tfoote's profile - overview

● Student   × 2

• Which data types does tf use?
• Which data types does tf use?

● Stellar Question   × 2

• what are quaternions and how can I use them?
• what are quaternions and how can I use them?

● Supporter   × 2

• How do I build everything?
• How do I build everything?

● Autobiographer   × 2

● Scholar   × 2

• Which data types does tf use?
• Which data types does tf use?

● Nice Answer   × 986

• When should one use answers.ros.org vs. the ros-users mailing list?
• When should one use answers.ros.org vs. the ros-users mailing list?
• What is a ROS package?
• What is a ROS package?
• How to get notified of new questions with a certain tag by email?
• How to get notified of new questions with a certain tag by email?
• How do I get Karma?
• How do I get Karma?
• Build Architecture Question
• Build Architecture Question
• ros_comm package tags
• ros_comm package tags
• How can I get a unique device path for my Arduino/FTDI device
• How can I get a unique device path for my Arduino/FTDI device
• Corrected Odometry from GMapping / Karto?
• Corrected Odometry from GMapping / Karto?
• OpenNI compilation error, Diamondback, version mobile, ARM
• OpenNI compilation error, Diamondback, version mobile, ARM
• rxplot for vector like types
• rxplot for vector like types
• what hardware drivers does ROS provide?
• what hardware drivers does ROS provide?
• is there a python equivalent of fromROSMsg/toROSMsg (pcl stack)
• is there a python equivalent of fromROSMsg/toROSMsg (pcl stack)
• sharing code on Answers.ros.org
• sharing code on Answers.ros.org
• ROS Packages vs. Linux Packages
• ROS Packages vs. Linux Packages
• PCL include files
• PCL include files
• Multiple Kinects: Same Topics from different nodes, how to subscribe?
• Multiple Kinects: Same Topics from different nodes, how to subscribe?
• Multiple Kinects: Same Topics from different nodes, how to subscribe?
• Multiple Kinects: Same Topics from different nodes, how to subscribe?
• deb packages for former "ni" stack
• deb packages for former "ni" stack
• genaction not found in diamondback
• genaction not found in diamondback
• is ros client c++ code thread safe?
• is ros client c++ code thread safe?
• pcl bag_to_pcd
• pcl bag_to_pcd
• How to setup pointcloud_to_laserscan?
• How to setup pointcloud_to_laserscan?
• What is the tf threading model?
• What is the tf threading model?
• What are 'bond' topics for?
• What are 'bond' topics for?
• PointCloud subscriber/publisher types
• PointCloud subscriber/publisher types
• How do I test the ROS version in C++ code?
• How do I test the ROS version in C++ code?
• how does second term of advertise
• how does second term of advertise
• Why don't frame_ids use ROS namespaces?
• Why don't frame_ids use ROS namespaces?
• static_transform_publisher negative average delay
• static_transform_publisher negative average delay
• openni_node internal throttle to limit cpu usage
• openni_node internal throttle to limit cpu usage
• Error assigning a python quaternion
• Error assigning a python quaternion
• How do I find which debian package a stack is in?
• How do I find which debian package a stack is in?
• roscpp message callback threading?
• roscpp message callback threading?
• How to reply to answers?
• How to reply to answers?
• Recommended system for complex ROS programs + simulations
• Recommended system for complex ROS programs + simulations
• Is there a command line utility to list available nodelets within the package path?
• Is there a command line utility to list available nodelets within the package path?
• Is it better/prefered to combine nodelets programmatically or in a launch file?
• Is it better/prefered to combine nodelets programmatically or in a launch file?
• decimation of image streams?
• decimation of image streams?
• how do I publish a new ros node or package?
• how do I publish a new ros node or package?
• Running several nodes under a "top" node
• Running several nodes under a "top" node
• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• Nodelets and bond timeouts
• Nodelets and bond timeouts
• who is heading the development of ROS?
• who is heading the development of ROS?
• how to programmatically add/remove displays in rviz
• how to programmatically add/remove displays in rviz
• Is an IMU required to run Turtlebot stack?
• Is an IMU required to run Turtlebot stack?
• how can I modify the value of a transform when playing back a bag file?
• how can I modify the value of a transform when playing back a bag file?
• ROS msgs not received if publisher starts after subscriber
• ROS msgs not received if publisher starts after subscriber
• Problem with MAC OS installation with YAML.
• Problem with MAC OS installation with YAML.
• nodelet doesn't start
• nodelet doesn't start
• Editing Answers on answers.ros.org
• Editing Answers on answers.ros.org
• rosinstall inifinite recursion problem
• rosinstall inifinite recursion problem
• TF message arrays
• TF message arrays
• ODE from Gazebo and ROS
• ODE from Gazebo and ROS
• what might cause the shoulder_lift_joint not to go all the way up?
• what might cause the shoulder_lift_joint not to go all the way up?
• cancelGoal crashes if called before any goal has been sent...
• cancelGoal crashes if called before any goal has been sent...
• rosbag play & tf static_transform_publisher
• rosbag play & tf static_transform_publisher
• Rosinstall issue in 3d_navigation
• Rosinstall issue in 3d_navigation
• How to run ROS on beagleboard effectively?
• How to run ROS on beagleboard effectively?
• Email Notifications on Interesting Questions
• Email Notifications on Interesting Questions
• No such file or directory when using rosrun?
• No such file or directory when using rosrun?
• How do I run the 'openni_tracker'
• How do I run the 'openni_tracker'
• upgrade to ubuntu natty 11.04, or wait?
• upgrade to ubuntu natty 11.04, or wait?
• Do subscribers work on a FIFO queue?
• Do subscribers work on a FIFO queue?
• What is the difference between geometry and tf quaternions?
• What is the difference between geometry and tf quaternions?
• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• Is there a way to merge bag files?
• Is there a way to merge bag files?
• How does cloud_to_laserscan.cpp work
• How does cloud_to_laserscan.cpp work
• How can I get rosmake to print warnings.
• How can I get rosmake to print warnings.
• tfListener can't find frames
• tfListener can't find frames
• Change rostest max time allotted
• Change rostest max time allotted
• ROS libraries
• ROS libraries
• roscore does not work with diamondback on karmic
• roscore does not work with diamondback on karmic
• Trigger code segments for ROS_DEBUG only
• Trigger code segments for ROS_DEBUG only
• Datarange Float32 xyz-values in pointcloud2 for kinect
• Datarange Float32 xyz-values in pointcloud2 for kinect
• Rviz bug: transform from the same frame does not exist
• Rviz bug: transform from the same frame does not exist
• What is tf2?
• What is tf2?
• Does turtlebot works on Kubuntu?
• Does turtlebot works on Kubuntu?
• boost::filesystem version issues
• boost::filesystem version issues
• KeyError: '10' when running rosdep install on Linux Mint 10 machine
• KeyError: '10' when running rosdep install on Linux Mint 10 machine
• ROS electric on UBUNTU Netbook 10.04
• ROS electric on UBUNTU Netbook 10.04
• ROS in VMWare, No information shown in rviz
• ROS in VMWare, No information shown in rviz
• How can I use "RepoHeader" syntax when creating tutorial page?
• How can I use "RepoHeader" syntax when creating tutorial page?
• Is ROS able to cancel the limit of karma to upload pictures?
• Is ROS able to cancel the limit of karma to upload pictures?
• What is the difference between tf and tf2?
• What is the difference between tf and tf2?
• What are the best practices for tagging questions?
• What are the best practices for tagging questions?
• Best PC architecture to run Turtlebot
• Best PC architecture to run Turtlebot
• CameraInfoManager is depreciated, what is replacing it?
• CameraInfoManager is depreciated, what is replacing it?
• Twist message coordinate system convention
• Twist message coordinate system convention
• How do I add a new stereo or monocular camera to ROS?
• How do I add a new stereo or monocular camera to ROS?
• can multiple instances of gazebo and/or roscore run in parallel
• can multiple instances of gazebo and/or roscore run in parallel
• using tf data from bag files
• using tf data from bag files
• No debugging symbols found in base_local_planner library
• No debugging symbols found in base_local_planner library
• How to edit a package listing.
• How to edit a package listing.
• Plans for pluginlib for Python
• Plans for pluginlib for Python
• "Installing and Configuring Your ROS Environment" -bash: /opt/ros/electric/setup.bash: No such file or directory
• "Installing and Configuring Your ROS Environment" -bash: /opt/ros/electric/setup.bash: No such file or directory
• Starting the Turtlebot on 11.04 as a non turtlebot user
• Starting the Turtlebot on 11.04 as a non turtlebot user
• installing ros diamondback on ubuntu 11.10 oneiric ocelot
• installing ros diamondback on ubuntu 11.10 oneiric ocelot
• How do you upgrade pcl to the current release?
• How do you upgrade pcl to the current release?
• Electric Turtle install fails on ARM, Ubuntu 11.04
• Electric Turtle install fails on ARM, Ubuntu 11.04
• how to communicate the hardware to a realtime controller
• how to communicate the hardware to a realtime controller
• Angles for quaternion converter
• Angles for quaternion converter
• tf::TransformListener lookupTransform time error
• tf::TransformListener lookupTransform time error
• Ubuntu Oneiric Install Fails
• Ubuntu Oneiric Install Fails
• Gathering Wheel Encoder data and publishing on the /odom topic
• Gathering Wheel Encoder data and publishing on the /odom topic
• Gyro and Odometry Calibration Not Effective?
• Gyro and Odometry Calibration Not Effective?
• Logging data to different files
• Logging data to different files
• How does the navigation work in TurtleBot
• How does the navigation work in TurtleBot
• RGBDSLAM with ROS electric on Linux Mint 12
• RGBDSLAM with ROS electric on Linux Mint 12
• Separate ROS android library
• Separate ROS android library
• Recursive rosmake --mark-installed
• Recursive rosmake --mark-installed
• Clock - How to change it?
• Clock - How to change it?
• ROS Diamondback on Ubuntu 64 bit
• ROS Diamondback on Ubuntu 64 bit
• gazebo supported graphics card
• gazebo supported graphics card
• snapshotting rxgraph
• snapshotting rxgraph
• How to catch nodelet shutdown signal?
• How to catch nodelet shutdown signal?
• Download a package with rosmake
• Download a package with rosmake
• problem installing ros in fedora 13
• problem installing ros in fedora 13
• rosinstall alternative
• rosinstall alternative
• NAO error: No module named yaml
• NAO error: No module named yaml
• geometry installation error
• geometry installation error
• Executable not found in /bin directory
• Executable not found in /bin directory
• Is there a minimum laptop specification for the TurtleBot?
• Is there a minimum laptop specification for the TurtleBot?
• Settings to change the theme?
• Settings to change the theme?
• trajectory error in simulation / controller parameters
