Dan Lazewatsky's profile - overview

● Popular Question   × 46

• More problems building Ogre on OSX Lion
• More problems building Ogre on OSX Lion
• can't install ros-electric-ros-full
• can't install ros-electric-ros-full
• how is rosh's ok() different from rospy.is_shutdown()?
• how is rosh's ok() different from rospy.is_shutdown()?
• Linking error with pcl_ros_tf
• Linking error with pcl_ros_tf
• lookupTwist returning crazy velocities
• lookupTwist returning crazy velocities
• Can't log in to answers.ros.org using Google Authentification
• Can't log in to answers.ros.org using Google Authentification
• Pointing PR2 head at something in the camera frame
• Pointing PR2 head at something in the camera frame
• rosh topics.foo[0] not working as expected in a loop
• rosh topics.foo[0] not working as expected in a loop
• tf tree becomes randomly disconnected
• tf tree becomes randomly disconnected
• how can I make placing with the pick and place manager more reliable?
• how can I make placing with the pick and place manager more reliable?
• What's the status if pr2_kinematics in electric?
• What's the status if pr2_kinematics in electric?
• errors with groovy source install
• errors with groovy source install
• python conflicts with homebrew-based install on osx
• python conflicts with homebrew-based install on osx
• what version of nvidia-cg does ogre want?
• what version of nvidia-cg does ogre want?
• opencv2 build failing on osx
• opencv2 build failing on osx
• Is there a backup of kforge.ros.org anywhere?
• Is there a backup of kforge.ros.org anywhere?
• tf negative time change messages
• tf negative time change messages
• migrating to catkin: undefined reference from header file
• migrating to catkin: undefined reference from header file
• Can I get a latched topic with rosh?
• Can I get a latched topic with rosh?
• Python inconsistency between deb and install space
• Python inconsistency between deb and install space
• trouble building opencv on fc15
• trouble building opencv on fc15
• Running cob_3d_mapping_pipeline
• Running cob_3d_mapping_pipeline
• broken packages installing electric full on natty
• broken packages installing electric full on natty

● Guru   × 27

• How do you remap a topic?
• Basic Question Mobile Robot cmd_vel
• How can I zoom in rxgraph??
• how to update ROS_PACKAGE_PATH ?
• Turtlebot, is it open source hardware ?
• Eigen in ROS?
• quaternions with python
• ROS offline
• how do I install pcd_viewer?
• Focal Length from Monocular Calibration
• Help publishing to cmd_vel and subscribing to LaserScan
• Can I ask General Robotics Questions?
• how to send empty message?
• Kill roscore and all nodes when rosbag play finishes?
• add depth image to laser scan in a launch file
• How to make launch files?
• turtlebot robot_pose_ekf/odom? or odom?
• run a subscriber callback once using rospy.spin()
• Calling a python script with ROSRUN
• Can't find my command "rosinstall"
• Synchronization of 2 or more nodes?
• How do I convert an ROS image into a numpy array?
• Get list of running nodes
• navigation without a map?
• transform a point from pointcloud
• Difference between using dynamic_reconfigure and using getParam at runtime
• launching image_view for a topic

● Enlightened   × 2

• How do you remap a topic?
• How do you remap a topic?

