mgruhler's profile - overview

● Nice Answer   × 306

• Local costmap width, height, resolution and origin initializing
• Local costmap width, height, resolution and origin initializing
• catkin: build debendencies library of two other libraries
• catkin: build debendencies library of two other libraries
• remapper /scan to /scan2
• remapper /scan to /scan2
• Implementing costmap_2d layer with pre-Hydro costmap.
• Implementing costmap_2d layer with pre-Hydro costmap.
• How can I add C++ optimization flags to ROS
• How can I add C++ optimization flags to ROS
• ROSARIA catkin_make error
• ROSARIA catkin_make error
• What are LaserScan intensities?
• What are LaserScan intensities?
• Load 2D parameter from parameter server
• Load 2D parameter from parameter server
• Importing a costmap layer from a pgm.
• Importing a costmap layer from a pgm.
• Calling /ardrone/togglecam from python code rather than from terminal
• Calling /ardrone/togglecam from python code rather than from terminal
• eigenConfig.cmake not found (ROS Indigo)
• eigenConfig.cmake not found (ROS Indigo)
• problem in writing a simple service and client(python)
• problem in writing a simple service and client(python)
• Question about nodes
• Question about nodes
• Map_server fails to publish transform
• Map_server fails to publish transform
• "use_sim_time" parameter disabled tf
• "use_sim_time" parameter disabled tf
• reading a file and publishing data to topic
• reading a file and publishing data to topic
• Fail to make hector_gazebo_thermal_camera
• Fail to make hector_gazebo_thermal_camera
• How do I know when rosbag finished? (by code - without looking at the terminal)
• How do I know when rosbag finished? (by code - without looking at the terminal)
• How to install laser_scan_matcher in ros indigo
• How to install laser_scan_matcher in ros indigo
• Clearing of obstacle layer in the layered_costmap
• Clearing of obstacle layer in the layered_costmap
• How to pause a mobile robot during navigation?
• How to pause a mobile robot during navigation?
• How does the Planer move plugin work?
• How does the Planer move plugin work?
• [rospack] Error: package 'image_view' not found
• [rospack] Error: package 'image_view' not found
• Where can i find the source code of tf::StampedTransform class and function
• Where can i find the source code of tf::StampedTransform class and function
• What is the "center of the robot" in costmap_2d's footprint?
• What is the "center of the robot" in costmap_2d's footprint?
• Negative values in launch file arguments
• Negative values in launch file arguments
• Gmapping tf problem
• Gmapping tf problem
• Relations between odom coordinate and map coordinate system when create a map？
• Relations between odom coordinate and map coordinate system when create a map？
• New node and custom msg giving a data_class error
• New node and custom msg giving a data_class error
• What is the correct way to commit clean a workspace before commiting?
• What is the correct way to commit clean a workspace before commiting?
• tf tree problem with map->odom->base_link
• tf tree problem with map->odom->base_link
• Question about one sentence
• Question about one sentence
• Could not find a package configuration file provided by "controller_manager"
• Could not find a package configuration file provided by "controller_manager"
• Launch files not copied into share folder by catkin_make
• Launch files not copied into share folder by catkin_make
• Error in amcl node while configuring navigation stack simulation
• Error in amcl node while configuring navigation stack simulation
• Problem with gmapping.launch file
• Problem with gmapping.launch file
• Checking whether a particular position in the map has any obstacle
• Checking whether a particular position in the map has any obstacle
• `ROS_INFO_STREAM_NAMED(name, msg)` isn't streaming to the appropriate name
• `ROS_INFO_STREAM_NAMED(name, msg)` isn't streaming to the appropriate name
• Problem creating a ROS package with the presence of external headers
• Problem creating a ROS package with the presence of external headers
• How to generate different random cmd_vel messages?
• How to generate different random cmd_vel messages?
• Can Gmapping package in ROS can create map at Runtime
• Can Gmapping package in ROS can create map at Runtime
• amcl demo: map_server could not open yaml file (yaml file exists)
• amcl demo: map_server could not open yaml file (yaml file exists)
• Rosbag in Roslaunch, save rosbag to specific directory
• Rosbag in Roslaunch, save rosbag to specific directory
• How does ROS work with real/actual robot in general? How's the process when we send a data to the actual robot?
• How does ROS work with real/actual robot in general? How's the process when we send a data to the actual robot?
• ros-by-example vol2. catkin_make rbx2 error
• ros-by-example vol2. catkin_make rbx2 error
• Publish a message from global scope in python
• Publish a message from global scope in python
• How to load a cfg file in a launch file for lsd_slam
• How to load a cfg file in a launch file for lsd_slam
• Ask about the usage of the tilde '~'sign
• Ask about the usage of the tilde '~'sign
• Cmake error - not able to run catkin_make