• trajectory error in simulation / controller parameters
• BSD license questions
• BSD license questions
• Compiler Segmantion fault durint ROS installation on OSX Lion
• Compiler Segmantion fault durint ROS installation on OSX Lion
• What packages provide visual odometry?
• What packages provide visual odometry?
• ROS Background
• ROS Background
• What's the meaning of global in getGlobalCallbackQueue()?
• What's the meaning of global in getGlobalCallbackQueue()?
• Create not going forward
• Create not going forward
• Disabling boost for a custom package
• Disabling boost for a custom package
• problem with roscreate-pkg
• problem with roscreate-pkg
• subscriber queue length
• subscriber queue length
• Filtering transform over time
• Filtering transform over time
• How to manually add messages to tf::MessageFilter?
• How to manually add messages to tf::MessageFilter?
• Calculating velocity from tf
• Calculating velocity from tf
• Why is Twist message without timestamp
• Why is Twist message without timestamp
• costmap2D from 3Dpointcloud
• costmap2D from 3Dpointcloud
• Failed to put the turtlebot in full mode
• Failed to put the turtlebot in full mode
• How to recursive mark ROS_NOBUILD with rosmake --mark-installed ?
• How to recursive mark ROS_NOBUILD with rosmake --mark-installed ?
• sick drivers don't have diagnostics
• sick drivers don't have diagnostics
• Starting Calibration with openni_tracker
• Starting Calibration with openni_tracker
• Is it possible to remap topics at runtime?
• Is it possible to remap topics at runtime?
• imu stack tutorial non-functional
• imu stack tutorial non-functional
• ecto installation fails on 'git submodule update'
• ecto installation fails on 'git submodule update'
• Moderating ROS-Users
• Moderating ROS-Users
• ros-fuerte-pr2-desktop
• ros-fuerte-pr2-desktop
• ROS service tutorial -- make error
• ROS service tutorial -- make error
• Gumstix, uvc_camera and cv_capture
• Gumstix, uvc_camera and cv_capture
• Using rosdep to install WG maintained stacks
• Using rosdep to install WG maintained stacks
• Armel debian packages
• Armel debian packages
• How to tell which version of a package was tagged for a particular release?
• How to tell which version of a package was tagged for a particular release?
• Equivalent of --rosdep-install in Fuerte
• Equivalent of --rosdep-install in Fuerte
• ROS Backwards Compatibility in Distributed System
• ROS Backwards Compatibility in Distributed System
• What is this rosdep error?
• What is this rosdep error?
• Compiling ROS with boost >1.41
• Compiling ROS with boost >1.41
• rosinstall behind Proxy
• rosinstall behind Proxy
• TF on multiple robots gets crowded
• TF on multiple robots gets crowded
• Missing ROS_format.xml
• Missing ROS_format.xml
• Separate build and run dependencies (in official debs especially)?
• Separate build and run dependencies (in official debs especially)?
• tf extrapolation exception using ros::Time(0)
• tf extrapolation exception using ros::Time(0)
• How do I get started with ROS?
• How do I get started with ROS?
• Plume Sim in ROS
• Plume Sim in ROS
• unable to get valid path when calling /ompl_planning/plan_kinematic_path
• unable to get valid path when calling /ompl_planning/plan_kinematic_path
• Fixed target frame for transformLaserScanToPointCloud?
• Fixed target frame for transformLaserScanToPointCloud?
• can't access ROS svn
• can't access ROS svn
• LaserScan ranges values - left and rightmost scans.
• LaserScan ranges values - left and rightmost scans.
• Failed to find rosdep libglui-dev for package view_mesh on OS:ubuntu version:oneiric
• Failed to find rosdep libglui-dev for package view_mesh on OS:ubuntu version:oneiric
• rosbag file cannot be made // .bag.active
• rosbag file cannot be made // .bag.active
• how do I "install" stacks into /opt/ros?
• how do I "install" stacks into /opt/ros?
• rviz crashing on startup with nvidia drivers installed
• rviz crashing on startup with nvidia drivers installed
• Converting SolidWorks STL files into urdf file
• Converting SolidWorks STL files into urdf file
• rosws info gives me error 'VcsClient' object has no attribute 'url_matches'
• rosws info gives me error 'VcsClient' object has no attribute 'url_matches'
• I can not launch the sample code
• I can not launch the sample code
• Order of published/subscribed messages
• Order of published/subscribed messages
• How stable is ROS for long-term operations?
• How stable is ROS for long-term operations?
• How do you exit back to safe mode after running a roslaunch file?
• How do you exit back to safe mode after running a roslaunch file?
• ROS + Lego NXT + Kinect?
• ROS + Lego NXT + Kinect?
• Heterogeneous Robot Communication Over ROS Framework
• Heterogeneous Robot Communication Over ROS Framework
• Catkin conversion: /usr/bin/ld: cannot find -lPACKAGE_NAME
• Catkin conversion: /usr/bin/ld: cannot find -lPACKAGE_NAME
• ROS fuerte installation problem on 12.04
• ROS fuerte installation problem on 12.04
• How to get publisher info from a message?
• How to get publisher info from a message?
• Are there ROS API documents published, and where?
• Are there ROS API documents published, and where?
• Why is tutorial code isolated from the package code?
• Why is tutorial code isolated from the package code?
• groovy openni 1.5.4 upgrade error
• groovy openni 1.5.4 upgrade error
• Roomba or Create
• Roomba or Create
• Problem simulating kinect in gazebo
• Problem simulating kinect in gazebo
• avoiding having to call catkin_make for changes to python modules?
• avoiding having to call catkin_make for changes to python modules?
• rosdep resolve yaml-cpp not working for debian:wheezy
• rosdep resolve yaml-cpp not working for debian:wheezy
• Unmet dependencies installing Groovy on Oneiric
• Unmet dependencies installing Groovy on Oneiric
• adding a message at the end of a bag file
• adding a message at the end of a bag file
• Does anyone know how to install ROS without a graphics card?
• Does anyone know how to install ROS without a graphics card?
• usb_cam: VIDIOC_S_FMT error 22
• usb_cam: VIDIOC_S_FMT error 22
• service exception using tf listener in rospy
• service exception using tf listener in rospy
• groovy source install is strange
• groovy source install is strange
• Cannot check out the mit-ros-pkg code
• Cannot check out the mit-ros-pkg code
• Revisit REP3 with respect to C++11?
• Revisit REP3 with respect to C++11?
• how to make debian packages for ros fuerte or groovy
• how to make debian packages for ros fuerte or groovy
• catkin migration from rosbuild package does not mention Makefile
• catkin migration from rosbuild package does not mention Makefile
• Sound localization with Kinect and ROS?
• Sound localization with Kinect and ROS?
• Groovy generator error!
• Groovy generator error!
• Turtlebot2 power for laptop
• Turtlebot2 power for laptop
• Set TF_CACHE_TIME with rospy
• Set TF_CACHE_TIME with rospy
• rosdep initialization without internet
• rosdep initialization without internet
• UDPROS Protocol and Lost Packet/Sequencing Algorithms
• UDPROS Protocol and Lost Packet/Sequencing Algorithms
• ImportError: No module named yaml
• ImportError: No module named yaml
• Are package maintainers allowed names with apostrophes?
• Are package maintainers allowed names with apostrophes?
• Matrix multiplication in ROS CPP
• Matrix multiplication in ROS CPP
• Turtlebot follower demo not following
• Turtlebot follower demo not following
• How to play rosbag using launch file ?
• How to play rosbag using launch file ?
• Is anyone else thinking about wrapping the leap for ROS?
• Is anyone else thinking about wrapping the leap for ROS?
• [Turtlebot] Turtlebot doesn't walk in a straight line
• [Turtlebot] Turtlebot doesn't walk in a straight line
• How to install ROS-fuerte with the dependency to python 2.6 when python 2.7 also exists in Ubuntu12.04?
• How to install ROS-fuerte with the dependency to python 2.6 when python 2.7 also exists in Ubuntu12.04?
• ROS packages not only for Ubuntu - OBS Build Service
• ROS packages not only for Ubuntu - OBS Build Service
• OpenNI/NITE incompatible in Fuerte/Groovy on Precise
• OpenNI/NITE incompatible in Fuerte/Groovy on Precise
• how run a package?
• how run a package?
• Does rosdep support installing dependencies from PPAs?
• Does rosdep support installing dependencies from PPAs?
• How to start up the Kinova (JACO Arms) API in ROS?
• How to start up the Kinova (JACO Arms) API in ROS?
• Why is ROS ANSWERS forum so easily exploitable?
• Why is ROS ANSWERS forum so easily exploitable?
• Install ROS dependencies from apt?
• Install ROS dependencies from apt?
• Why can't catkin depend on rosbuild?
• Why can't catkin depend on rosbuild?
• Where are the ROS Hydro stacks installed?
• Where are the ROS Hydro stacks installed?
• Transform from rosbuild package to catkin package
• Transform from rosbuild package to catkin package
• ros::Time doesn't update in variable
• ros::Time doesn't update in variable
• Why does `rosnode info <node>` display [unknown type]?
• Why does `rosnode info <node>` display [unknown type]?
• unresolvable dependency conflict in ros-hydro-desktop ubuntu raring
• unresolvable dependency conflict in ros-hydro-desktop ubuntu raring
• Authorization required when checking-out bullet from kforge.
• Authorization required when checking-out bullet from kforge.
• Unable to locate ros-hydro-desktop-full
• Unable to locate ros-hydro-desktop-full
• how to correctly display a robot in rviz ?
• how to correctly display a robot in rviz ?
• ROS can't access iRobot Create
• ROS can't access iRobot Create
• Visuallizing a set of states in real time.
• Visuallizing a set of states in real time.
• how can I register a Callback when using ros::spinOnce ?
• how can I register a Callback when using ros::spinOnce ?
• How to retrieve the quaternion in (x,y,z,w) format from tf
• How to retrieve the quaternion in (x,y,z,w) format from tf
• ROS as a messaging layer
• ROS as a messaging layer
• How to use serial port in Ros
• How to use serial port in Ros
• Build Farm Output is Difficult to Read
• Build Farm Output is Difficult to Read
• catkin command not found
• catkin command not found
• Rviz 2D estimated pose configuration
• Rviz 2D estimated pose configuration
• ROSCON 2014
• ROSCON 2014
• Difficulty moving from electric to groovy - bullet issues
• Difficulty moving from electric to groovy - bullet issues
• Anyone using the new XBOX One Kinect?
• Anyone using the new XBOX One Kinect?
• Unable to subscribe to [ros-users] mailinglist
• Unable to subscribe to [ros-users] mailinglist
• amcl_omni.launch missing on Hydro (Ubuntu 12.04)
• amcl_omni.launch missing on Hydro (Ubuntu 12.04)
• Why no ROSCON 2013 videos on youtube?
• Why no ROSCON 2013 videos on youtube?
• tf negative time change messages
• tf negative time change messages
• Nodelet multi-threading example
• Nodelet multi-threading example
• Should I use tf or tf2 for broadcasting/receiving transforms?
• Should I use tf or tf2 for broadcasting/receiving transforms?
• Do the default subscription constructors block?
• Do the default subscription constructors block?
• Publishing cloud message of pcl::PointXYZ type
• Publishing cloud message of pcl::PointXYZ type
• How best to write base driver for turtlebot variant with a custum hardware base?
• How best to write base driver for turtlebot variant with a custum hardware base?
