://wiki.ros.org/urdf/Tutorials/Parse%20a%20urdf%20file after having completed all of the introductory tutorials. I think I may not be following some of the shorthand in ...
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1 answer
11 views

How to make a python listener&talker on the same node?

Hi, I would like to make a listener/talker in python. I already looked at the tutorials. However, these examples implement two separated codes, a listener and a talker, and I would like to implement ...
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1 answer
10 views

simple robot integration with Gazebo to test all my robot code

I have built a simple chassis with left and right wheels with two separate motor controllers. The motor controllers are on a simple CAN communications bus. I've written an ROS service that sends the ...
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2 answers
22 views

import select ImportError: No module named select

Since yesterday I've been having a problem to use the next command: $ rospack depends1 rospy And any other command like this. I receive the next output: $ rospack depends1 rospy failed to load ...
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1 answer
13 views

Tutorial: Parse a urdf file

The question is: In which directory am I supposed to be during the various steps ? This question has confused me again and probably made me do some mistakes along the way. I'm trying to follow the ...
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1 answer
9 views

Unable to run the tutorial server and client

Hi everyone. I have an issue running the server and client python scripts from the tutorials. Could you please help me resolve the issue? I am using the Hydro distribution and I have followed the ...
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1 answer
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Unable to find/use catkin package

Hi everyone. I'm new to ROS and are following the tutorial. I have just created a package as seen in section 4 at the "CreatingPackage" tutorial (did not have enough karma to post the link) ...
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2 answers
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Something wrong with the "Make a map" tutorial?

When I follow the tutorials at "Make A Map", I execute the command "roslaunch turtlebot_gazebo turtlebot_playground.launch" in a terminal, but serveral errors are resonsed and the ...
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2 answers
2 views

Error while trying to follow tutorial

Hello everyone, I'm currently learning how to use ROS, but while I was following the tutorials in part 3 of the tutorial, I encountered an error. I was at the part where I try to edit: The ...
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1 answer
3 views

Ros tutorial problem - roscd

I create a ros package, while I us roscd that cannot find it. sunli@sunli-ThinkPad-T410:~/catkin_ws/src$ roscd begin_tutorials roscd: No such package/stack 'begin_tutorials' Then, I use rosws set, ...
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1 answer
4 views

ROS Beginner Tutorials: Examining the Simple Service and Client (python) - need some help with Client 2

Hey guys, I'm following the ROS Tutorials and, using the Python language, I'm currently having some issues trying to solve the item Examining the Simple Service and Client item (http ://www.ros .org/...
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2 answers
2 views

ROS beginner_tutorials (17th tutorial) Error

Hello, I am trying to learn ROS. So far I had many errors. Thanks to ROS Answers, I found solutions to them so far. I could not solve this one, so here is my question. I get this error when I am ...
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1 answer
2 views

ROS Beginner Tutorials: Examining the Simple Service and Client (python) - need some help

Hey guys, I'm following the ROS Tutorials and, using the Python language, I'm currently having some issues trying to solve the item Examining the Simple Service and Client item ([link text](http: // ...
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1 answer
3 views

beginner tutorial catkin_make error directory not found

I try to catkin_make packages but it fais: ...
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1 answer
9 views

Error with catkin_make when building package beginner_tutorials

Hi, I have installed a ROS groovy from source on Ubuntu 12.04 and working on the basic tutorial to get familiarised with ROS. As part of creating a message and service for the beginner_tutorials ...
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1 answer
35 views

roscd: No such package/stack 'beginner_tutorials'

Hi! I have found a bunch of questions about the same issue, but I don't think my problem is the same. So basically, I am super new to ROS and was going through tutorial page ros.org/wiki/ROS/Tutorials/...
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1 answer
20 views

ROS Beginner Tutorials: Writing a Simple Service and Client (python) - need some help

Hi guys, I'm following the ROS Tutorials and currently doing the item Examining the Simple Service and Client using the Python language ((http:// www.ros.org/wiki/ROS/Tutorials/ExaminingServiceClient))...
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3 answers
11 views

Change path of rosrun. Couldn't find executables?

I am following tutorials of ROS at the ROS wiki //www.ros.org/wiki/ROS/Tutorials/ExaminingPublisherSubscriber. When I try to run ...
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1 answer
2 views

ROS beginner tutorials:Writing Simple Service and Client (C++) - need explanation

I'm following the ROS beginner tutorials and currently doing 14.Writing Simple Service and Client (C++) (http://www.ros.org/wiki/ROS/Tutorials/WritingServiceClient%28c%2B%2B%29) In Section 1.2 Writing ...
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2 answers
5 views

rospack depends error

Hi, I have just installed ros goovy wihout errors. Now I follow the beginner tutorial and at tutorial "CreatingPackage" with catkin I have this error: rospack depens1 beginner_tutorial [...
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2 answers
12 views

rosrun not finding executable

I am at the "Writing a Simple Publisher and Subscriber (C++)" step in the tutorial and catkin_make works and i can manually run both ...
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1 answer
4 views

Begginer Tutorial Publisher/Subscriber Server/Client in C++ boost assertion failed

When I run the beginner tutorials for publisher/suscriber or service/client I get the following error: add_two_ints_server: /usr/include/boost/smart_ptr/shared_ptr.hpp:418: boost::shared_ptr::...
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1 answer
3 views

rosbuild error bad current directory

Hello, I'm just started to learn ROS. I'm set the package as in beginner tutorial (but my package name is firstpackage). The erros when I type make is the following ...
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