• Cmake error - not able to run catkin_make
• Command line: rostopic pub - why is required specify a topic type?
• Command line: rostopic pub - why is required specify a topic type?
• common-msgs vs std-msgs ?
• common-msgs vs std-msgs ?
• what is the need for introducing ros industrial?
• what is the need for introducing ros industrial?
• [rosrun] Couldn't find executable named mavsys
• [rosrun] Couldn't find executable named mavsys
• base_pose_ground_truth type?
• base_pose_ground_truth type?
• Problem with serialization.h
• Problem with serialization.h
• RViz -- How to publish more than 1 point?
• RViz -- How to publish more than 1 point?
• how to send a predefined path to a local planner?
• how to send a predefined path to a local planner?
• ROS Indigo on Ubuntu 16.04 LTS E: Unable to locate package ros-indigo-desktop-full
• ROS Indigo on Ubuntu 16.04 LTS E: Unable to locate package ros-indigo-desktop-full
• i am getting error while installing ros indigo in ubuntu 14.04 LTS?
• i am getting error while installing ros indigo in ubuntu 14.04 LTS?
• Check if messages are published on a topic
• Check if messages are published on a topic
• Is there any actual difference between a topic and a service?
• Is there any actual difference between a topic and a service?
• Custom Costmap2D Layer is not updating
• Custom Costmap2D Layer is not updating
• [solved]:-How to publish negative values from command line ?
• [solved]:-How to publish negative values from command line ?
• transform geometry_msgs::TransformStamped to tf2::Transform transform
• transform geometry_msgs::TransformStamped to tf2::Transform transform
• How to solve Warning with /imu_frame using robot_localization package?
• How to solve Warning with /imu_frame using robot_localization package?
• Still cannot include library to package from another package
• Still cannot include library to package from another package
• Path Planning in ROS.
• Path Planning in ROS.
• what is header.seq, header.stamp header.frame_id for mavros topics
• what is header.seq, header.stamp header.frame_id for mavros topics
• Dynamic reconfigure headers not generated
• Dynamic reconfigure headers not generated
• Build RViz plugin from .ui file
• Build RViz plugin from .ui file
• What is the difference DWAPlannerROS/global_plan and DWAPlannerROS/local_plan?
• What is the difference DWAPlannerROS/global_plan and DWAPlannerROS/local_plan?
• Is there only one catkin_ws can be active ?
• Is there only one catkin_ws can be active ?
• When should I use rosdep and when should I use apt or pip?
• When should I use rosdep and when should I use apt or pip?
• Building an action server and action client located in two separate packages
• Building an action server and action client located in two separate packages
• CMakeList.txt
• CMakeList.txt
• Shutdown a node from another node in ROS CPP
• Shutdown a node from another node in ROS CPP
• Problems with .rosinstall when calling wstool merge
• Problems with .rosinstall when calling wstool merge
• access parameters in service function
• access parameters in service function
• Is it more "rossy" to publish to one topic and later distinguish msgs?
• Is it more "rossy" to publish to one topic and later distinguish msgs?
• roslaunch env tag not functioning correctly
• roslaunch env tag not functioning correctly
• Error with catkin_make after installing hector_navigation
• Error with catkin_make after installing hector_navigation
• Is there a way to undo workspace chaining?
• Is there a way to undo workspace chaining?
• melodic gmapping
• melodic gmapping
• catkin_make --pkg <package> alternative
• catkin_make --pkg <package> alternative
• how to use callback() with python
• how to use callback() with python
• Get service message data
• Get service message data
• How to change the topic name for publishing occupancy grid using map_server?
• How to change the topic name for publishing occupancy grid using map_server?
• amcl_pose topic returns different than the map->odom->base transform
• amcl_pose topic returns different than the map->odom->base transform
• Using a action's result
• Using a action's result
• Using a action's result - Pt. 2
• Using a action's result - Pt. 2
• catkin_create_pkg: error: argument --rosdistro is required
• catkin_create_pkg: error: argument --rosdistro is required
• Cleaning up after shutdown request
• Cleaning up after shutdown request
• rosout node and rosout topic
• rosout node and rosout topic
• gmapping: disable TF publishing
• gmapping: disable TF publishing
• No laser scan received
• No laser scan received
• creating metapackage
• creating metapackage
• 'double' is not a supported type in ROS messages?
• 'double' is not a supported type in ROS messages?
• Converting ros::time to double value without uint_t
• Converting ros::time to double value without uint_t
• ROS Code VideoCapture doesn't work on Intel NUC5i5MYBE
• ROS Code VideoCapture doesn't work on Intel NUC5i5MYBE
• Passing LDFLAGS and CPPFLAGS to catkin_make
• Passing LDFLAGS and CPPFLAGS to catkin_make
• eigen3 missing error during ROS installation
• eigen3 missing error during ROS installation
• Live Graph on Kinetic
• Live Graph on Kinetic
• best way to install ROS in Ubuntu 18.04
