Questions tagged [path]

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Planned Path vs Actual Path for Real Robot

I would like to compare/visualize the planned path and actual path of an industrial robot. I am using Moveit2 and I can access planned trajectory via /display_planned_path topic which is moveit_msgs/...
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Rigorous terminology clarification - Path Planning, Path Following, Trajectory Planning, Trajectory Following and Motion Planning

I am asking this after having gone through quite a bit of literature and hope that it's not a repeat question. I would like to know proper mathematical notion that clearly defines a Path and a ...
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How can I get more in depth in path following?

I wanted to learn more about ROS, path planning, following etc. I made my own path following algorithm, a simple PD controller that follow waypoints. On a path msg it didn't worked really well, but it ...
defend's user avatar
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2 answers
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executable '[<launch.substitutions.text_substitution.TextSubstitution>]' not found on the PATH

I am trying to launch the first example from the ros2 control demo package: https://github.com/ros-controls/ros2_control_demos/tree/humble. I am using ROS2 humble on ubuntu 22.04. First I built every ...
Benno's user avatar
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3 answers
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position estimation using imu

I have an Inertial Navigation System (INS) that publishes position information in GPS and UTM formats. I have mounted the device on a robot. My objective is to move the robot from location A to ...
programmer_smart's user avatar
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1 answer
218 views

Ros2: OccupancyGrid with RPlidar

I am looking for places to find information how to create an OccupancyGrid with RPlidar. Everything I find is older or only for ros1. I need to create an OccupancyGrid using my RPlidar, the objective ...
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Unable to link ros::package::getPath

I'm trying to do the same as this example : https://answers.ros.org/question/39523/rospackagegetpath-problem/ The function is documented here : http://docs.ros.org/en/jade/api/roslib/html/c++/...
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find_package() on ROS_PACKAGE_PATH?

Sorry in advance if this is a poorly constructed idea/question. I have strict orders that I can't use caktin build and that I should only use basic make/cmake ...
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1 answer
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Writing a planner plugin for ROS2 using Python

I found this tutorial, which shows how to create a new planner plugin for ROS2 using C++. However, I was wondering if there are any resources on how to achieve the same goal using Python? I am aware ...
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1 answer
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Importing a service in python defined by others

I am stuck in something that should be pretty easy... I have a service called "set_odometry", which I can use doing rosservice from the bash. This service is installed from apt-get so I don'...
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1 answer
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Catkin install destination

I'm trying to figure out where my files should be installed by the Cmake install() macro (ROS melodic on Ubuntu 18.04). I found this list of catkin environment variables which are relative to the <...
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Compute joint angles of movement without execution

I am planning, executing and recording linear robot movement with computeCartesianPath(). I would like to "simulate" this program. Essentially just ...
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1 answer
16 views

nav_msgs Path: is it possible to separate the visualized trajectories?

Hello, I'm using the nav_msgs::Path message to visualize multiple trajectories. With one path publisher! I want to separate these trajectories, i mean, i don't want ...
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1 answer
9 views

How to get joint, speed, acceleration values of cartesian path?

I'm currently working with OMPL and waypoints. This tutorial explains how to use them. Everything working fine and the plan from start to goal is executed. The terminal tells me the following: ...
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1 answer
6 views

Own nav path has closed loop in rviz

Hi, I want to make simple path following for differential drive robot, So, I generated nav.msg/Path with own points and publish it, but in rviz I see my path with connection between start and end ...
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Different outcome for the same quaternion between geometry_msgs::Pose and tf::Transform

Here is the code I am using to broadcast a transform and publish the path of the same transform. ...
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1 answer
2 views

unexpected robot behaviour with navigationstack

Hello everybody, i have some problems again and hope someone can help me. Following scenario: I have a robot platform, diff-drive with laser scanner mounted pointing forward i have already recorded a ...
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2 answers
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3D path planning in an underwater environment with obstacles