• Is it possible measure the relative distance and bearing among robots?
• Is it possible measure the relative distance and bearing among robots?
• TF listening fails when called from a specific class
• TF listening fails when called from a specific class
• Interpreting data from ROS openni_tracker
• Interpreting data from ROS openni_tracker
• [catkin_make] Cmake Error
• [catkin_make] Cmake Error
• Wrong laserscan "mapping" in rvis
• Wrong laserscan "mapping" in rvis
• (How) can a rospy node be reinitialized after ctrl+c?
• (How) can a rospy node be reinitialized after ctrl+c?
• Problems using catkin_make
• Problems using catkin_make
• Verify repository's key
• Verify repository's key
• groovy-devel, hydro-devel, different git branches architecture question
• groovy-devel, hydro-devel, different git branches architecture question
• Generating a default parameter file (.yaml) for a given ROS package
• Generating a default parameter file (.yaml) for a given ROS package
• Problems with converting pose to tf
• Problems with converting pose to tf
• navigation stack SendingSimpleGoals Tutorial
• navigation stack SendingSimpleGoals Tutorial
• Direct Message other people on ROS Answers?
• Direct Message other people on ROS Answers?
• What is the use of tf_listener?
• What is the use of tf_listener?
• Problems compiling nodes using pcl in Ubuntu 11.10
• Problems compiling nodes using pcl in Ubuntu 11.10
• The difference between Spin() and SpinOnce().
• The difference between Spin() and SpinOnce().
• tf impact on perf (tf design)
• tf impact on perf (tf design)
• Same rosdep key for a system dependency and a ROS package
• Same rosdep key for a system dependency and a ROS package
• Indigo on Ubuntu14.04 problem;point 1.3 set up your keys means?
• Indigo on Ubuntu14.04 problem;point 1.3 set up your keys means?
• rospy.Publisher: what's a good choice for queue_size?
• rospy.Publisher: what's a good choice for queue_size?
• Replay rosbags recorded with --split option
• Replay rosbags recorded with --split option
• What command to use to edit a package.xml file in ROS Hydro?
• What command to use to edit a package.xml file in ROS Hydro?
• touch screen?
• touch screen?
• Install catkin from source
• Install catkin from source
• rosservice call syncing service starts
• rosservice call syncing service starts
• Cost for Maintaining the Build Farm
• Cost for Maintaining the Build Farm
• How to solve TF_NAN_INPUT
• How to solve TF_NAN_INPUT
• How to convert a PointCloud via tf2
• How to convert a PointCloud via tf2
• transform broadcaster orientation problem
• transform broadcaster orientation problem
• libopenni-sensor-primesense0 conflict
• libopenni-sensor-primesense0 conflict
• What should be written in catkin_package ?
• What should be written in catkin_package ?
• TF Lookup would require extrapolation into the future
• TF Lookup would require extrapolation into the future
• Change/Update frequency of Rate or Timer
• Change/Update frequency of Rate or Timer
• How to rotate vector by quaternion in python
• How to rotate vector by quaternion in python
• I am Beginner in ROS.My USB camera is running on ROS.please i need a help, how to save an sensor_msgs/Image to a create file?
• I am Beginner in ROS.My USB camera is running on ROS.please i need a help, how to save an sensor_msgs/Image to a create file?
• Replacing /odom topic for turtlebot
• Replacing /odom topic for turtlebot
• ROS Wiki Citation
• ROS Wiki Citation
• about packages and ros distributions
• about packages and ros distributions
• Limit access to topics?
• Limit access to topics?
• How to make Graphical User interfaces in ROS?
• How to make Graphical User interfaces in ROS?
• Any tutorials add a new robot to ROS
• Any tutorials add a new robot to ROS
• How can start contributing to Ros Development
• How can start contributing to Ros Development
• action server not starting
• action server not starting
• Again a Migration Question From TF to TF2
• Again a Migration Question From TF to TF2
• tf2 cannot lookup transform (Lookup would require extrapolation)
• tf2 cannot lookup transform (Lookup would require extrapolation)
• Getting accurate real-time x,y coordinates with gmapping?
• Getting accurate real-time x,y coordinates with gmapping?
• REP 120: not clear about odom and base_footprint
• REP 120: not clear about odom and base_footprint
• tf2, thread, setUsingDedicatedThread, timeout
• tf2, thread, setUsingDedicatedThread, timeout
• Buildfarm doesn't pick up packages' new release repositories after merge
• Buildfarm doesn't pick up packages' new release repositories after merge
• Why do I need the static transform if my urdf is properly defined?
• Why do I need the static transform if my urdf is properly defined?
• Why do I need the static transform if my urdf is properly defined?
• Why do I need the static transform if my urdf is properly defined?
• tf2 convert transform to msg
• tf2 convert transform to msg
• How to save static transforms in bag files?
• How to save static transforms in bag files?
• Multiple launchs in terminal
• Multiple launchs in terminal
• How to Log In To ROS Answers with Google
• How to Log In To ROS Answers with Google
• ROS indigo key server down
• ROS indigo key server down
• tf MUX (or multiple-parents)
• tf MUX (or multiple-parents)
• missing link between urdf and rosserial
• missing link between urdf and rosserial
• compile error with tf transformation
• compile error with tf transformation
• PAUSE/STOP the ros subscriber(callback function) and restart it?
• PAUSE/STOP the ros subscriber(callback function) and restart it?
• Why can't I send "123" via rostopic pub?
• Why can't I send "123" via rostopic pub?
• use cases for tf::MessageFilter::setTolerance
• use cases for tf::MessageFilter::setTolerance
• How to change package name after release?
• How to change package name after release?
• Failed to Fetch While Releasing
• Failed to Fetch While Releasing
• Feasibility of using ROS for commercial products
• Feasibility of using ROS for commercial products
• ROS traffic over gigabit connection is renegotiated to 100 Mbps
• ROS traffic over gigabit connection is renegotiated to 100 Mbps
• bloom; RuntimeError: Two packages have different version numbers
• bloom; RuntimeError: Two packages have different version numbers
• Run tf/tf2 as nodelet
• Run tf/tf2 as nodelet
• ROS Repositories by Organisation
• ROS Repositories by Organisation
• ROS Indigo/Jade on ARM 64 bit?
• ROS Indigo/Jade on ARM 64 bit?
• Calling ros::spin from a new Thread
• Calling ros::spin from a new Thread
• How to use geometry_msgs/Twist.h ?
• How to use geometry_msgs/Twist.h ?
• ros buildfarm for internal projects only
• ros buildfarm for internal projects only
• Is there a max number of edges allowed between two frames in a TF tree?
• Is there a max number of edges allowed between two frames in a TF tree?
• compiling msg
• compiling msg
• RuntimeError: Multiple packages found with the same name "tf2", "tf2_msgs", "tf2_py", "tf2_ros"
• RuntimeError: Multiple packages found with the same name "tf2", "tf2_msgs", "tf2_py", "tf2_ros"
• Bug: Mesh file path in URDF. Cannot locate resource file://
• Bug: Mesh file path in URDF. Cannot locate resource file://
• TF_OLD_DATA ignoring data from the past for frame odom
• TF_OLD_DATA ignoring data from the past for frame odom
• github access to ros_comm broken?
• github access to ros_comm broken?
• tf transformPoint() equivalent on tf2?
• tf transformPoint() equivalent on tf2?
• Is it possible to reuse the tf::TransformBroadcaster
• Is it possible to reuse the tf::TransformBroadcaster
• Docker images for armhf
• Docker images for armhf
• rosbag randomly missing topics on record
• rosbag randomly missing topics on record
• I'm doing a turtlebot-based project: should I just install indigo?
• I'm doing a turtlebot-based project: should I just install indigo?
• tf2 - where's quaternion_from_euler gone?
• tf2 - where's quaternion_from_euler gone?
• Stop Rosbag subprocess
• Stop Rosbag subprocess
• Why ROS generates core packages with same name in both lib and lib64?
• Why ROS generates core packages with same name in both lib and lib64?
• How to RUN rosdep init and update in Dockerfile
• How to RUN rosdep init and update in Dockerfile
• Rosdep - how to define dependency management on custom package?
• Rosdep - how to define dependency management on custom package?
• Why does ROS_HOSTNAME overwrite (parts of) ROS_MASTER_URI?
• Why does ROS_HOSTNAME overwrite (parts of) ROS_MASTER_URI?
• Install rosdep definition locally in a package
• Install rosdep definition locally in a package
• Navigation stack never reach goal
• Navigation stack never reach goal
• What is the time complexity tf2 core library
• What is the time complexity tf2 core library
• What is the correct process for adding/editing rosdep keys?
• What is the correct process for adding/editing rosdep keys?
• Why ROS messages do not inherit from a base class??
• Why ROS messages do not inherit from a base class??
• Command line parameter to change gmapping resolution
• Command line parameter to change gmapping resolution
• Ubuntu 12.04 on beaglebone ¿hard float or soft float?
• Ubuntu 12.04 on beaglebone ¿hard float or soft float?
• specifying tcp port range for nodes
• specifying tcp port range for nodes
• Mocking in ROS?
• Mocking in ROS?
• tf interpolation
• tf interpolation
• How long does the wiki take to create package pages?
• How long does the wiki take to create package pages?
• Rosdep update traceback?
• Rosdep update traceback?
• How to connect VLP-16 velodyne to indigo?
• How to connect VLP-16 velodyne to indigo?
• What is the status of stacks versus packages versus metapackages?
• What is the status of stacks versus packages versus metapackages?
• Rostopic Hz inaccurate?
• Rostopic Hz inaccurate?
• Is this a normal latency for ROS with Turtlebot?
• Is this a normal latency for ROS with Turtlebot?
• tf rotation before translation?
• tf rotation before translation?
• Debian 8 Kinetic no packages can be located
• Debian 8 Kinetic no packages can be located
• Can static IP communicate with floating IP?
• Can static IP communicate with floating IP?
• Best practices for tf?
• Best practices for tf?
• stdout to stdin pipe using launch-prefix?
• stdout to stdin pipe using launch-prefix?
• From Laserscan to obstacle avoidance
• From Laserscan to obstacle avoidance
• TF doesn't work even though it's in the tf_tree
• TF doesn't work even though it's in the tf_tree
• ROS Kinetic Installation- Key not imported
• ROS Kinetic Installation- Key not imported
• The Leddar sensor ROS package from GitHub cannot work
• The Leddar sensor ROS package from GitHub cannot work
• How to check that two topics are synced?
• How to check that two topics are synced?
• ROS documentation link redirects to wrong URL
• ROS documentation link redirects to wrong URL
• choosing and viewing projects guidance
• choosing and viewing projects guidance
• GUI based control in ROS
• GUI based control in ROS
• Error running catkin_make with tf2_geometry_msgs
• Error running catkin_make with tf2_geometry_msgs
• Bloom with Pip Test Depend
• Bloom with Pip Test Depend
• How to totally reset ROS
• How to totally reset ROS
• I can't use rviz in host PC
• I can't use rviz in host PC
• Common-used packages for robot control