• best way to install ROS in Ubuntu 18.04
• About Topics and Namespaces
• About Topics and Namespaces
• Importing std_msgs.msg with Python
• Importing std_msgs.msg with Python
• robot_localization: How to state start position (x,y,z,r,p,y) for ekf
• robot_localization: How to state start position (x,y,z,r,p,y) for ekf
• How to use parallel programming in catkin?
• How to use parallel programming in catkin?
• error reporting: ROS_ERROR or error topic
• error reporting: ROS_ERROR or error topic
• Possible to use git submodules for bloom?
• Possible to use git submodules for bloom?
• How can I change the default global path planning algorithm (A* and dijkstra) into my custom path planner (RRT)?
• How can I change the default global path planning algorithm (A* and dijkstra) into my custom path planner (RRT)?
• Why doesn't std_msgs::Float32MultiArray have a Header field?
• Why doesn't std_msgs::Float32MultiArray have a Header field?
• switch between two catkin workspace
• switch between two catkin workspace
• Invalid <node> tag: node name cannot contain a namespace.
• Invalid <node> tag: node name cannot contain a namespace.
• What are the units of Odometry/orientation.z/w and Twist.angular.z fields?
• What are the units of Odometry/orientation.z/w and Twist.angular.z fields?
• How to follow a nav_msgs/path ?
• How to follow a nav_msgs/path ?
• Catkin build fails to find reference to library inside the same package
• Catkin build fails to find reference to library inside the same package
• when and why do we use two or more ros::NodeHandle for one Node?
• when and why do we use two or more ros::NodeHandle for one Node?
• Plugin warning in move_base
• Plugin warning in move_base
• Convert Float32 to C++ float variable
• Convert Float32 to C++ float variable
• Invoking "make -j12 -l12" failed trying to catkin_make glog_catkin
• Invoking "make -j12 -l12" failed trying to catkin_make glog_catkin
• Where does the parameter server store data?
• Where does the parameter server store data?
• Subscribing to the wrong Topic
• Subscribing to the wrong Topic
• How to get only time stamp in a big topic in a command line
• How to get only time stamp in a big topic in a command line
• specify rosbag save path in launchfile
• specify rosbag save path in launchfile
• slam_gmapping installation
• slam_gmapping installation
• Catkin naming conventions issue
• Catkin naming conventions issue
• pcl library linking problem
• pcl library linking problem
• 2D array as service response
• 2D array as service response
• how to communicate between ros and gazebo
• how to communicate between ros and gazebo
• Unique value in multiple nodes
• Unique value in multiple nodes
• build_depend vs build_export_depend vs exec_depend in ROS with Python?
• build_depend vs build_export_depend vs exec_depend in ROS with Python?
• How can i convert a .bag file to .pcd
• How can i convert a .bag file to .pcd
• What is the fix for 'No p gain specified for pid. Namespace: /gazebo_ros_control/pid_gains/back_right_wheel_joint ' ros melodic?
• What is the fix for 'No p gain specified for pid. Namespace: /gazebo_ros_control/pid_gains/back_right_wheel_joint ' ros melodic?
• How to publish topics at specific rate?(Python)
• How to publish topics at specific rate?(Python)
• Costmap and planner configuration from C++ code
• Costmap and planner configuration from C++ code
• What is the best version of ubuntu currently for ros?
• What is the best version of ubuntu currently for ros?
• How to source multiple workspaces from the same terminal?
• How to source multiple workspaces from the same terminal?
• update_frequency vs publish_frequency (costmap parameters)
• update_frequency vs publish_frequency (costmap parameters)
• rosdep init and rosdep update ?
• rosdep init and rosdep update ?
• Catkin_make Error in ros-drivers / velodyne
• Catkin_make Error in ros-drivers / velodyne
• catkin_make unable to find actionlib in its original install location
• catkin_make unable to find actionlib in its original install location
• Is it possible to change color scheme for rviz map display?
• Is it possible to change color scheme for rviz map display?
• package installation
• package installation
• Invoking "make" failed
• Invoking "make" failed
• How to import Python modules to my node?
• How to import Python modules to my node?
• describing layers in costmap .yaml files
• describing layers in costmap .yaml files
• [ROS2] Do these package.xml and CMakeLists.txt tags have alternatives in ament and colcon builds for ROS2?
• [ROS2] Do these package.xml and CMakeLists.txt tags have alternatives in ament and colcon builds for ROS2?
• Adding arguments via command line during roslaunch
• Adding arguments via command line during roslaunch
• xacro: in-order processing became default in ROS MeLodic.
• xacro: in-order processing became default in ROS MeLodic.
• No p gain specififed even when specified in control.yaml
• No p gain specififed even when specified in control.yaml
• start position is off the global costmap? Navigation
• start position is off the global costmap? Navigation
• Catch ctrl-C and Set value
• Catch ctrl-C and Set value
• Set start position of robot within amcl
• Set start position of robot within amcl