● Notable Question   × 46

• More problems building Ogre on OSX Lion
• More problems building Ogre on OSX Lion
• how is rosh's ok() different from rospy.is_shutdown()?
• how is rosh's ok() different from rospy.is_shutdown()?
• Linking error with pcl_ros_tf
• Linking error with pcl_ros_tf
• lookupTwist returning crazy velocities
• lookupTwist returning crazy velocities
• Can't log in to answers.ros.org using Google Authentification
• Can't log in to answers.ros.org using Google Authentification
• can't install ros-electric-ros-full
• can't install ros-electric-ros-full
• Pointing PR2 head at something in the camera frame
• Pointing PR2 head at something in the camera frame
• rosh topics.foo[0] not working as expected in a loop
• rosh topics.foo[0] not working as expected in a loop
• tf tree becomes randomly disconnected
• tf tree becomes randomly disconnected
• What's the status if pr2_kinematics in electric?
• What's the status if pr2_kinematics in electric?
• how can I make placing with the pick and place manager more reliable?
• how can I make placing with the pick and place manager more reliable?
• errors with groovy source install
• errors with groovy source install
• python conflicts with homebrew-based install on osx
• python conflicts with homebrew-based install on osx
• what version of nvidia-cg does ogre want?
• what version of nvidia-cg does ogre want?
• opencv2 build failing on osx
• opencv2 build failing on osx
• Is there a backup of kforge.ros.org anywhere?
• Is there a backup of kforge.ros.org anywhere?
• tf negative time change messages
• tf negative time change messages
• migrating to catkin: undefined reference from header file
• migrating to catkin: undefined reference from header file
• Can I get a latched topic with rosh?
• Can I get a latched topic with rosh?
• Python inconsistency between deb and install space
• Python inconsistency between deb and install space
• trouble building opencv on fc15
• trouble building opencv on fc15
• broken packages installing electric full on natty
• broken packages installing electric full on natty
• Running cob_3d_mapping_pipeline
• Running cob_3d_mapping_pipeline

● Critic   × 2

• Using rosservice from webui
• Using rosservice from webui

● Editor   × 2

• Shoudl AMCL attempt to respect/get hints from walls?
• Shoudl AMCL attempt to respect/get hints from walls?