• Common-used packages for robot control
• Is it possible to remove rosdep
• Is it possible to remove rosdep
• Is it necessary to using Callback function when I subscribe?
• Is it necessary to using Callback function when I subscribe?
• should i ignore warnings
• should i ignore warnings
• Installing turtlebot on ROS kinetic
• Installing turtlebot on ROS kinetic
• tf message type error
• tf message type error
• tf error: Lookup would require extrapolation into the past
• tf error: Lookup would require extrapolation into the past
• Jenkins error package directory 'src/scratch4robots' does not exist
• Jenkins error package directory 'src/scratch4robots' does not exist
• Sync problems between ROS and Gazebo
• Sync problems between ROS and Gazebo
• How can I access all static TF2 transforms?
• How can I access all static TF2 transforms?
• ROSWTF "unexpectedly connected" message and creation of new nodes
• ROSWTF "unexpectedly connected" message and creation of new nodes
• Are there robots or hardware that are not able to be "ROSified"?
• Are there robots or hardware that are not able to be "ROSified"?
• how are threads used to service callbacks in nodelets?
• how are threads used to service callbacks in nodelets?
• What is the purpose of the architecture_independent tag?
• What is the purpose of the architecture_independent tag?
• How to make roscd go to ~/catkin_ws/devel instead of /opt/ros/kinetic?
• How to make roscd go to ~/catkin_ws/devel instead of /opt/ros/kinetic?
• rosdep to work with sources instead of binaries
• rosdep to work with sources instead of binaries
• Static tf2 transform returns correct position but opposite quaternion
• Static tf2 transform returns correct position but opposite quaternion
• Store ROS messages in file ?
• Store ROS messages in file ?
• bloom 'Release Tag' mapping
• bloom 'Release Tag' mapping
• Duplicate tf tree operations offline in C++?
• Duplicate tf tree operations offline in C++?
• Undefined reference to tf2::fromMsg
• Undefined reference to tf2::fromMsg
• Possible alternatives to ROS tf2
• Possible alternatives to ROS tf2
• Package installation confusion
• Package installation confusion
• How to build release version of ROS node
• How to build release version of ROS node
• Is it safe and efficient for several threads to share a single tf::TransformListener object?
• Is it safe and efficient for several threads to share a single tf::TransformListener object?
• ROS2 Debugging Techniques
• ROS2 Debugging Techniques
• Implementation of 1873-2015 - IEEE Standard for Robot Map Data Representation for Navigation
• Implementation of 1873-2015 - IEEE Standard for Robot Map Data Representation for Navigation
• tf broadcasting rate
• tf broadcasting rate
• Replacement for rospy.time.now() in ROS2?
• Replacement for rospy.time.now() in ROS2?
• Unable to install ROS Melodic on Ubuntu 19.04
• Unable to install ROS Melodic on Ubuntu 19.04
• Slow observation buffer update warnings in move_base
• Slow observation buffer update warnings in move_base
• About /world frame
• About /world frame
• CMake Error while installing ROS2 packages with colcon
• CMake Error while installing ROS2 packages with colcon
• Minimal ROS2 Installation
• Minimal ROS2 Installation
• catkin_create_pkg error
• catkin_create_pkg error
• Import python script to different ROS2 package
• Import python script to different ROS2 package
• [ROS2] Is it possible to listen and subscribe to newly created topic in C++?
• [ROS2] Is it possible to listen and subscribe to newly created topic in C++?
• Cannot compile a msg file
• Cannot compile a msg file
• Time travel with tf - tutorial - confusing target and source frames
• Time travel with tf - tutorial - confusing target and source frames
• bloom: Generate debian package with pip-only dependency?
• bloom: Generate debian package with pip-only dependency?
• [ROS2] msg stamp time difference
• [ROS2] msg stamp time difference
• How to implement velocity transformation?
• How to implement velocity transformation?
• subscription callback types ROS1 vs. ROS2
• subscription callback types ROS1 vs. ROS2
• rosrun can't open my video (ROS OpenCV)
• rosrun can't open my video (ROS OpenCV)
• How do I specify a ROSDep dependency that is in PyPI but not rosdistro?
• How do I specify a ROSDep dependency that is in PyPI but not rosdistro?
• TF_OLD_DATA error when I publish a new topic.
• TF_OLD_DATA error when I publish a new topic.
• No module named '_tf2'
• No module named '_tf2'
• roslaunch Unable to contact my own server
• roslaunch Unable to contact my own server
• colcon silently does nothing
• colcon silently does nothing
• What is the equivalent documentation for datatype transforms for tf2?
• What is the equivalent documentation for datatype transforms for tf2?
• How do I deploy a rosdep mirror?
• How do I deploy a rosdep mirror?
• Vibrating point cloud in rviz.
• Vibrating point cloud in rviz.
• `tf static_transform_publisher` removes link instead of linking two tf trees
• `tf static_transform_publisher` removes link instead of linking two tf trees
• Difference in CPU% between static_transform_publisher and tf::TransformBroadcaster?
• Difference in CPU% between static_transform_publisher and tf::TransformBroadcaster?
• error in rosdep initialization
• error in rosdep initialization
• What is the workflow to prevent mixing python2.7 and python3 for tf2?
• What is the workflow to prevent mixing python2.7 and python3 for tf2?
• TF2 ConnectivityException With Connected TF Tree
• TF2 ConnectivityException With Connected TF Tree
• How can generate a list of dependencies from the src folder of a workspace?
• How can generate a list of dependencies from the src folder of a workspace?
• Undefined symbol error when using tf2_ros::BufferInterface::transform
• Undefined symbol error when using tf2_ros::BufferInterface::transform
• Why does ROS use macros for logs?
• Why does ROS use macros for logs?
• Ros2 Stopwatch
• Ros2 Stopwatch
• roscore does not initialize
• roscore does not initialize
• Where is roscore in ROS2?
• Where is roscore in ROS2?
• Are zero-copy services possible (nodelet + rosservice)?
• Are zero-copy services possible (nodelet + rosservice)?
• Deprecate ROS Message
• Deprecate ROS Message
• Can nodes from different ROS 2 distributions communicate compatibly?
• Can nodes from different ROS 2 distributions communicate compatibly?
• ROS on 32bit system
• ROS on 32bit system
• tf2 tutorial writing broadcaster -- compile error
• tf2 tutorial writing broadcaster -- compile error
• tf2_ros::Buffer.transform() missing timestamp
• tf2_ros::Buffer.transform() missing timestamp
• Move_base goals in 'base_link' for Turtlebot
• Move_base goals in 'base_link' for Turtlebot
• Warning "Map update loop missed its desired rate" keeps on comming
• Warning "Map update loop missed its desired rate" keeps on comming
• ROS2 ROS_ERROR_STREAM equivalent
• ROS2 ROS_ERROR_STREAM equivalent
• rosdep get list of packages for dependencies
• rosdep get list of packages for dependencies
• How to detect obstacle position using point cloud data?
• How to detect obstacle position using point cloud data?
• How to show topics using python in ROS2
• How to show topics using python in ROS2
• Is it possible to launch a node on another computer from my computer?
• Is it possible to launch a node on another computer from my computer?
• rosrun tf2_tools not found
• rosrun tf2_tools not found
• Use of --symlink-install
• Use of --symlink-install
• Why would I want to transform a Pose in Frame A using a Transform From B to C?
• Why would I want to transform a Pose in Frame A using a Transform From B to C?
• generating versioned rosinstall file from currnt workspace
• generating versioned rosinstall file from currnt workspace
• Can a ROS 2 TF buffer be queried in time-critical code?
• Can a ROS 2 TF buffer be queried in time-critical code?
• Extrapolation exception error (tiny time difference)
• Extrapolation exception error (tiny time difference)
• 3D Obstacles "forgotten" if there is a gap between 3d camera FoV and the robot base
• 3D Obstacles "forgotten" if there is a gap between 3d camera FoV and the robot base
• Time synchronization approaches
• Time synchronization approaches
• Using tf2 in ROS2 with pure C?
• Using tf2 in ROS2 with pure C?
• direction of arrows in TF explanations
• direction of arrows in TF explanations
• Signifiance of fixed_frame parameter in lookupTransform function
• Signifiance of fixed_frame parameter in lookupTransform function
• How to contribute to ROS2 as UI,UX designer?
• How to contribute to ROS2 as UI,UX designer?
• Child to parent tf2 transform (c++)
• Child to parent tf2 transform (c++)
• Why does TF use strictly a tree?
• Why does TF use strictly a tree?
• Tf frequency is too large
• Tf frequency is too large
• Two index.yaml files
• Two index.yaml files
• roslaunch exit code 2 error
• roslaunch exit code 2 error
• RVIZ trace robot path
• RVIZ trace robot path
• Is there a Node for general data frame transforms?
• Is there a Node for general data frame transforms?
• Why cant initialize tf2_ros::TransformListenter in hydro?
• Why cant initialize tf2_ros::TransformListenter in hydro?
• Test Framework in ROS2: state of practice as in 2020?
• Test Framework in ROS2: state of practice as in 2020?
• twist message: angular velocity unit
• twist message: angular velocity unit
• Can't init rosdep
• Can't init rosdep
• Change topic on pcd_to_pointcloud
• Change topic on pcd_to_pointcloud
• Give just the application ROS without the code (src)
• Give just the application ROS without the code (src)
• Python nodes and re-usable modules
• Python nodes and re-usable modules
• Custom rosdep.yaml in my package
• Custom rosdep.yaml in my package
• How to use ament_lint to validate ROS2 package
• How to use ament_lint to validate ROS2 package
• tf2::fromMsg cause "Undefined reference"
• tf2::fromMsg cause "Undefined reference"
• bloom: How to release a single package from a multi-package repo?
• bloom: How to release a single package from a multi-package repo?
• TF vs TF2 (lookupTwist vs lookup_transform)
• TF vs TF2 (lookupTwist vs lookup_transform)
• rviz ignoring transforms
• rviz ignoring transforms
• invalid message type
• invalid message type
• Bridging ROS2 node and NON-ROS based applications on DDS
• Bridging ROS2 node and NON-ROS based applications on DDS
• Is it possible to publish msg in rospy.on_shutdown
• Is it possible to publish msg in rospy.on_shutdown
• how to understand image topic frame orientation?
• how to understand image topic frame orientation?
• ROS in academia
• ROS in academia
• the same msg type of multiple topic names can use only one callback on ros2?
• the same msg type of multiple topic names can use only one callback on ros2?
• inverse transform
• inverse transform
• How to use transformPose in Python with Time(0) (most recent common time)?
• How to use transformPose in Python with Time(0) (most recent common time)?
• How to get the position of tf frame
• How to get the position of tf frame
• How can I set a node name when using composing nodes with rclcpp?
• How can I set a node name when using composing nodes with rclcpp?
• colcon build - number of threads
• colcon build - number of threads
• When is new package available on the ros2 build farm?
• When is new package available on the ros2 build farm?