● Great Answer   × 22

• What are LaserScan intensities?
• What are LaserScan intensities?
• "use_sim_time" parameter disabled tf
• "use_sim_time" parameter disabled tf
• Load 2D parameter from parameter server
• Load 2D parameter from parameter server
• problem in writing a simple service and client(python)
• problem in writing a simple service and client(python)
• How does ROS work with real/actual robot in general? How's the process when we send a data to the actual robot?
• How does ROS work with real/actual robot in general? How's the process when we send a data to the actual robot?
• Problem with serialization.h
• Problem with serialization.h
• When should I use rosdep and when should I use apt or pip?
• When should I use rosdep and when should I use apt or pip?
• [rospack] Error: package 'image_view' not found
• [rospack] Error: package 'image_view' not found
• creating metapackage
• creating metapackage
• Clearing of obstacle layer in the layered_costmap
• Clearing of obstacle layer in the layered_costmap
• Ask about the usage of the tilde '~'sign
• Ask about the usage of the tilde '~'sign

● Taxonomist   × 1

● Scholar   × 2

• ROS Timer: difference between types of NodeHandles?
• ROS Timer: difference between types of NodeHandles?

● Nice Question   × 6

• ROS Timer: difference between types of NodeHandles?
• ROS Timer: difference between types of NodeHandles?
• When is ${catkin_EXPORTED_TARGETS} needed
• When is ${catkin_EXPORTED_TARGETS} needed
• static_layer gets deleted by obstacle_layer in global_costmap
• static_layer gets deleted by obstacle_layer in global_costmap

● Civic Duty   × 2

• robot_upstart perminantly change ownership
• robot_upstart perminantly change ownership

● Necromancer   × 6

• error in migrating fuerte to hydro, using SR4000
• Using rosbridge protocol to talk with MATLAB
• Rosbridge TCP Error: __init__() got an unexpected keyword argument 'parameters'
• what are difference between soem, ethercat_soem, rtnet and rtt_soem?
• Possible to use git submodules for bloom?
• How to use parallel programming in catkin?

● Citizen Patrol   × 2

• Processing an image outside the Callback function
• Processing an image outside the Callback function

● Associate Editor   × 1

• rostopic pub /topic_name sensor_msgs/JointState [arguments]

