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why does rclpy timer have no update method and stored in ns?

using rclpy timer there does not appear to be any method for updating the timer period/interval there is simply a timer_period_ns variable which can be changed but it feels a bit off, especially the ...
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How does SLAM handle a changing environment?

Through SLAM, the map can be built for navigation. But the environment usually changes. When the environment, how does SLAM handle it? For exmaple, a) something is added into the environment b) ...
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map does not update with respect to base_link

Hello guys, can someone tell me why the map is not updating with respect to the displacement in base_link? The map keeps building at one place, whereas I can see the laser data moving wrt base_link, ...
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How to updating certain ROS2 package

Dear all: Currently Ros2 have released the new version which is called Eloquent Elusor. I found that some packages have updated likes RVIZ and I want to use it at old version which is Dashing. How ...
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apt update fails/ cannot install pkgs even after updating keys

While trying to run: apt update I encountered the same problem described in https://answers.ros.org/question/325039/apt-update-fails-cannot-install-pkgs-key-not-...
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Use wstool but keep git directories organized under a custom structure

Imagine I have the following structure in my directory: ...
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2 answers
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Rebuilding workspace after kinetic update?

Hi there. After the latest update I'm encountering various breakages and processes dying on startup. For example a Time is out of dual 32-bit range error. Should my ...
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1 answer
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How can I know if I have the latest version of ROS packages?

I have installed ROS Lunar on an Ubuntu 16.04.5 LTS. I have followed the steps in Lunar Installation instructions for Ubuntu. How can I know if I have the latest ros packages' version? I did: ...
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How can I update the system software DX100 controller - Yaskawa?

Please, can someone help me? I'm trying to update the system software DX100 controller to DS3.32.00-14 or greater (-14) version. I need to do it, because I would like to use the MotoROS app. I'm ...
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My workspace cannot build because assimp library update

Hello everybody, i have a problem and I do not have any clue how to solve it. Yesterday I updated my ubuntu 14.04 and with it, assimp was updated from 3.0 to 3.2. Until then, when i try to build the ...
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moveit regression? Found empty JointState message

Dear List, Since the last update of indigo (juli 2017) I am getting error messages in move_group with moveit. For example with moveit-commander, after each "go up" or so, there are 4 lines ...
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How to upgrade package

Hi ! I was wondering whether one could more or less easily upgrade a package (indigo -> kinetic or even up to lunar) by installing it with the source code taken on git in a catkin_ws ? I'm for ...
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ROS Indigo - rviz maker turned white after update

After latest update of ros-indigo-moveit and rviz, the markers (which had red and blue colors before) turned white. Originally posted by dhindhimathai on ROS Answers with karma: 136 on 2017-07-04 ...
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rosdep update urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed

When I run the rosdep update command I get the following error ...
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rosdep update: "No address associated with hostname"

I have a Intel RealSense robotic development kit. I installed Ubuntu 16.04. ...
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'rosdep update' sporadically working (Ubuntu 14.04, indigo, ARM)

Installing indigo arm on jetson tegra tk1 using these instructions: (http://wiki.ros.org/indigo/Installation/Ubuntu). I am at 'rosdep update' and it fails sporadically at different points. I have ...
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How to update a gui (python) each time the callback function is called in a subscriber node?

Hello, I want to have several nodes send their position (x,y) to a 'visualizer' node which draws on some window/gui continuously as more data is published by the former nodes. What I have so far (...
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How to update a robot visual enable check box in Rviz from a running node (c++)

Hi, I would like to hide an existing robot model in Rviz from my running node (c++), I don't want to be checking and unchecking the visual enable option in the RobotModel, I would like to do it ...
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Dynamic parameters update from the code (cpp)

Hello, folks! I am having trouble to update the dynamic parameters from c++ code. My first attempt was to follow hokuyo_node tutorial. So I put this line in my code: ...
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Slow navigation stack update

Hi everyone, I'm having issues with navigation stack. The position of the robot only updates every second causing the data not to reach the robot in time and the robot crashing into walls because ...
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What is "Rolling Window" used for?

Hello~ all Recently I do some research about Robot Navigation. I'd like to find a way to save new map updated by Local Plan(Scan) while doing navigation. I found a interesting parameter "Rolling ...
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repeated service calls cause strange behavior, publication of joint angle updates compromised?

Hi. Using Linux 14.04, ROS Indigo. I am implementing a force controller loop that also consists of an inner position control loop. My set-up is as follows: I have tried asyncspinner/multithreaded ...
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rosdep update error

I'm troubled in install ROS on my BeagleBone Black,everything runs ok until "rosdep update",for example: ...
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update source package?

Hi all, I'd like to apply changes mentioned here: https://github.com/ros-drivers/rosserial/issues/150 and here: http://answers.ros.org/question/197596/a-problem-in-transfering-neagtive-values-to-...
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Copied Workspace, now Problem with rosdep

Hi guys, I accidentally deleted my plattform but could save my workspace somehow. Now i set up a new Ros Indigo with Ubuntu 14.04 same stuff as before. I copied my data in my new workspace and sourced ...
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1 answer
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Warning with ompl

Hello, I have updated my ros packages, now when I use catkin_make or run certain nodes, I obtain: ...
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How can I update the point clouds in the slam problem?