● Teacher   × 2

• Build Architecture Question
• Build Architecture Question

● Enlightened   × 2

• When should one use answers.ros.org vs. the ros-users mailing list?
• When should one use answers.ros.org vs. the ros-users mailing list?

● Good Answer   × 452

• When should one use answers.ros.org vs. the ros-users mailing list?
• When should one use answers.ros.org vs. the ros-users mailing list?
• How do I get Karma?
• How do I get Karma?
• How can I get a unique device path for my Arduino/FTDI device
• How can I get a unique device path for my Arduino/FTDI device
• Corrected Odometry from GMapping / Karto?
• Corrected Odometry from GMapping / Karto?
• sharing code on Answers.ros.org
• sharing code on Answers.ros.org
• Build Architecture Question
• Build Architecture Question
• ROS Packages vs. Linux Packages
• ROS Packages vs. Linux Packages
• What is a ROS package?
• What is a ROS package?
• What is the tf threading model?
• What is the tf threading model?
• What are 'bond' topics for?
• What are 'bond' topics for?
• is ros client c++ code thread safe?
• is ros client c++ code thread safe?
• How do I test the ROS version in C++ code?
• How do I test the ROS version in C++ code?
• Multiple Kinects: Same Topics from different nodes, how to subscribe?
• Multiple Kinects: Same Topics from different nodes, how to subscribe?
• openni_node internal throttle to limit cpu usage
• openni_node internal throttle to limit cpu usage
• Error assigning a python quaternion
• Error assigning a python quaternion
• rxplot for vector like types
• rxplot for vector like types
• Is there a command line utility to list available nodelets within the package path?
• Is there a command line utility to list available nodelets within the package path?
• Is it better/prefered to combine nodelets programmatically or in a launch file?
• Is it better/prefered to combine nodelets programmatically or in a launch file?
• how do I publish a new ros node or package?
• how do I publish a new ros node or package?
• how to programmatically add/remove displays in rviz
• how to programmatically add/remove displays in rviz
• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• how can I modify the value of a transform when playing back a bag file?
• how can I modify the value of a transform when playing back a bag file?
• Editing Answers on answers.ros.org
• Editing Answers on answers.ros.org
• How to run ROS on beagleboard effectively?
• How to run ROS on beagleboard effectively?
• what might cause the shoulder_lift_joint not to go all the way up?
• what might cause the shoulder_lift_joint not to go all the way up?
• Email Notifications on Interesting Questions
• Email Notifications on Interesting Questions
• upgrade to ubuntu natty 11.04, or wait?
• upgrade to ubuntu natty 11.04, or wait?
• Do subscribers work on a FIFO queue?
• Do subscribers work on a FIFO queue?
• What is the difference between geometry and tf quaternions?
• What is the difference between geometry and tf quaternions?
• How does cloud_to_laserscan.cpp work
• How does cloud_to_laserscan.cpp work
• what hardware drivers does ROS provide?
• what hardware drivers does ROS provide?
• Does turtlebot works on Kubuntu?
• Does turtlebot works on Kubuntu?
• ROS electric on UBUNTU Netbook 10.04
• ROS electric on UBUNTU Netbook 10.04
• Is ROS able to cancel the limit of karma to upload pictures?
• Is ROS able to cancel the limit of karma to upload pictures?
• Best PC architecture to run Turtlebot
• Best PC architecture to run Turtlebot
• No debugging symbols found in base_local_planner library
• No debugging symbols found in base_local_planner library
• Plans for pluginlib for Python
• Plans for pluginlib for Python
• "Installing and Configuring Your ROS Environment" -bash: /opt/ros/electric/setup.bash: No such file or directory
• "Installing and Configuring Your ROS Environment" -bash: /opt/ros/electric/setup.bash: No such file or directory
• installing ros diamondback on ubuntu 11.10 oneiric ocelot
• installing ros diamondback on ubuntu 11.10 oneiric ocelot
• Angles for quaternion converter
• Angles for quaternion converter
• Electric Turtle install fails on ARM, Ubuntu 11.04
• Electric Turtle install fails on ARM, Ubuntu 11.04
• How to edit a package listing.
• How to edit a package listing.
• How do I add a new stereo or monocular camera to ROS?
• How do I add a new stereo or monocular camera to ROS?
• How do you upgrade pcl to the current release?
• How do you upgrade pcl to the current release?
• Ubuntu Oneiric Install Fails
• Ubuntu Oneiric Install Fails
• Separate ROS android library
• Separate ROS android library
• boost::filesystem version issues
• boost::filesystem version issues
• problem installing ros in fedora 13
• problem installing ros in fedora 13
• Download a package with rosmake
• Download a package with rosmake
• How to setup pointcloud_to_laserscan?
• How to setup pointcloud_to_laserscan?
• KeyError: '10' when running rosdep install on Linux Mint 10 machine
• KeyError: '10' when running rosdep install on Linux Mint 10 machine
• Is there a minimum laptop specification for the TurtleBot?
• Is there a minimum laptop specification for the TurtleBot?
• Why don't frame_ids use ROS namespaces?
• Why don't frame_ids use ROS namespaces?
• RGBDSLAM with ROS electric on Linux Mint 12
• RGBDSLAM with ROS electric on Linux Mint 12
• PCL include files
• PCL include files
• ROS Background
• ROS Background
• subscriber queue length
• subscriber queue length
• Why is Twist message without timestamp
• Why is Twist message without timestamp
• gazebo supported graphics card
• gazebo supported graphics card
• What are the best practices for tagging questions?
• What are the best practices for tagging questions?
• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• What packages provide visual odometry?
• What packages provide visual odometry?
• ROS Diamondback on Ubuntu 64 bit
• ROS Diamondback on Ubuntu 64 bit
• BSD license questions
• BSD license questions
• How to tell which version of a package was tagged for a particular release?
• How to tell which version of a package was tagged for a particular release?
• ROS Backwards Compatibility in Distributed System
• ROS Backwards Compatibility in Distributed System
• Compiling ROS with boost >1.41
• Compiling ROS with boost >1.41
• Is there a way to merge bag files?
• Is there a way to merge bag files?
• tf extrapolation exception using ros::Time(0)
• tf extrapolation exception using ros::Time(0)
• pcl bag_to_pcd
• pcl bag_to_pcd
• trajectory error in simulation / controller parameters
• trajectory error in simulation / controller parameters
• TF on multiple robots gets crowded
• TF on multiple robots gets crowded
• Fixed target frame for transformLaserScanToPointCloud?
• Fixed target frame for transformLaserScanToPointCloud?
• Trigger code segments for ROS_DEBUG only
• Trigger code segments for ROS_DEBUG only
• Converting SolidWorks STL files into urdf file
• Converting SolidWorks STL files into urdf file
• Order of published/subscribed messages
• Order of published/subscribed messages
• ROS + Lego NXT + Kinect?
• ROS + Lego NXT + Kinect?
• How do I run the 'openni_tracker'
• How do I run the 'openni_tracker'
• Twist message coordinate system convention
• Twist message coordinate system convention
• How to get publisher info from a message?
• How to get publisher info from a message?
• I can not launch the sample code
• I can not launch the sample code
• groovy openni 1.5.4 upgrade error
• groovy openni 1.5.4 upgrade error
• who is heading the development of ROS?
• who is heading the development of ROS?
• Why is tutorial code isolated from the package code?
• Why is tutorial code isolated from the package code?
• Gathering Wheel Encoder data and publishing on the /odom topic
• Gathering Wheel Encoder data and publishing on the /odom topic
• How can I get rosmake to print warnings.
• How can I get rosmake to print warnings.
• catkin migration from rosbuild package does not mention Makefile
• catkin migration from rosbuild package does not mention Makefile
• Heterogeneous Robot Communication Over ROS Framework
• Heterogeneous Robot Communication Over ROS Framework
• Turtlebot2 power for laptop
• Turtlebot2 power for laptop
• Matrix multiplication in ROS CPP
• Matrix multiplication in ROS CPP
• usb_cam: VIDIOC_S_FMT error 22
• usb_cam: VIDIOC_S_FMT error 22
• Recommended system for complex ROS programs + simulations
• Recommended system for complex ROS programs + simulations
• Disabling boost for a custom package
• Disabling boost for a custom package
• ROS libraries
• ROS libraries
• service exception using tf listener in rospy
• service exception using tf listener in rospy
• Is anyone else thinking about wrapping the leap for ROS?
• Is anyone else thinking about wrapping the leap for ROS?
• Why is ROS ANSWERS forum so easily exploitable?
• Why is ROS ANSWERS forum so easily exploitable?
• Where are the ROS Hydro stacks installed?
• Where are the ROS Hydro stacks installed?
• ros::Time doesn't update in variable
• ros::Time doesn't update in variable
• What is this rosdep error?
• What is this rosdep error?
• is there a python equivalent of fromROSMsg/toROSMsg (pcl stack)
• is there a python equivalent of fromROSMsg/toROSMsg (pcl stack)
• unresolvable dependency conflict in ros-hydro-desktop ubuntu raring
• unresolvable dependency conflict in ros-hydro-desktop ubuntu raring
• how to correctly display a robot in rviz ?
• how to correctly display a robot in rviz ?
• What is the difference between tf and tf2?
• What is the difference between tf and tf2?
• ROS as a messaging layer
• ROS as a messaging layer
• catkin command not found
• catkin command not found
• Unable to subscribe to [ros-users] mailinglist
• Unable to subscribe to [ros-users] mailinglist
• Why no ROSCON 2013 videos on youtube?
• Why no ROSCON 2013 videos on youtube?
• ROSCON 2014
• ROSCON 2014
• tf::TransformListener lookupTransform time error
• tf::TransformListener lookupTransform time error
• TF listening fails when called from a specific class
• TF listening fails when called from a specific class
• Why can't catkin depend on rosbuild?
• Why can't catkin depend on rosbuild?
• Direct Message other people on ROS Answers?
• Direct Message other people on ROS Answers?
• What is the use of tf_listener?
• What is the use of tf_listener?
• How to play rosbag using launch file ?
• How to play rosbag using launch file ?
• How to retrieve the quaternion in (x,y,z,w) format from tf
• How to retrieve the quaternion in (x,y,z,w) format from tf
• The difference between Spin() and SpinOnce().
• The difference between Spin() and SpinOnce().
• tf impact on perf (tf design)
• tf impact on perf (tf design)
• Catkin conversion: /usr/bin/ld: cannot find -lPACKAGE_NAME
• Catkin conversion: /usr/bin/ld: cannot find -lPACKAGE_NAME
• Replay rosbags recorded with --split option
• Replay rosbags recorded with --split option
• Is it possible to remap topics at runtime?
• Is it possible to remap topics at runtime?
• Unable to locate ros-hydro-desktop-full
• Unable to locate ros-hydro-desktop-full
• Cost for Maintaining the Build Farm
• Cost for Maintaining the Build Farm
• What should be written in catkin_package ?
• What should be written in catkin_package ?
• ROS Wiki Citation
• ROS Wiki Citation
• Any tutorials add a new robot to ROS
• Any tutorials add a new robot to ROS
• Again a Migration Question From TF to TF2
• Again a Migration Question From TF to TF2
• REP 120: not clear about odom and base_footprint
• REP 120: not clear about odom and base_footprint
• TF Lookup would require extrapolation into the future
• TF Lookup would require extrapolation into the future
• How to use serial port in Ros
• How to use serial port in Ros
• How to save static transforms in bag files?
• How to save static transforms in bag files?
• Multiple launchs in terminal
• Multiple launchs in terminal
• tf2 cannot lookup transform (Lookup would require extrapolation)
• tf2 cannot lookup transform (Lookup would require extrapolation)
• How to rotate vector by quaternion in python
• How to rotate vector by quaternion in python
• What command to use to edit a package.xml file in ROS Hydro?
• What command to use to edit a package.xml file in ROS Hydro?
• ROS indigo key server down
• ROS indigo key server down
• Why can't I send "123" via rostopic pub?
• Why can't I send "123" via rostopic pub?
• rospy.Publisher: what's a good choice for queue_size?
• rospy.Publisher: what's a good choice for queue_size?
• PAUSE/STOP the ros subscriber(callback function) and restart it?
• PAUSE/STOP the ros subscriber(callback function) and restart it?
• What's the meaning of global in getGlobalCallbackQueue()?
• What's the meaning of global in getGlobalCallbackQueue()?
• Install ROS dependencies from apt?
• Install ROS dependencies from apt?
• how to communicate the hardware to a realtime controller
• how to communicate the hardware to a realtime controller
• Is an IMU required to run Turtlebot stack?
• Is an IMU required to run Turtlebot stack?
• Run tf/tf2 as nodelet
• Run tf/tf2 as nodelet
• Why do I need the static transform if my urdf is properly defined?
• Why do I need the static transform if my urdf is properly defined?
• tf MUX (or multiple-parents)
• tf MUX (or multiple-parents)
• tf MUX (or multiple-parents)
• tf MUX (or multiple-parents)
• Feasibility of using ROS for commercial products
• Feasibility of using ROS for commercial products
• RuntimeError: Multiple packages found with the same name "tf2", "tf2_msgs", "tf2_py", "tf2_ros"
• RuntimeError: Multiple packages found with the same name "tf2", "tf2_msgs", "tf2_py", "tf2_ros"
• How can start contributing to Ros Development
• How can start contributing to Ros Development
• bloom; RuntimeError: Two packages have different version numbers
• bloom; RuntimeError: Two packages have different version numbers
• How to use geometry_msgs/Twist.h ?
• How to use geometry_msgs/Twist.h ?
• Sound localization with Kinect and ROS?
• Sound localization with Kinect and ROS?
• Calculating velocity from tf
• Calculating velocity from tf
• Calculating velocity from tf
• Calculating velocity from tf
• What is tf2?
• What is tf2?
• about packages and ros distributions
• about packages and ros distributions
• Why does ROS_HOSTNAME overwrite (parts of) ROS_MASTER_URI?
• Why does ROS_HOSTNAME overwrite (parts of) ROS_MASTER_URI?
• ODE from Gazebo and ROS
• ODE from Gazebo and ROS
• tf transformPoint() equivalent on tf2?
• tf transformPoint() equivalent on tf2?
• tf2 - where's quaternion_from_euler gone?
• tf2 - where's quaternion_from_euler gone?
• can multiple instances of gazebo and/or roscore run in parallel
• can multiple instances of gazebo and/or roscore run in parallel
• static_transform_publisher negative average delay
• static_transform_publisher negative average delay
• Navigation stack never reach goal
• Navigation stack never reach goal
• using tf data from bag files
• using tf data from bag files
• roscpp message callback threading?
• roscpp message callback threading?
• Best practices for tf?
• Best practices for tf?
• How to catch nodelet shutdown signal?
• How to catch nodelet shutdown signal?
• ROS msgs not received if publisher starts after subscriber
• ROS msgs not received if publisher starts after subscriber
• Why ROS messages do not inherit from a base class??
• Why ROS messages do not inherit from a base class??
• How to connect VLP-16 velodyne to indigo?
• How to connect VLP-16 velodyne to indigo?
• Problems with converting pose to tf
• Problems with converting pose to tf
• should i ignore warnings
• should i ignore warnings
• Sync problems between ROS and Gazebo
• Sync problems between ROS and Gazebo
• tf rotation before translation?
• tf rotation before translation?
• Change/Update frequency of Rate or Timer
• Change/Update frequency of Rate or Timer
• How to solve TF_NAN_INPUT
• How to solve TF_NAN_INPUT
• Static tf2 transform returns correct position but opposite quaternion
• Static tf2 transform returns correct position but opposite quaternion
• Getting accurate real-time x,y coordinates with gmapping?
• Getting accurate real-time x,y coordinates with gmapping?
• TF_OLD_DATA ignoring data from the past for frame odom
• TF_OLD_DATA ignoring data from the past for frame odom
• How can I access all static TF2 transforms?
• How can I access all static TF2 transforms?
• Rostopic Hz inaccurate?
• Rostopic Hz inaccurate?
• Is it safe and efficient for several threads to share a single tf::TransformListener object?
• Is it safe and efficient for several threads to share a single tf::TransformListener object?
• how are threads used to service callbacks in nodelets?
• how are threads used to service callbacks in nodelets?
• Implementation of 1873-2015 - IEEE Standard for Robot Map Data Representation for Navigation
• Implementation of 1873-2015 - IEEE Standard for Robot Map Data Representation for Navigation
• How to totally reset ROS
• How to totally reset ROS
• nodelet doesn't start
• nodelet doesn't start
• tf2 convert transform to msg
• tf2 convert transform to msg
• [ROS2] msg stamp time difference
• [ROS2] msg stamp time difference
• Replacement for rospy.time.now() in ROS2?
• Replacement for rospy.time.now() in ROS2?
• subscription callback types ROS1 vs. ROS2
• subscription callback types ROS1 vs. ROS2
• Unable to install ROS Melodic on Ubuntu 19.04
• Unable to install ROS Melodic on Ubuntu 19.04
• How do I specify a ROSDep dependency that is in PyPI but not rosdistro?
• How do I specify a ROSDep dependency that is in PyPI but not rosdistro?
• TF_OLD_DATA error when I publish a new topic.
• TF_OLD_DATA error when I publish a new topic.
• What is the equivalent documentation for datatype transforms for tf2?
• What is the equivalent documentation for datatype transforms for tf2?
• How to build release version of ROS node
• How to build release version of ROS node
• What is the status of stacks versus packages versus metapackages?
• What is the status of stacks versus packages versus metapackages?
• How to make roscd go to ~/catkin_ws/devel instead of /opt/ros/kinetic?
• How to make roscd go to ~/catkin_ws/devel instead of /opt/ros/kinetic?
• rosbag file cannot be made // .bag.active
• rosbag file cannot be made // .bag.active
• catkin_create_pkg error
• catkin_create_pkg error
• specifying tcp port range for nodes
• specifying tcp port range for nodes
• CMake Error while installing ROS2 packages with colcon
• CMake Error while installing ROS2 packages with colcon
• How long does the wiki take to create package pages?
• How long does the wiki take to create package pages?
• ImportError: No module named yaml
• ImportError: No module named yaml
• Mocking in ROS?
• Mocking in ROS?
• Duplicate tf tree operations offline in C++?
• Duplicate tf tree operations offline in C++?
• Warning "Map update loop missed its desired rate" keeps on comming
• Warning "Map update loop missed its desired rate" keeps on comming
• About /world frame
• About /world frame
• Undefined symbol error when using tf2_ros::BufferInterface::transform
• Undefined symbol error when using tf2_ros::BufferInterface::transform
• How to show topics using python in ROS2
• How to show topics using python in ROS2
• ROS2 Debugging Techniques
• ROS2 Debugging Techniques
• Publishing cloud message of pcl::PointXYZ type
• Publishing cloud message of pcl::PointXYZ type
• How to RUN rosdep init and update in Dockerfile
• How to RUN rosdep init and update in Dockerfile
• Child to parent tf2 transform (c++)
• Child to parent tf2 transform (c++)
• roslaunch exit code 2 error
• roslaunch exit code 2 error
• How to make Graphical User interfaces in ROS?
• How to make Graphical User interfaces in ROS?
• Error running catkin_make with tf2_geometry_msgs
• Error running catkin_make with tf2_geometry_msgs
• Time synchronization approaches
• Time synchronization approaches
• Use of --symlink-install
• Use of --symlink-install
• Can nodes from different ROS 2 distributions communicate compatibly?
• Can nodes from different ROS 2 distributions communicate compatibly?
• Minimal ROS2 Installation
• Minimal ROS2 Installation
• TF2 ConnectivityException With Connected TF Tree
• TF2 ConnectivityException With Connected TF Tree
• Is it possible to launch a node on another computer from my computer?
• Is it possible to launch a node on another computer from my computer?
• How to get the position of tf frame
• How to get the position of tf frame
• [ROS2] Is it possible to listen and subscribe to newly created topic in C++?
• [ROS2] Is it possible to listen and subscribe to newly created topic in C++?
• colcon build - number of threads
• colcon build - number of threads