● Rapid Responder   × 100

• Live Graph on Kinetic
• best way to install ROS in Ubuntu 18.04
• How to source multiple workspaces from the same terminal?
• how to fix odom and map frame on rviz
• Could S300 expert connect with a laptop via a RS422/USB converter?
• How should I interpret the sensor_msgs/LaserScan.angle_min?
• describing layers in costmap .yaml files
• Driving ROSbot in Gazebo
• How to connect Sick s300 Expert to PC for ROS
• Installing ROS on a tethered system
• Importing std_msgs.msg with Python
• ROS Service in C++ not being built
• Suggestions on using GMapping or AMCL SLAM for Robot in Industrail Use - Case
• ROS Navigation when call rosrun that error.I'ld use chmod +x?
• why isn't catkin_make working?
• conver a python script in to a python class and make the callback function a class member
• switch between two catkin workspace
• Ubuntu 16.04 or Raspbian Jesse for Raspberry Pi 4
• cannot find -lMylib
• What is the /odom topic?
• Header in LaserScan message for SICK S300 Laser
• Problem with Action msg
• Plugin warning in move_base
• Follow the straight global plan
• how to store a ConstPtr msg into a vector?
• Problem compiling node with Geany
• multiple amcl on one odom
• defining a service message with no return value
• Action client wait_for_result() in python
• Is `diagnostics` the recommended system for monitoring sensor data rate?
• ros.org REPs not accessible Error 403 Forbidden
• Catkin build fails to find reference to library inside the same package
• Customising Packages on ROS Tutorial Issue
• How master communicates with other nodes?
• Who publishes the map frame?
• specifying arrow direction
• ROS service with bool as request and bool as response
• why the text color of the frame's name in rviz is white?
• Ros publisher message type for arrays
• conditional <exec_depend> in package.xml
• Do getParamCached() and dynamic_reconfigure have the same functions?
• how to pub array msg?
• Convert Float32 to C++ float variable
• Fine joystick library control
• Using Rospy to check on empty topic
• Subscribing to the wrong Topic
• Confused with raspberry pi ros setup. It seems like I have 3 instalations. Ros Noetic
• How to get only time stamp in a big topic in a command line
• How to subscribe to another node's published topic?
• Syncing/Merging camera and lidar data for a detected object
• What is the functionality of --pause flag in rosbag play cmd ?
• specify rosbag save path in launchfile
• How are LaserScan and global_costmap related?
• how does bloom works for any plateform
• Segmentation fault (core dumped)
• Catkin naming conventions issue
• Could I change the path from continue line to scatter?
• How to integrate PCL library into an existing project?
• how can I make a custom msg struct to publish?
• creating metapackage with catkin-tools
• Can a Custom Message Built In a Workspace Be Used in Another?
• Is necessary openCR for a three omni-wheel robot
• how to communicate between ros and gazebo
• package installation
• [roslaunch] Load parameters in node namespace from outside the node
• ROSCD goes to wrong workspace - ROS Melodic
• Catch ctrl-C and Set value
• Callback rate is faster than the received message
• Instant incorrect laser distance reading in simulation
• How to publish message with several type in yaml syntax
• ImportError: cannot import name Bag
• Service server doesn’t get the subscriber objects readings
• ZeroDivisionError: float division by zero
• How to combine many roslaunch commands?
• I'm trying to assign a value in a callback function and I get error for undendifined reference.
• Costmap and planner configuration from C++ code
• md5sum error between ROS nodes
• how do I publish folder which contains files like python or xml files over ROSTOPIC
• How to prevent the second publisher to publish on the same topic?
• What is the best version of ubuntu currently for ros?
• Error : rospy.init_node() has already been called with different arguments:
• Are ROS messages classes with slots?
• Need help in rospy programming
• Saving rviz plugin configuration
• Waiting for subscriber to connect to /cmd_vel
• How to pass the message as a non-string value for publisher and subscriber
• catkin ws extends from /opt/ros issue
• rosdep install showing independency/not available
• Correct way to use arguments
• Installing ROS indigo on Ubuntu 20.04
• Hi I'm new to ros, I followed a tutorial from The Construct. When i tried to launch gazebo it is showing errors. Please help.
• Calling constructor of custom global planner
• catkin_make unable to find actionlib in its original install location
• Unable to Publish Float64MultiArray in python
• Catkin_make Error in ros-drivers / velodyne
• Is it possible to modify a specification of the real Hokuyo Lidar, not the vitual?
• Cannot retrieve parameters from YAML file (even if the file is found)
• ROS noetic navigation without localization
• Questions Regarding ROS Package Dependencies
• Using Publisher inside a Subscriber callback function

● Student   × 2

• problem with dynamically reconfiguring the footprint on costmaps
• problem with dynamically reconfiguring the footprint on costmaps

● Critic   × 2

• Memory Access Error
• Memory Access Error

● Supporter   × 2

• hokuyo UTM-30LX-EW laser scanner: problems to detect
• hokuyo UTM-30LX-EW laser scanner: problems to detect