● Nice Answer   × 246

• How do you remap a topic?
• How do you remap a topic?
• Using python for automatically writing data in bag to csv file
• Using python for automatically writing data in bag to csv file
• the tf between /map and /odom is not static?
• the tf between /map and /odom is not static?
• How can I zoom in rxgraph??
• How can I zoom in rxgraph??
• Basic Question Mobile Robot cmd_vel
• Basic Question Mobile Robot cmd_vel
• Eigen in ROS?
• Eigen in ROS?
• Shoudl AMCL attempt to respect/get hints from walls?
• Shoudl AMCL attempt to respect/get hints from walls?
• navigation without a map?
• navigation without a map?
• publisher and rosinit
• publisher and rosinit
• how to update ROS_PACKAGE_PATH ?
• how to update ROS_PACKAGE_PATH ?
• Help publishing to cmd_vel and subscribing to LaserScan
• Help publishing to cmd_vel and subscribing to LaserScan
• Does the roomba 564 has a gyro?
• Does the roomba 564 has a gyro?
• Understanding the Kinect pointcloud
• Understanding the Kinect pointcloud
• Turtlebot, is it open source hardware ?
• Turtlebot, is it open source hardware ?
• Focal Length from Monocular Calibration
• Focal Length from Monocular Calibration
• Kill roscore and all nodes when rosbag play finishes?
• Kill roscore and all nodes when rosbag play finishes?
• quaternions with python
• quaternions with python
• Errno2 xml syntax in launch file
• Errno2 xml syntax in launch file
• Need to check the rosinstall for openni
• Need to check the rosinstall for openni
• cv_bridge and IplImage -> Mat when going from OpenCV 2.1 to OpenCV 2.3?
• cv_bridge and IplImage -> Mat when going from OpenCV 2.1 to OpenCV 2.3?
• Calculating velocity from tf
• Calculating velocity from tf
• Does the turtlebot need wifi access to build a map?
• Does the turtlebot need wifi access to build a map?
• How do I use RegionOfInterest in sensor_msgs ?
• How do I use RegionOfInterest in sensor_msgs ?
• rosinstall openni_kinect error
• rosinstall openni_kinect error
• save to a point cloud file
• save to a point cloud file
• how do I install pcd_viewer?
• how do I install pcd_viewer?
• USB 3.0 Kinect
• USB 3.0 Kinect
• run a subscriber callback once using rospy.spin()
• run a subscriber callback once using rospy.spin()
• Can't find my command "rosinstall"
• Can't find my command "rosinstall"
• How to make launch files?
• How to make launch files?
• Constraints on Nested Tags in Launch Files
• Constraints on Nested Tags in Launch Files
• video stream between multiple maschines
• video stream between multiple maschines
• Creating flight joystick node with libusb
• Creating flight joystick node with libusb
• Point Cloud point to map coordinates
• Point Cloud point to map coordinates
• transform a point from pointcloud
• transform a point from pointcloud
• rospy function scheduler
• rospy function scheduler
• Explore subscribed topics
• Explore subscribed topics
• Points in a pointcloud and their distance from camera
• Points in a pointcloud and their distance from camera
• Fuerte RGBD-SLAM for ASUS Action Pro
• Fuerte RGBD-SLAM for ASUS Action Pro
• point cloud produces meaningless data
• point cloud produces meaningless data
• Deprecated Kinect driver superior to the new one
• Deprecated Kinect driver superior to the new one
• error in /opt/ros/fuerte/share/ros/stack.xml
• error in /opt/ros/fuerte/share/ros/stack.xml
• rosmake error: costmap_2d depends on non-existent package pcl
• rosmake error: costmap_2d depends on non-existent package pcl
• ros::spinOnce() not functioning properly
• ros::spinOnce() not functioning properly
• ROS offline
• ROS offline
• Synchronization of 2 or more nodes?
• Synchronization of 2 or more nodes?
• Face recognition using Kinect
• Face recognition using Kinect
• Unset ROS_HOSTNAME
• Unset ROS_HOSTNAME
• turtlebot robot_pose_ekf/odom? or odom?
• turtlebot robot_pose_ekf/odom? or odom?
• Kinect crashes on invoking command "rosbag record -a"
• Kinect crashes on invoking command "rosbag record -a"
• launching image_view for a topic
• launching image_view for a topic
• Difference between using dynamic_reconfigure and using getParam at runtime
• Difference between using dynamic_reconfigure and using getParam at runtime
• Writing a Teleoperation Node for a Linux-Supported Joystick
• Writing a Teleoperation Node for a Linux-Supported Joystick
• Network unstable between Turtlebot and workstation
• Network unstable between Turtlebot and workstation
• camera_calibration cameracalibrator.py buttons are disabled
• camera_calibration cameracalibrator.py buttons are disabled
• Is Basestation a must for PR2?
• Is Basestation a must for PR2?
• Connecting Kinect on USB 1.0
• Connecting Kinect on USB 1.0
• Multiple Kinects: Global Options parameter?
• Multiple Kinects: Global Options parameter?
• timer callback
• timer callback
• how to send empty message?
• how to send empty message?
• 'JPEG compression requires 8-bit, 1/3-channel images' error since Fuerte
• 'JPEG compression requires 8-bit, 1/3-channel images' error since Fuerte
• Can I dynamically set a parameter for c++ node?
• Can I dynamically set a parameter for c++ node?
• Calling a python script with ROSRUN
• Calling a python script with ROSRUN
• How to perform a good calibration for the Kinect?
• How to perform a good calibration for the Kinect?
• Rectification matrix clarification in stereo vision calibration
• Rectification matrix clarification in stereo vision calibration