● Guru   × 56

• When should one use answers.ros.org vs. the ros-users mailing list?
• sharing code on Answers.ros.org
• How can I get a unique device path for my Arduino/FTDI device
• Error assigning a python quaternion
• What are 'bond' topics for?
• ROS Packages vs. Linux Packages
• Is there a command line utility to list available nodelets within the package path?
• what are quaternions and how can I use them?
• How do I test the ROS version in C++ code?
• How to run ROS on beagleboard effectively?
• What is the difference between geometry and tf quaternions?
• What is a ROS package?
• Best PC architecture to run Turtlebot
• Email Notifications on Interesting Questions
• what hardware drivers does ROS provide?
• rxplot for vector like types
• How do I get Karma?
• What are the best practices for tagging questions?
• What is the tf threading model?
• Subscriber and Publisher node at once in cpp
• BSD license questions
• tf impact on perf (tf design)
• Replay rosbags recorded with --split option
• tf::TransformListener lookupTransform time error
• ros::Time doesn't update in variable
• rospy.Publisher: what's a good choice for queue_size?
• Gathering Wheel Encoder data and publishing on the /odom topic
• usb_cam: VIDIOC_S_FMT error 22
• How to save static transforms in bag files?
• Install ROS dependencies from apt?
• Calculating velocity from tf
• ROS libraries
• Why is ROS ANSWERS forum so easily exploitable?
• ROS indigo key server down
• I can not launch the sample code
• Is ROS able to cancel the limit of karma to upload pictures?
• What is the difference between tf and tf2?
• Why is Twist message without timestamp
• tf extrapolation exception using ros::Time(0)
• Catkin conversion: /usr/bin/ld: cannot find -lPACKAGE_NAME
• How to get publisher info from a message?
• TF Lookup would require extrapolation into the future
• How do you upgrade pcl to the current release?
• tf transformPoint() equivalent on tf2?
• TF_OLD_DATA ignoring data from the past for frame odom
• subscriber queue length
• Why can't I send "123" via rostopic pub?
• Is there a way to merge bag files?
• Replacement for rospy.time.now() in ROS2?
• Is it safe and efficient for several threads to share a single tf::TransformListener object?
• What should be written in catkin_package ?
• Is it possible to remap topics at runtime?
• [ROS2] msg stamp time difference
• subscription callback types ROS1 vs. ROS2
• The difference between Spin() and SpinOnce().
• How to build release version of ROS node