At present, many methods have been proposed to solve the slam problem,such as rgbdslam ,I meet a problem,When robot visted a place which is visted before, There is a new obstacle ,generallly,The ...
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Gazebo systematically crashing and strange model display

Hello, Under Ubuntu 12.04 and ROS Groovy, I have a very strange and annoying behaviour of Gazebo, which seems to be related to the recent ROS package update I made. Whatever launch file I roslaunch ...
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local cost map not updated

Hi, All, I am using a 6m laser range finder to generate local cost map. (Hokuyo URG). I found the the local cost map was not updated promptly. what happens is that, whenever an obstacle occurs in the ...
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Since updating ROS a few hours ago, ROS/catkin is broken

Hi all, A couple of hours ago, I updated my system (sudo apt-get update; sudo apt-get upgrade). Updates included a lot of Hydro updates as well. However since then, catkin_make always ends in an error....
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Indigo Installation - Ubuntu 14.04 Permission errors

Hello, To start I am new to both Ubuntu and ROS. I am trying to follow the installation guides but am getting bogged down in permissions errors. I installed and removed ROS Indigo once already because ...
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rosdep update error (gentoo.yaml empty)

Hi, I just noticed a strange error when executing rosdep update. ...
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2 answers
105 views

Hello, when I run rosdep update, i get 'timed out'

after running 'rosdep update', it shows: ...
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PR2 upgrade, sources http://packages.willowgarage.com

I just wanted to update - upgrade the robot (with the usual sudo apt-get update && sudo apt-get upgrade) within the robot. Nonetheless it cannot be done ...
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packages url Ubuntu12.04 armhf

Hi, While running apt-get update on Ubuntu12.04, the error Err http://packages.namniart.com precise Release.gpg Could not resolve 'packages.namniart.com' Fetched 2,855 kB in 30s (94.9 kB/s) Reading ...
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CostMap2D no longer showing unknown space

Hello, I am running ROS Hydro on Ubuntu 12.04. I have written an application that runs alongside gmapping_demo.launch but has its own Costmap2DROS object keeping ...
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How to upgrade from Groovy to Hydro?

I have ROS Groovy installed. Is their any way to upgrade to Hydro using terminal commands? Originally posted by expelliarmus on ROS Answers with karma: 28 on 2014-02-21 Post score: 0
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Extrapolation Error, costmap update, RVIZ bug

Dear people. I just passed from groovy to Hydro. And, I found out differences in the costmaps yaml files. I have three issues, I hope you could help me :) 1.- When I run the navigation stack, and ...
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Is an update from Groovy to Hydro necessary to use Kinect?

I got a kinect and I am trying to follow the documentation http://wiki.ros.org/openni_launch/Tutorials/QuickStart However, I get the following output. $ roslaunch openni_launch openni.launch [...
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RViz and interactive markers: Why does not pose automatically updated?

Hi all, When an interactive marker's pose is changed using a control (for instance the 6-DoF control provided in basic_controls), why does the field int_marker.pose is not filled why the new value ...
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1 answer
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"rosdep update" broken after ubuntu 12.04.04 amd64 ros-groovy-* updates

After updating ros-groovy-* packages from official precise repository found out that rosdep ...
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undefined symbol

Hi, I updated hydro this morning then I run "rosrun lms1xx LMS1xx_node .." I get error. error: /home/xx/catkin_ws/devel/lib/lms1xx/LMS1xx_node: symbol lookup error: /home/xx/catkin_ws/devel/...
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1 answer
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Costmaps observation buffer has not been updated

Hi There, I receive following error message when starting my costmap, which is instantiated: ...
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1 answer
5 views

Costmap does not change on movement

Hey there, I do have a problem with my local costmap. As I move with my robot, the map (slam gmapping) changes but the overlying costmap remains unchanged!!! The launch files for the costmap work, ...
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2 answers
17 views

How to update gmapping continuously?

Hi all, do someone know how to update the slam gmapping map more often. I need continuous updates in time. It should not longer depend on the degree of exploration. So far I did not manage it, quite ...
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1 answer
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No gazebo-ros package after update?

After the recent 2.0.0 Gazebo update, I can no longer run gazebo_ros. It has been deinstalled during the update. When trying to install gazebo-ros-pkgs, I get the following output: ...
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4 answers
2 views

Update Problem, Error: is not a package or launch file name

Hi, everything was OK before I did update. After update of ROS packages the ROS Groovy not work or give me the following message: ...
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1 answer
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Package not compiling after update

Hi, ubuntu 12.04 and fuerte I just updated the ros-fuerte- realted things from ubuntu software center and the packages which were working and compiling before are showing this error. ...
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1 answer
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ROS Groovy vs. Gazebo

Hi all, is it possible to switch from Gazebo version which comes with Groovy (1.5) to the latest one installed from deb repo according to instructions on gazebosim.org? I mean switch in a way that I ...
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catkin src/* vcs update

Hey everyone, I'm probably missing something here... Is there/What is the equivalent of rosbuild's rosws update for catkin in the sense of updating all repository ...
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