• how to get timestamp from header
• how to get timestamp from header
• Create bin directory with executable node
• Create bin directory with executable node
• Building a 3d pointcloud from rotating 2d lidar with a SICK LMS 291/s14 and high resolution optical encoder
• Building a 3d pointcloud from rotating 2d lidar with a SICK LMS 291/s14 and high resolution optical encoder
• add depth image to laser scan in a launch file
• add depth image to laser scan in a launch file
• How do I convert an ROS image into a numpy array?
• How do I convert an ROS image into a numpy array?
• How to find a laser straight line?
• How to find a laser straight line?
• /odom and /vo priority in robot_pose_ekf
• /odom and /vo priority in robot_pose_ekf
• Configuring frame rate of Asus Xtion Pro Live
• Configuring frame rate of Asus Xtion Pro Live
• Connect nodes from different ROS distributions
• Connect nodes from different ROS distributions
• How can I post the time that has passed during a process?
• How can I post the time that has passed during a process?
• Why do vectors not work in ROS?
• Why do vectors not work in ROS?
• questions about irobot create
• questions about irobot create
• What is the best way for recieving data through serial port in hydro?
• What is the best way for recieving data through serial port in hydro?
• IMU + AMCL for localization
• IMU + AMCL for localization
• conversion of depht image coordinates to world coordinates (u,v,d) to (x,y,z)
• conversion of depht image coordinates to world coordinates (u,v,d) to (x,y,z)
• How to enable stiffness using C++
• How to enable stiffness using C++
• Get list of running nodes
• Get list of running nodes
• (How) can a rospy node be reinitialized after ctrl+c?
• (How) can a rospy node be reinitialized after ctrl+c?
• What should I upload exactly to GitHub
• What should I upload exactly to GitHub
• Cleanly exit from python publisher ensuring all messages sent
• Cleanly exit from python publisher ensuring all messages sent
• Query a frame from a video passed as a message by ROS to OpenCV
• Query a frame from a video passed as a message by ROS to OpenCV
• Delete duplicate point cloud of the same part.
• Delete duplicate point cloud of the same part.
• Can I ask General Robotics Questions?
• Can I ask General Robotics Questions?
• Image transfer between master pc and slave Pc
• Image transfer between master pc and slave Pc
• How to get coordinates from depthImage
• How to get coordinates from depthImage
• Getting the navigation goal from RVIZ
• Getting the navigation goal from RVIZ
• how get Kinect for windows work on ros?
• how get Kinect for windows work on ros?
• Is ROS compatible with all robots?
• Is ROS compatible with all robots?
• Gmapping is adding extra points to my map that aren't from the laser scan.
• Gmapping is adding extra points to my map that aren't from the laser scan.
• What is float64?
• What is float64?
• Ar_pose doesn't recognize tag in tum_simulator. Please help.
• Ar_pose doesn't recognize tag in tum_simulator. Please help.
• Why catkin_make doesn't create executables?
• Why catkin_make doesn't create executables?
• what is the distance unit of /camera/depth/image_raw
• what is the distance unit of /camera/depth/image_raw
• RViz notification on "params modified"
• RViz notification on "params modified"
• Dynamically adding a static transformation to tf
• Dynamically adding a static transformation to tf
• How do I run and control more than one Turtlebot in a single simulation gazebo / Ros.
• How do I run and control more than one Turtlebot in a single simulation gazebo / Ros.
• latch=True in rospy.Publisher() appears to have no effect
• latch=True in rospy.Publisher() appears to have no effect
• amcl estimation quality
• amcl estimation quality
• Rosbag on srvs?
• Rosbag on srvs?
• How inefficient is it to create the same publisher multiple times?
• How inefficient is it to create the same publisher multiple times?
• How to use ApproximateTime in python
• How to use ApproximateTime in python
• About the camera calibration parameters
• About the camera calibration parameters
• sudo can't find rospy
• sudo can't find rospy
• Web development in ROS Hydro
• Web development in ROS Hydro
• One big subscriber vs. multiple small subscribers?
• One big subscriber vs. multiple small subscribers?
• How to find a node type during runtime
• How to find a node type during runtime
• Error: "Unable to convert 32FC1 image to bgr8" while extracting rbg(d?) data from a bag
• Error: "Unable to convert 32FC1 image to bgr8" while extracting rbg(d?) data from a bag
• Python PCL fails to install
• Python PCL fails to install
• Get an odom from scan
• Get an odom from scan
• How are signals handled by roslaunch?
• How are signals handled by roslaunch?
• How to see nodes CPU usage in ROS ?
• How to see nodes CPU usage in ROS ?
• API to know if a node is alive?
• API to know if a node is alive?
• Importing ROS Messages in Python
• Importing ROS Messages in Python
• Why am I getting an rospy error in __getitem__ raise KeyError(key) ?
• Why am I getting an rospy error in __getitem__ raise KeyError(key) ?
• launch roscore from launch file
• launch roscore from launch file
• ROS Network through firewall
• ROS Network through firewall
• Shutdown nodes from within a ROS node
• Shutdown nodes from within a ROS node
• read topic without callback
• read topic without callback