Hello, I was hoping to ask for some guidance from the ROS community on my current project. I am tasked with creating a controller capable of navigating AUVs (autonomous underwater vehicles) and ...
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1 answer
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Global Path Planner Plugin with Oscillating Husky and Flickering Path Issue

Hello, I am trying to make a predefined path for my robot to follow. From my question here, I was adviced to create a custom global planner plugin to define the path and allow the local planner to ...
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1 answer
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Visualizing a real drone's path

Hi! I would like to visualize a real AR.DRONE 2.0's path with a simple line in a plane grid. My question is which is the simplest method? Should i use Rviz? I found ros3djs javascript library, which ...
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1 answer
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ROS Answers SE migration: publish a path

Hello, I want to publish a path, but with this code I can publish only one point at a time: geometry_msgs::Point msg; What can I do to publish the path? This page should work, but I don't know exactly ...
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how to try different path planning algoritms in Rriz

Hİ How is it possible to try different global path planning algorithms in Rviz ? http://wiki.ros.org/global_planner thanks Originally posted by Developer on ROS Answers with karma: 69 on 2018-01-21 ...
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1 answer
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How to create a Publisher about trajectory path, then show it in rviz?

Hi, thank you for your attention. I am running gmapping_demo with turtlebot. I want to know how to create a Publisher of the (robot) trajectory path in rviz. And then I could show it in rviz. It is ...
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1 answer
3 views

Why does the navfn plan a path through a wall

Hi,all, we are using navfn in move_base to plan a global path for a robot. For now, the experiments are being done in a simulated environment by gazebo. However, we found that if the robot is close to ...
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1 answer
27 views

Are there 3D path planner algorithms in ROS?

Are there packages in ROS, which make 3D path planner algorithms for mobile (track) robot, without using 2D maps and 2D navigation? Originally posted by baltic on ROS Answers with karma: 35 on 2017-...
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1 answer
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navigation stack with teb_local_planner planning path through wall

Hello! I'm currently trying to use teb_local_planner to get my robot to navigate through the willow garage simulation. However, I have the issue that in specific situations the local path planning ...
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1 answer
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How to achieve quadcopter autonomy after successful implementation of 2D SLAM using RPLidar and "hector_slam" ROS package in indoor environments?

I have a Naza M Flight Controller which can give me the IMU readings (I don't know if I can extract this information by interfacing it with ROS, else I will have to use an external IMU). I also need ...
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1 answer
14 views

moveit path planning problem

i planned a path and execute it using move it.The path is executed by ABB robot 2400.It is moved by using instruction group.asyncMove(). While it is executing a path can i stop the robot in the middle ...
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1 answer
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How many ROS paths can ~/.bashrc file store? Will the path influence each other

I met a strange problem. This is the path in my bashrc ...
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2 answers
2 views

How to control the speed of urdf model using moveit

How can i dynamically vary the speed of urdf robot while it is doing some path planning in rviz? Originally posted by anadgopi1994 on ROS Answers with karma: 81 on 2016-11-11 Post score: 0
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1 answer
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A* (A star algorithm) implementation in gazebo

Hi Everyone, I am working on my project but now i am puzzled at A* algorithm implementation. I have successfully done these things. please see the attached image https://s12.postimg.org/f3o1xtprx/...
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1 answer
5 views

How to get laser data in gazebo?

Hi everyone I have created my diff drive robot and also mounted laser on the robot using Hokuyo model. Now I need to move my robot from start position to the goal position. I can't understand how to ...
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1 answer
21 views

NameError: global name 'NAME' is not defined <SOLVED>

Hi people! :) i am listening GPS's data and i want use them in another part of my code, for do Path Planing, but when I try to use them, it give me back this error I defined variable global (global ...
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1 answer
8 views

Costmap wagon ruts Layer

I m trying to make some preference highways path. So in order to the robot go from point a to point b, the cost map will be such that the robot will consider walking to the nearst highway to walkout ...
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1 answer
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Not a Valid Identifier

I am following the tutorial found on the book Learning ROS by Martinez page 40. When creating a new workspace, after adding a folder and trying to add this path to ROS_PACKAGE_PATH I keep getting the ...
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1 answer
3 views

Moveit - Extract path

Hello, I am using the cartesian path planner plugin and it somehow works. I can visualize the movement for a given goal point. But how can I extract all the intermediate points from the trajectory? I ...
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1 answer
2 views

Is there an existing speed control node to connect the robot_localization state estimator with the diff_drive_controller?