● Great Answer   × 120

• When should one use answers.ros.org vs. the ros-users mailing list?
• When should one use answers.ros.org vs. the ros-users mailing list?
• sharing code on Answers.ros.org
• sharing code on Answers.ros.org
• How can I get a unique device path for my Arduino/FTDI device
• How can I get a unique device path for my Arduino/FTDI device
• Error assigning a python quaternion
• Error assigning a python quaternion
• What are 'bond' topics for?
• What are 'bond' topics for?
• ROS Packages vs. Linux Packages
• ROS Packages vs. Linux Packages
• Is there a command line utility to list available nodelets within the package path?
• Is there a command line utility to list available nodelets within the package path?
• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• How do I test the ROS version in C++ code?
• How do I test the ROS version in C++ code?
• How to run ROS on beagleboard effectively?
• How to run ROS on beagleboard effectively?
• What is the difference between geometry and tf quaternions?
• What is the difference between geometry and tf quaternions?
• What is a ROS package?
• What is a ROS package?
• Best PC architecture to run Turtlebot
• Best PC architecture to run Turtlebot
• Email Notifications on Interesting Questions
• Email Notifications on Interesting Questions
• what hardware drivers does ROS provide?
• what hardware drivers does ROS provide?
• rxplot for vector like types
• rxplot for vector like types
• How do I get Karma?
• How do I get Karma?
• What are the best practices for tagging questions?
• What are the best practices for tagging questions?
• What is the tf threading model?
• What is the tf threading model?
• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• BSD license questions
• BSD license questions
• tf impact on perf (tf design)
• tf impact on perf (tf design)
• Replay rosbags recorded with --split option
• Replay rosbags recorded with --split option
• tf::TransformListener lookupTransform time error
• tf::TransformListener lookupTransform time error
• ros::Time doesn't update in variable
• ros::Time doesn't update in variable
• Corrected Odometry from GMapping / Karto?
• Corrected Odometry from GMapping / Karto?
• rospy.Publisher: what's a good choice for queue_size?
• rospy.Publisher: what's a good choice for queue_size?
• Gathering Wheel Encoder data and publishing on the /odom topic
• Gathering Wheel Encoder data and publishing on the /odom topic
• usb_cam: VIDIOC_S_FMT error 22
• usb_cam: VIDIOC_S_FMT error 22
• How to save static transforms in bag files?
• How to save static transforms in bag files?
• Install ROS dependencies from apt?
• Install ROS dependencies from apt?
• Calculating velocity from tf
• Calculating velocity from tf
• ROS libraries
• ROS libraries
• Why is ROS ANSWERS forum so easily exploitable?
• Why is ROS ANSWERS forum so easily exploitable?
• ROS indigo key server down
• ROS indigo key server down
• I can not launch the sample code
• I can not launch the sample code
• I can not launch the sample code
• I can not launch the sample code
• Is ROS able to cancel the limit of karma to upload pictures?
• Is ROS able to cancel the limit of karma to upload pictures?
• What is the difference between tf and tf2?
• What is the difference between tf and tf2?
• The difference between Spin() and SpinOnce().
• The difference between Spin() and SpinOnce().
• Why is Twist message without timestamp
• Why is Twist message without timestamp
• tf extrapolation exception using ros::Time(0)
• tf extrapolation exception using ros::Time(0)
• Catkin conversion: /usr/bin/ld: cannot find -lPACKAGE_NAME
• Catkin conversion: /usr/bin/ld: cannot find -lPACKAGE_NAME
• How to get publisher info from a message?
• How to get publisher info from a message?
• TF Lookup would require extrapolation into the future
• TF Lookup would require extrapolation into the future
• How do you upgrade pcl to the current release?
• How do you upgrade pcl to the current release?
• tf transformPoint() equivalent on tf2?
• tf transformPoint() equivalent on tf2?
• TF_OLD_DATA ignoring data from the past for frame odom
• TF_OLD_DATA ignoring data from the past for frame odom
• subscriber queue length
• subscriber queue length
• Why can't I send "123" via rostopic pub?
• Why can't I send "123" via rostopic pub?
• Is there a way to merge bag files?
• Is there a way to merge bag files?
• Replacement for rospy.time.now() in ROS2?
• Replacement for rospy.time.now() in ROS2?
• How to play rosbag using launch file ?
• How to play rosbag using launch file ?
• Is it safe and efficient for several threads to share a single tf::TransformListener object?
• Is it safe and efficient for several threads to share a single tf::TransformListener object?
• What should be written in catkin_package ?
• What should be written in catkin_package ?
• Is it possible to remap topics at runtime?
• Is it possible to remap topics at runtime?
• Converting SolidWorks STL files into urdf file
• Converting SolidWorks STL files into urdf file
• [ROS2] msg stamp time difference
• [ROS2] msg stamp time difference
• subscription callback types ROS1 vs. ROS2
• subscription callback types ROS1 vs. ROS2
• How to build release version of ROS node
• How to build release version of ROS node

● Great Question   × 6

• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• Which data types does tf use?
• Which data types does tf use?

● Enthusiast   × 1

● Necromancer   × 134

• how to programmatically add/remove displays in rviz
• ODE from Gazebo and ROS
• Running a ROS node on VxWorks
• how to check if there are waiting messages in a callback queue?
• Slow observation buffer update warnings in move_base
• tf::waitForTransform() does not wait for transform ...
• Creating a ROS optional Library
• ROS connectivity and usernames
• Sound localization with Kinect and ROS?
• Are zero-copy services possible (nodelet + rosservice)?
• Velocities in gazebo
• how to install hark on ros-electric
• Failed to find rosdep libglui-dev for package view_mesh on OS:ubuntu version:oneiric
• ERROR in rosinstall: Two ros roots defined in config ...
• MonocularCalibration hanging
• Problems compiling nodes using pcl in Ubuntu 11.10
• rosmake gmapping stack
• how to solve the frame ID setting warning?
• Definition for ROS packages on Debian Squeeze
• rosbag file cannot be made // .bag.active
• How to release for multiple ROS versions when version dependent patches are needed?
• How to move through tracked person?
• Converting SolidWorks STL files into urdf file
• Can roslaunch setup rxconsole filters?
• Heterogeneous Robot Communication Over ROS Framework
• Which version of wxWidgets used in ROS?
• texas_park
• Does anyone know how to install ROS without a graphics card?
• OpenNI/NITE incompatible in Fuerte/Groovy on Precise
• c1 vs c2 PR2 Filesystem Organization
• choosing and viewing projects guidance
• problems with ros installation on pandaboard with armhf
• Kinect MIT demo Fuerte
• Kinect + Pandaboard + ROS = Fail
• How to prevent launch shutdown on single remote connection failure? (required="true" not working)
• how can I register a Callback when using ros::spinOnce ?
• Turtlebot2 power for laptop
• how to build a map from logged data
• How to install ROS-fuerte with the dependency to python 2.6 when python 2.7 also exists in Ubuntu12.04?
• bloom; RuntimeError: Two packages have different version numbers
• Is anyone else thinking about wrapping the leap for ROS?
• ROS Tutorial clarification
• TurtleBot plays songs?
• navigation-stack-actionlib
• roslaunch error
• Why can't catkin depend on rosbuild?
• Why does ROS_HOSTNAME overwrite (parts of) ROS_MASTER_URI?
• How to start up the Kinova (JACO Arms) API in ROS?
• Why is ROS ANSWERS forum so easily exploitable?
• Acceleration in Gazebo
• rosdep init error
• How to install ros-groovy-rviz on RaspberryPi?
• Making a module proprietary
• how to correctly display a robot in rviz ?
• Projector calibration?
• Cannot use ros::Time::now() before the first NodeHandle has been created or ros::start() has been called.
• ROS Wiki Citation
• Odometry model two wheeled robot with kinect
• Priority in rospy loglevel configuration
• Concatenating pointclouds gets very slow
• ROS umet dependency libboost-1.46
• Issue with .pc files, Libs rendering incorrectly
• Why no ROSCON 2013 videos on youtube?
• Navigation stack never reach goal
• Accessing custom rosbuild msgs in catkin
• Is there any cognitive architecture applications?
• Is it possible measure the relative distance and bearing among robots?
• invalid message type
• Rviz for 3 robot
• Multiple remote users of ROS master: nickname lookup failure
• how are threads used to service callbacks in nodelets?
• How to run Soar as a ROS node?
• megatree for hydro / src, wiki outdated
• Ubuntu 12.04 on beaglebone ¿hard float or soft float?
• Applying generated velodyne calibration file(yaml) on Ubuntu 14.04 with ROS-INDIGO
• Why does SICK LMS200 not work with angle = 180 and resolution = 0.25
• where can I find ros cheat cheet
• Why ROS messages do not inherit from a base class??
• Why do I need the static transform if my urdf is properly defined?
• Develop a flight control system
• How long is support for ROS Hydro?
• Is there a good tf2 tutorial ?
• ROS inside part of a c++ project
• catkin_create_pkg error
• Mocking in ROS?
• no image received in rviz (turtlebot sim)
• error while loading shared libraries ardrone
• Is there a 3rd-party buildfarm for pre-release tests?
• tf transformPoint() equivalent on tf2?
• Warnings when running turtlebot_gazebo
• error in rosdep initialization
• Can message name end in Request?
• Controlling rviz via rosservice
• Invoking "make -j8 -l8" failed for rgbdslam_v2
• ROSWTF "unexpectedly connected" message and creation of new nodes
• Info about /rosout topic and rosout node
• multi-master network
• Any use case of communication of nodes on different netowkrs?
• remove a ros package in workspace
• Why does ROS use macros for logs?
• ROS move_base costmap not connected error
• load nodelet service as an library
• How to let ar_track_alvar only detect certain tags
• GUI based control in ROS
• What does the "depth" mean on earth?
• install ROS on ubuntu 16.04 with python3
• Could not find configuration package "camera_info_manager" upon build
• Turtlebot installation
• ROS-Lunar Install on Debian Stretch: apt-key deprecation
• Is it necessary to using Callback function when I subscribe?
• PinholeCameraModel::project3dToPixel is correct?
• Undefined reference to tf2::fromMsg
• are there standard battery level messages in ROS
• How does rosmsg md5 calculate the md5sum?
• How do I know if PC is connected to my turtlebot?
• How to make roscd go to ~/catkin_ws/devel instead of /opt/ros/kinetic?
• rospy.get_time() returns 0 when using gazebo
• 3D Obstacles "forgotten" if there is a gap between 3d camera FoV and the robot base
• Connected Tf tree for multimaster turtlebots
• How to delete an attachment on the wiki?
• Transform angular velocity with tf2
• ROS NEWS not updated
• Deprecate ROS Message
• Tf frequency is too large
• Caught exception while loading: Character [-]
• How to serialize C++ objects containing ROS messages
• How to run services on another thread?
• Does anybody make and sell stickers with the ROS logo and related products/brands/companies?
• Can ROS be used for real time orbital flight simulation?
• [ROS2] tf2::fromMsg linker error
• Win10+ROS 2: rosdep install errors: unsupported OS
• tf2::fromMsg cause "Undefined reference"
• How to use ament_lint to validate ROS2 package
• Running humble on Turtlebot3

● Nice Question   × 14

• What topics are necessary to log for creating a SLAM comparison bag file?
• What topics are necessary to log for creating a SLAM comparison bag file?
• What is the tf threading model?
• What is the tf threading model?
• Why don't frame_ids use ROS namespaces?
• Why don't frame_ids use ROS namespaces?
• Do transforms expire?
• Do transforms expire?
• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• Which data types does tf use?
• Which data types does tf use?
• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp

● Notable Question   × 20

• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• Which data types does tf use?
• Which data types does tf use?
• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• rviz crashing on startup with nvidia drivers installed
• rviz crashing on startup with nvidia drivers installed
• Is there a minimum laptop specification for the TurtleBot?
• Is there a minimum laptop specification for the TurtleBot?
• Do transforms expire?
• Do transforms expire?
• Why do I see negative average delay in tf_monitor?
• Why do I see negative average delay in tf_monitor?
• Why don't frame_ids use ROS namespaces?
• Why don't frame_ids use ROS namespaces?
• What topics are necessary to log for creating a SLAM comparison bag file?
• What topics are necessary to log for creating a SLAM comparison bag file?
• What is the tf threading model?
• What is the tf threading model?

● Civic Duty   × 2

• multiple robots in navigation_stage
• multiple robots in navigation_stage

● Taxonomist   × 1

● Self-Learner   × 14

• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• What is the tf threading model?
• What is the tf threading model?
• Why don't frame_ids use ROS namespaces?
• Why don't frame_ids use ROS namespaces?
• Do transforms expire?
• Do transforms expire?
• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• Is there a minimum laptop specification for the TurtleBot?
• Is there a minimum laptop specification for the TurtleBot?
• rviz crashing on startup with nvidia drivers installed
• rviz crashing on startup with nvidia drivers installed

● Editor   × 2

• Which data types does tf use?
• Which data types does tf use?