● Teacher   × 2

• Can diamondback nodes communicate with cturtle nodes ?
• Can diamondback nodes communicate with cturtle nodes ?

● Good Answer   × 142

• How do you remap a topic?
• How do you remap a topic?
• the tf between /map and /odom is not static?
• the tf between /map and /odom is not static?
• How can I zoom in rxgraph??
• How can I zoom in rxgraph??
• Basic Question Mobile Robot cmd_vel
• Basic Question Mobile Robot cmd_vel
• Eigen in ROS?
• Eigen in ROS?
• Using python for automatically writing data in bag to csv file
• Using python for automatically writing data in bag to csv file
• publisher and rosinit
• publisher and rosinit
• how to update ROS_PACKAGE_PATH ?
• how to update ROS_PACKAGE_PATH ?
• Help publishing to cmd_vel and subscribing to LaserScan
• Help publishing to cmd_vel and subscribing to LaserScan
• navigation without a map?
• navigation without a map?
• Turtlebot, is it open source hardware ?
• Turtlebot, is it open source hardware ?
• Focal Length from Monocular Calibration
• Focal Length from Monocular Calibration
• Understanding the Kinect pointcloud
• Understanding the Kinect pointcloud
• Kill roscore and all nodes when rosbag play finishes?
• Kill roscore and all nodes when rosbag play finishes?
• quaternions with python
• quaternions with python
• save to a point cloud file
• save to a point cloud file
• how do I install pcd_viewer?
• how do I install pcd_viewer?
• USB 3.0 Kinect
• USB 3.0 Kinect
• Can't find my command "rosinstall"
• Can't find my command "rosinstall"
• Constraints on Nested Tags in Launch Files
• Constraints on Nested Tags in Launch Files
• video stream between multiple maschines
• video stream between multiple maschines
• Creating flight joystick node with libusb
• Creating flight joystick node with libusb
• Points in a pointcloud and their distance from camera
• Points in a pointcloud and their distance from camera
• ros::spinOnce() not functioning properly
• ros::spinOnce() not functioning properly
• ROS offline
• ROS offline
• Synchronization of 2 or more nodes?
• Synchronization of 2 or more nodes?
• Unset ROS_HOSTNAME
• Unset ROS_HOSTNAME
• launching image_view for a topic
• launching image_view for a topic
• Difference between using dynamic_reconfigure and using getParam at runtime
• Difference between using dynamic_reconfigure and using getParam at runtime
• Writing a Teleoperation Node for a Linux-Supported Joystick
• Writing a Teleoperation Node for a Linux-Supported Joystick
• Network unstable between Turtlebot and workstation
• Network unstable between Turtlebot and workstation
• Point Cloud point to map coordinates
• Point Cloud point to map coordinates
• Calculating velocity from tf
• Calculating velocity from tf
• Explore subscribed topics
• Explore subscribed topics
• Connecting Kinect on USB 1.0
• Connecting Kinect on USB 1.0
• how to send empty message?
• how to send empty message?
• timer callback
• timer callback
• How do I convert an ROS image into a numpy array?
• How do I convert an ROS image into a numpy array?
• /odom and /vo priority in robot_pose_ekf
• /odom and /vo priority in robot_pose_ekf
• How to make launch files?
• How to make launch files?
• Connect nodes from different ROS distributions
• Connect nodes from different ROS distributions
• how to get timestamp from header
• how to get timestamp from header
• What is the best way for recieving data through serial port in hydro?
• What is the best way for recieving data through serial port in hydro?
• run a subscriber callback once using rospy.spin()
• run a subscriber callback once using rospy.spin()
• Multiple Kinects: Global Options parameter?
• Multiple Kinects: Global Options parameter?
• transform a point from pointcloud
• transform a point from pointcloud
• (How) can a rospy node be reinitialized after ctrl+c?
• (How) can a rospy node be reinitialized after ctrl+c?
• add depth image to laser scan in a launch file
• add depth image to laser scan in a launch file
• Can I ask General Robotics Questions?
• Can I ask General Robotics Questions?
• Getting the navigation goal from RVIZ
• Getting the navigation goal from RVIZ
• turtlebot robot_pose_ekf/odom? or odom?
• turtlebot robot_pose_ekf/odom? or odom?
• Is ROS compatible with all robots?
• Is ROS compatible with all robots?
• conversion of depht image coordinates to world coordinates (u,v,d) to (x,y,z)
• conversion of depht image coordinates to world coordinates (u,v,d) to (x,y,z)
• Ar_pose doesn't recognize tag in tum_simulator. Please help.
• Ar_pose doesn't recognize tag in tum_simulator. Please help.
• Errno2 xml syntax in launch file
• Errno2 xml syntax in launch file
• One big subscriber vs. multiple small subscribers?
• One big subscriber vs. multiple small subscribers?
• Get list of running nodes
• Get list of running nodes
• Calling a python script with ROSRUN
• Calling a python script with ROSRUN
• How to use ApproximateTime in python
• How to use ApproximateTime in python
• Cleanly exit from python publisher ensuring all messages sent
• Cleanly exit from python publisher ensuring all messages sent
• What is float64?
• What is float64?
• How to find a node type during runtime
• How to find a node type during runtime
• API to know if a node is alive?
• API to know if a node is alive?
• amcl estimation quality
• amcl estimation quality
• What should I upload exactly to GitHub
• What should I upload exactly to GitHub
• Get an odom from scan
• Get an odom from scan
• Why am I getting an rospy error in __getitem__ raise KeyError(key) ?
• Why am I getting an rospy error in __getitem__ raise KeyError(key) ?
• rospy function scheduler
• rospy function scheduler
• Importing ROS Messages in Python
• Importing ROS Messages in Python
• Delete duplicate point cloud of the same part.
• Delete duplicate point cloud of the same part.
• launch roscore from launch file
• launch roscore from launch file