● Commentator   × 1

• catkin: build debendencies library of two other libraries

● Popular Question   × 18

• hokuyo_node sending 0.0 measurements -> problems with costmap
• hokuyo_node sending 0.0 measurements -> problems with costmap
• problem with dynamically reconfiguring the footprint on costmaps
• problem with dynamically reconfiguring the footprint on costmaps
• is it possible to have simultaneous calls to a service server from a rospy ServiceProxy in multiple threads?
• is it possible to have simultaneous calls to a service server from a rospy ServiceProxy in multiple threads?
• ROS Timer: difference between types of NodeHandles?
• ROS Timer: difference between types of NodeHandles?
• testing launch files in install_space?
• testing launch files in install_space?
• Can I have a rviz::Tool inside an rviz::Panel?
• Can I have a rviz::Tool inside an rviz::Panel?
• Ethercat interface to elmo motor controllers
• Ethercat interface to elmo motor controllers
• When is ${catkin_EXPORTED_TARGETS} needed
• When is ${catkin_EXPORTED_TARGETS} needed
• static_layer gets deleted by obstacle_layer in global_costmap
• static_layer gets deleted by obstacle_layer in global_costmap

● Great Question   × 2

• static_layer gets deleted by obstacle_layer in global_costmap
• static_layer gets deleted by obstacle_layer in global_costmap

● Favorite Question   × 2

• static_layer gets deleted by obstacle_layer in global_costmap
• static_layer gets deleted by obstacle_layer in global_costmap

● Good Question   × 4

• static_layer gets deleted by obstacle_layer in global_costmap
• static_layer gets deleted by obstacle_layer in global_costmap
• When is ${catkin_EXPORTED_TARGETS} needed
• When is ${catkin_EXPORTED_TARGETS} needed

● Famous Question   × 18

• hokuyo_node sending 0.0 measurements -> problems with costmap
• hokuyo_node sending 0.0 measurements -> problems with costmap
• problem with dynamically reconfiguring the footprint on costmaps
• problem with dynamically reconfiguring the footprint on costmaps
• is it possible to have simultaneous calls to a service server from a rospy ServiceProxy in multiple threads?
• is it possible to have simultaneous calls to a service server from a rospy ServiceProxy in multiple threads?
• ROS Timer: difference between types of NodeHandles?
• ROS Timer: difference between types of NodeHandles?
• Ethercat interface to elmo motor controllers
• Ethercat interface to elmo motor controllers
• Can I have a rviz::Tool inside an rviz::Panel?
• Can I have a rviz::Tool inside an rviz::Panel?
• When is ${catkin_EXPORTED_TARGETS} needed
• When is ${catkin_EXPORTED_TARGETS} needed
• static_layer gets deleted by obstacle_layer in global_costmap
• static_layer gets deleted by obstacle_layer in global_costmap
• testing launch files in install_space?
• testing launch files in install_space?

● Teacher   × 2

• SendingSimpleGoals tutorial: CMaker error
• SendingSimpleGoals tutorial: CMaker error

● Guru   × 11

• "use_sim_time" parameter disabled tf
• Load 2D parameter from parameter server
• problem in writing a simple service and client(python)
• How does ROS work with real/actual robot in general? How's the process when we send a data to the actual robot?
• Problem with serialization.h
• When should I use rosdep and when should I use apt or pip?
• What are LaserScan intensities?
• [rospack] Error: package 'image_view' not found
• creating metapackage
• Clearing of obstacle layer in the layered_costmap
• Ask about the usage of the tilde '~'sign

● Autobiographer   × 2

● Notable Question   × 18

• hokuyo_node sending 0.0 measurements -> problems with costmap
• hokuyo_node sending 0.0 measurements -> problems with costmap
• problem with dynamically reconfiguring the footprint on costmaps
• problem with dynamically reconfiguring the footprint on costmaps
• is it possible to have simultaneous calls to a service server from a rospy ServiceProxy in multiple threads?
• is it possible to have simultaneous calls to a service server from a rospy ServiceProxy in multiple threads?
• ROS Timer: difference between types of NodeHandles?
• ROS Timer: difference between types of NodeHandles?
• Can I have a rviz::Tool inside an rviz::Panel?
• Can I have a rviz::Tool inside an rviz::Panel?
• testing launch files in install_space?
• testing launch files in install_space?
• Ethercat interface to elmo motor controllers
• Ethercat interface to elmo motor controllers
• When is ${catkin_EXPORTED_TARGETS} needed
• When is ${catkin_EXPORTED_TARGETS} needed
• static_layer gets deleted by obstacle_layer in global_costmap
• static_layer gets deleted by obstacle_layer in global_costmap