I am using ROS Indigo on a differential drive robot for indoor use (no GPS). The path is pre-determined and the velocity along the path is to be controlled. I believe that move_base node would be ...
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1 answer
13 views

Path Planning using moveIt with a closed-loop chain

Hi everyone, I am working on an robot arm which happens to be a closed-loop kinematic chain. I achieved to have a somewhat accurate simulation with gazebo7. Now I have installed ros Indigo and I want ...
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1 answer
7 views

How can i copy non-binary files into my binaries directory with catkin and cmake?

Hi, I have a benchmarking executable in my project which pulls data from bagfiles. Now I want to copy the folder with my bagfiles into the directory where my binaries end up, because I have hardcoded ...
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1 answer
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Path planning to follow another car parallely

Hej guys, I am currently working on a project where i have to create trajectories(set of waypoints) for a rc car in such a way it follows another car parallely. I have the GPS signals for both cars. ...
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1 answer
3 views

Global planner path update faster

how do i make the global planner realize that its path is blocked by an obstacle and re-update faster ? Originally posted by rajnunes on ROS Answers with karma: 73 on 2016-06-09 Post score: 0
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1 answer
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Using setJointValueTarget and setPoseTarget have different results

The following code works, if the target is defined by Joint Value. But if I define the same point by Pose (as in the comment section), the planning path is different every time I run the code. And ...
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1 answer
6 views

draw the path with hector slam

hello every one, I am using the hector slam with hokuyo. i do have have the map but i need to see the path of the robot on Rviz can anyone help me please Originally posted by aziz on ROS Answers with ...
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1 answer
24 views

Good Path following controller for ROS!

Hello people, I am trying to generate collision free trajectory using specific planning algorithm and i got my trajectories from my planner and now i need a path-following controller to make the car-...
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1 answer
2 views

Hector Nav Msgs build error - in Eclipse

I am new to ROS, and Linux, but have experience with Eclipse in windows environment. I have a few nodes (including Hector SLAM catkin) all functioning using ROS_MAKE and ROSRUN from the terminal. I ...
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1 answer
8 views

Path planning with adaptive Monte Carlo Localization ( AMCL )

Hi The localisation for my mobile robot works with the AMCL package. Apparently you can also implement path planning with this package. But I don't find anything about this, how does this work? This ...
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2 answers
6 views

Navigating a robot using same path every time

Hello, I am not sure if I am clear here with my question. What I want to do is create a map with couple of obstacles in it and to make the robot drive around them, making an 8 shape. Something similar ...
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1 answer
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Do I really need to $ source ~/catkin_ws/devel/setup.bash?

Novice question: I've created a custom message, package, etc as the official tutorial does. But when i do: $ rosrun pkg_test1 pkg_test1_node it gives me: [rospack] Error: package 'pkg_test1' not found ...
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2 answers
8 views

[navigation stack] How to Navigate using User-defined path?

Hi guys , Since i'm working on the Robot Project which using the navigation stack , The Robot Can Travel based on the shortest path. But, What if i want to define the static path to the robot what ...
tutorgaming's user avatar
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1 answer
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How can I make my local plan path in navigation stack longer?

Hy, I have a pretty large robot which I'm trying to navigate using ROS Navigation stack. It is about 1.2m long and 0.8m wide. The problem is, when moving, the robot trajectory is oscillating around ...
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