● Famous Question   × 44

• how is rosh's ok() different from rospy.is_shutdown()?
• how is rosh's ok() different from rospy.is_shutdown()?
• More problems building Ogre on OSX Lion
• More problems building Ogre on OSX Lion
• Linking error with pcl_ros_tf
• Linking error with pcl_ros_tf
• lookupTwist returning crazy velocities
• lookupTwist returning crazy velocities
• Can't log in to answers.ros.org using Google Authentification
• Can't log in to answers.ros.org using Google Authentification
• can't install ros-electric-ros-full
• can't install ros-electric-ros-full
• Pointing PR2 head at something in the camera frame
• Pointing PR2 head at something in the camera frame
• rosh topics.foo[0] not working as expected in a loop
• rosh topics.foo[0] not working as expected in a loop
• What's the status if pr2_kinematics in electric?
• What's the status if pr2_kinematics in electric?
• errors with groovy source install
• errors with groovy source install
• python conflicts with homebrew-based install on osx
• python conflicts with homebrew-based install on osx
• what version of nvidia-cg does ogre want?
• what version of nvidia-cg does ogre want?
• tf tree becomes randomly disconnected
• tf tree becomes randomly disconnected
• opencv2 build failing on osx
• opencv2 build failing on osx
• how can I make placing with the pick and place manager more reliable?
• how can I make placing with the pick and place manager more reliable?
• Is there a backup of kforge.ros.org anywhere?
• Is there a backup of kforge.ros.org anywhere?
• tf negative time change messages
• tf negative time change messages
• Can I get a latched topic with rosh?
• Can I get a latched topic with rosh?
• migrating to catkin: undefined reference from header file
• migrating to catkin: undefined reference from header file
• trouble building opencv on fc15
• trouble building opencv on fc15
• Python inconsistency between deb and install space
• Python inconsistency between deb and install space
• broken packages installing electric full on natty
• broken packages installing electric full on natty

● Commentator   × 1

• what version of nvidia-cg does ogre want?