● Rapid Responder   × 172

• Minimal ROS2 Installation
• When using TF API in a plugin, can I specify the topic from which to listen to the transformations?
• Installing ROS Melodic in Ubuntu 18.04.2 LTS (Bionic Beaver) 32-bit
• [clarification] Packages built during potential compromise in 2019
• Experiment with tf2 in Python without a full ROS install
• Is there any danger to using the same tf2_ros buffer across different message queues?
• Installing ros-melodic-ros-base deletes npm, installing npm deletes ros. How can I have both?
• Import python script to different ROS2 package
• What is the proper way to set up a build farm
• [ROS2] Is it possible to listen and subscribe to newly created topic in C++?
• Setting up a buildfarm with chroot
• Cannot compile a msg file
• Apt Install Ros Kinetic Problem after recent update
• can't use sudo rosbag
• Handling a delayed localization pose?
• Is there an Angles package for ROS 2?
• Can ROS2 be used in a production with Windows 10
• What is a difference between ROS Multimaster and ROS Master-Slave
• ROS2: Specify RTI Connext as rmw implementation on NVidia Jetson Nano not work
• Frames dropped during video recording?
• Broken ROS Melodic install on Ubuntu 18.04
• rosrun can't open my video (ROS OpenCV)
• How to get the latest commit of a dependency
• subscription callback types ROS1 vs. ROS2
• Best practices to manage ROS2 package python dependencies
• How do I specify a ROSDep dependency that is in PyPI but not rosdistro?
• Indexing ROS2 topics/nodes based on host?
• TF_OLD_DATA error when I publish a new topic.
• What is the benefit of building ROS from source?
• colcon silently does nothing
• [ROS2][RViz2] can't compare times with different time sources
• How do I deploy a rosdep mirror?
• What is the equivalent documentation for datatype transforms for tf2?
• How to install ros2 packages on Windows 10?
• Does rosservice support custom tab completion?
• ImportError: dynamic module does not define init function (init_tf2)
• Simulated or stubbed out OpenCR serial communications
• Can nodes from different ROS 2 distributions communicate compatibly?
• Is redistributing ROS2 allowed?
• subscribing to tf's transformation change
• get rotation state of a joint with tf::listener.lookupTransform
• Rosdep not fetching dependencies on RPi3 running Kinetic
• What is the best way to send transform (with scale)?
• TF2 Transform Unpublished Frame
• What is the workflow to prevent mixing python2.7 and python3 for tf2?
• How to know when spin() is up and running?
• docs.ros.org down/broken?
• Is it possible to do file transfers via ros2 messages/topics?
• Trying to do sudo rosdep init and getting the below error
• TF2 ConnectivityException With Connected TF Tree
• "website may be down" error when i try sudo rosdep init
• ROS_ASSERT fails, ros parameter type invalid
• ROS package release - file INSTALL cannot copy file
• Why are there turtles everywhere in ROS land?
• Which constructor of tf2_ros::TransformListener should I use?
• Can't initialize rosdep after installing ROS through conda-forge
• rosdep: installing dependency from non-apt-source
• How to efficiently get TransformStamped in Eloquent?
• Undefined symbol error when using tf2_ros::BufferInterface::transform
• Where should questions about index.ros.org be posted?
• Configuring TF tree for a system that inherently uses NED (North-East-Down) convention?
• How to use tf.transformPose of tf mpdule?
• expcectedCycleTime in Ros2
• Unmet dependencies on Ubuntu 19.10 eloquent
• Minimizing ROS 2 Docker container size?
• Where is roscore in ROS2?
• Ros2 Stopwatch
• Using unreleased test dependencies on the ROS build farm
• Using xacro package in ROS 2
• Why would I want to transform a Pose in Frame A using a Transform From B to C?
• Bridging ROS2 node and NON-ROS based applications on DDS
• Test Framework in ROS2: state of practice as in 2020?
• ROS2 Message Serialization Adapting Types
• Buildfarm - Failing to find dependencies
• Possible to have buildfarm status in PR on Github?
• How do I submit a ROS 2 tutorial?
• bash: distro: No such file or directory
• MsgSrvDoc links 404 on wiki: how to correct ?
• [tf2] get new transform as soon as possible (callback)?
• Unable to locate package ros-noetic-turtlebot3
• How does tf2_ros::BufferInterface::transform work?
• What is up with the PointCloud msg type?
• how can i change the source of octomap
• rosdep -simulate --reinstall list is not same as real install
• rclcpp::Time() without nodehandles in ROS2 Foxy
• [noetic] Build failed in Jenkins: debian/buster could not resolve rosdep key
• Default transform direction if tf2?
• colcon build - number of threads
• share params between nodes ROS2
• Doubt in ROS-2 design document about topics
• How to show topics using python in ROS2
• Create (all) deb-packages of ROS distro
• How can I set a node name when using composing nodes with rclcpp?
• Use virtual machine display in docker
• Why "rosdep install" when compiling ros2 from source?
• ROS tf tree wrong timestamps on fixed joints
• Get valid frames from `tf2_ros.Buffer` based on `cache_time`
• What is setCreateTimerInterface in the TF2 library for?
• Ros2 Foxy tf.transformations.quaternion_from_euler equivalent
• Why is tf_broadcast_publisher creating future tfs
• TF topic needs many source
• ROS Best Practices
• How to use transformPose in Python with Time(0) (most recent common time)?
• too fast tf broadcasting
• rosdep install specific version of dependencies
• Extrapolation exception error (tiny time difference)
• Using tf2 in ROS2 with pure C?
• Time synchronization approaches
• TransformListener x10 higher CPU load in rclpy than rclpp
• how to understand image topic frame orientation?
• rviz2 requests data ahead of system clock -> requires extrapolation into the future
• Signifiance of fixed_frame parameter in lookupTransform function
• Assign a parameter to rosbag record
• How do you install tf_transformations?
• ROS2 lookupTransform() - cannot get transform at time now()
• low frequency transformations
• tf2_echo missing
• How to contribute to ROS2 as UI,UX designer?
• tf_static frames not available in lookup_transform
• Equivalent of checking quaternion is valid in tf2
• Child to parent tf2 transform (c++)
• Why the ROS 2 Buildfarm package blacklisting is not configurable per-repository or per-package?
• GetModelState gives 0.
• How to configure Cyclone discovery service
• How to disable certain tests in ROS 2 Buildfarm?
• [ROS2 Foxy] loading static transform broadcaster arguments from config file
• ROS node which broadcasts periodically frames getting from python?
• TF_REPEATED_DATA issue
• ROS user interface for non-ROS machine
• Why does TF use strictly a tree?
• Two index.yaml files
• rosdep install of libyaml-cpp-dev fails
• roslaunch exit code 2 error
• tf2 starts saying frame doesn't exist
• How can I install Python package opencv-contrib-python using rosdep?
• Can we pass multiple config files to a node in ROS2
• rosdep cannot initialise
• Transform of Marker in RVIZ giving unexpected results (a lesson on what /use_sim_time is for)
• Support of geographical co-ordinate projections other than UTM
• [ROS2] How to solve tf2 error: extrapolation into the future?
• waitForTransform Issues and errors
• How to add RRT or D* path planning into global planner?
• need to get tf2_ros to work in python3 environment for Melodic
• Target_frame does not exist but its found by tf2_tools echo.
• Give just the application ROS without the code (src)
• buildfarm fails for noetic with KeyError: libcurlpp-dev
• Can't init rosdep
• TF2-Eigen 3.4 compatibility
• Buildfarm remote execution scaling
• Expected include directory with Humble
• Obtain the dynamics/mathematical models of Iris in Gazebo
• bloom: How to release a single package from a multi-package repo?
• I want to display GoogleMap within Rviz but Rviz does not.
• [hddtemp] defined as "not available" for OS version [*]
• lookupTransform and tf2_echo shows different results
• Is it possible to publish msg in rospy.on_shutdown
• Rosdep failed to install python-catkin-pkg-modules on Debian buster
• Why is the static_transform_broadcaster_node (tf2_ros) not built as an executable
• is that possible to write nested msg in one file?
• Node stuck at launching when launch with use_sim_time
• the same msg type of multiple topic names can use only one callback on ros2?
• TF get the time of last transform
• How to get the position of tf frame
• Extract topic value from .bag file
• [tf] Sequence numbers of rostopic tf
• Download a ROS2 package from GitHub and install it with colcon
• Inaccurate result from tf2 transform
• Disagreement between TransformStamped comment and sendTransformMessage?
• Compile ROS2 package with pre-compiled shared library
• When is new package available on the ros2 build farm?
• Static sensors (in the world) in rviz?
• Rviz doesn't show the correct tf2 tree

● Good Question   × 10

• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• Which data types does tf use?
• Which data types does tf use?
• What topics are necessary to log for creating a SLAM comparison bag file?
• What topics are necessary to log for creating a SLAM comparison bag file?
• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• Why don't frame_ids use ROS namespaces?
• Why don't frame_ids use ROS namespaces?

● Critic   × 2

• Error at rosmake ccny_ground_station --rosdep-install
• Error at rosmake ccny_ground_station --rosdep-install

● Popular Question   × 20

• Which data types does tf use?
• Which data types does tf use?
• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• rviz crashing on startup with nvidia drivers installed
• rviz crashing on startup with nvidia drivers installed
• What topics are necessary to log for creating a SLAM comparison bag file?
• What topics are necessary to log for creating a SLAM comparison bag file?
• What is the tf threading model?
• What is the tf threading model?
• Why don't frame_ids use ROS namespaces?
• Why don't frame_ids use ROS namespaces?
• Is there a minimum laptop specification for the TurtleBot?
• Is there a minimum laptop specification for the TurtleBot?
• Do transforms expire?
• Do transforms expire?
• Why do I see negative average delay in tf_monitor?
• Why do I see negative average delay in tf_monitor?

● Organizer   × 2

• Using XACRO for Generating URDF Files
• Using XACRO for Generating URDF Files

● Commentator   × 1

• Problem pertaining to DepthGenerator

● Citizen Patrol   × 2

• Are PHP short tags acceptable to use?
• Are PHP short tags acceptable to use?

● Famous Question   × 20

• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp
• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• Which data types does tf use?
• Which data types does tf use?
• Is there a minimum laptop specification for the TurtleBot?
• Is there a minimum laptop specification for the TurtleBot?
• Do transforms expire?
• Do transforms expire?
• Why do I see negative average delay in tf_monitor?
• Why do I see negative average delay in tf_monitor?
• Why don't frame_ids use ROS namespaces?
• Why don't frame_ids use ROS namespaces?
• rviz crashing on startup with nvidia drivers installed
• rviz crashing on startup with nvidia drivers installed
• What topics are necessary to log for creating a SLAM comparison bag file?
• What topics are necessary to log for creating a SLAM comparison bag file?
• What is the tf threading model?
• What is the tf threading model?

● Favorite Question   × 4

• what are quaternions and how can I use them?
• what are quaternions and how can I use them?
• Subscriber and Publisher node at once in cpp
• Subscriber and Publisher node at once in cpp