● Self-Learner   × 2

• can't install ros-electric-ros-full
• can't install ros-electric-ros-full

● Citizen Patrol   × 2

• Failed to load r_cart
• Failed to load r_cart

● Taxonomist   × 1

● Nice Question   × 10

• lookupTwist returning crazy velocities
• lookupTwist returning crazy velocities
• Can I get a latched topic with rosh?
• Can I get a latched topic with rosh?
• Linking error with pcl_ros_tf
• Linking error with pcl_ros_tf
• python conflicts with homebrew-based install on osx
• python conflicts with homebrew-based install on osx
• Is there a backup of kforge.ros.org anywhere?
• Is there a backup of kforge.ros.org anywhere?

● Good Question   × 2

• Is there a backup of kforge.ros.org anywhere?
• Is there a backup of kforge.ros.org anywhere?

● Great Answer   × 60

• How do you remap a topic?
• How do you remap a topic?
• the tf between /map and /odom is not static?
• the tf between /map and /odom is not static?
• Basic Question Mobile Robot cmd_vel
• Basic Question Mobile Robot cmd_vel
• How can I zoom in rxgraph??
• How can I zoom in rxgraph??
• how to update ROS_PACKAGE_PATH ?
• how to update ROS_PACKAGE_PATH ?
• Turtlebot, is it open source hardware ?
• Turtlebot, is it open source hardware ?
• Eigen in ROS?
• Eigen in ROS?
• quaternions with python
• quaternions with python
• ROS offline
• ROS offline
• how do I install pcd_viewer?
• how do I install pcd_viewer?
• Focal Length from Monocular Calibration
• Focal Length from Monocular Calibration
• Help publishing to cmd_vel and subscribing to LaserScan
• Help publishing to cmd_vel and subscribing to LaserScan
• Can I ask General Robotics Questions?
• Can I ask General Robotics Questions?
• how to send empty message?
• how to send empty message?
• Kill roscore and all nodes when rosbag play finishes?
• Kill roscore and all nodes when rosbag play finishes?
• add depth image to laser scan in a launch file
• add depth image to laser scan in a launch file
• How to make launch files?
• How to make launch files?
• turtlebot robot_pose_ekf/odom? or odom?
• turtlebot robot_pose_ekf/odom? or odom?
• run a subscriber callback once using rospy.spin()
• run a subscriber callback once using rospy.spin()
• Calling a python script with ROSRUN
• Calling a python script with ROSRUN
• Can't find my command "rosinstall"
• Can't find my command "rosinstall"
• Synchronization of 2 or more nodes?
• Synchronization of 2 or more nodes?
• How do I convert an ROS image into a numpy array?
• How do I convert an ROS image into a numpy array?
• Calculating velocity from tf
• Calculating velocity from tf
• Get list of running nodes
• Get list of running nodes
• What is float64?
• What is float64?
• navigation without a map?
• navigation without a map?
• transform a point from pointcloud
• transform a point from pointcloud
• Difference between using dynamic_reconfigure and using getParam at runtime
• Difference between using dynamic_reconfigure and using getParam at runtime
• launching image_view for a topic
• launching image_view for a topic

● Supporter   × 2

• Adding a dependency after roscreate-pkg
• Adding a dependency after roscreate-pkg

● Student   × 2

• lookupTwist returning crazy velocities
• lookupTwist returning crazy velocities

● Scholar   × 2

• Pointing PR2 head at something in the camera frame
• Pointing PR2 head at something in the camera frame

● Organizer   × 2

• I want to develop a GUI with pyqt
• I want to develop a GUI with pyqt

● Necromancer   × 3

• rviz in Qt
• Could someone please provide a ROS-ready raspberry pi filesystem?
• How to use ApproximateTime in python

● Enthusiast   × 1

● Civic Duty   × 2

• difference between Time.now() and /clock
• difference between Time.now() and /clock