● Enlightened   × 2

• How can I add C++ optimization flags to ROS
• How can I add C++ optimization flags to ROS

● Good Answer   × 142

• How can I add C++ optimization flags to ROS
• How can I add C++ optimization flags to ROS
• Load 2D parameter from parameter server
• Load 2D parameter from parameter server
• Map_server fails to publish transform
• Map_server fails to publish transform
• How do I know when rosbag finished? (by code - without looking at the terminal)
• How do I know when rosbag finished? (by code - without looking at the terminal)
• Fail to make hector_gazebo_thermal_camera
• Fail to make hector_gazebo_thermal_camera
• reading a file and publishing data to topic
• reading a file and publishing data to topic
• Question about nodes
• Question about nodes
• problem in writing a simple service and client(python)
• problem in writing a simple service and client(python)
• Calling /ardrone/togglecam from python code rather than from terminal
• Calling /ardrone/togglecam from python code rather than from terminal
• Importing a costmap layer from a pgm.
• Importing a costmap layer from a pgm.
• "use_sim_time" parameter disabled tf
• "use_sim_time" parameter disabled tf
• What are LaserScan intensities?
• What are LaserScan intensities?
• ROSARIA catkin_make error
• ROSARIA catkin_make error
• eigenConfig.cmake not found (ROS Indigo)
• eigenConfig.cmake not found (ROS Indigo)
• remapper /scan to /scan2
• remapper /scan to /scan2
• Implementing costmap_2d layer with pre-Hydro costmap.
• Implementing costmap_2d layer with pre-Hydro costmap.
• catkin: build debendencies library of two other libraries
• catkin: build debendencies library of two other libraries
• Local costmap width, height, resolution and origin initializing
• Local costmap width, height, resolution and origin initializing
• Negative values in launch file arguments
• Negative values in launch file arguments
• Relations between odom coordinate and map coordinate system when create a map？
• Relations between odom coordinate and map coordinate system when create a map？
• What is the correct way to commit clean a workspace before commiting?
• What is the correct way to commit clean a workspace before commiting?
• Can Gmapping package in ROS can create map at Runtime
• Can Gmapping package in ROS can create map at Runtime
• [rospack] Error: package 'image_view' not found
• [rospack] Error: package 'image_view' not found
• How does ROS work with real/actual robot in general? How's the process when we send a data to the actual robot?
• How does ROS work with real/actual robot in general? How's the process when we send a data to the actual robot?
• Clearing of obstacle layer in the layered_costmap
• Clearing of obstacle layer in the layered_costmap
• Checking whether a particular position in the map has any obstacle
• Checking whether a particular position in the map has any obstacle
• `ROS_INFO_STREAM_NAMED(name, msg)` isn't streaming to the appropriate name
• `ROS_INFO_STREAM_NAMED(name, msg)` isn't streaming to the appropriate name
• Problem with serialization.h
• Problem with serialization.h
• amcl demo: map_server could not open yaml file (yaml file exists)
• amcl demo: map_server could not open yaml file (yaml file exists)
• how to send a predefined path to a local planner?
• how to send a predefined path to a local planner?
• What is the difference DWAPlannerROS/global_plan and DWAPlannerROS/local_plan?
• What is the difference DWAPlannerROS/global_plan and DWAPlannerROS/local_plan?
• Is there only one catkin_ws can be active ?
• Is there only one catkin_ws can be active ?
• CMakeList.txt
• CMakeList.txt
• How to solve Warning with /imu_frame using robot_localization package?
• How to solve Warning with /imu_frame using robot_localization package?
• What is the "center of the robot" in costmap_2d's footprint?
• What is the "center of the robot" in costmap_2d's footprint?
• transform geometry_msgs::TransformStamped to tf2::Transform transform
• transform geometry_msgs::TransformStamped to tf2::Transform transform
• When should I use rosdep and when should I use apt or pip?
• When should I use rosdep and when should I use apt or pip?
• rosout node and rosout topic
• rosout node and rosout topic
• gmapping: disable TF publishing
• gmapping: disable TF publishing
• Check if messages are published on a topic
• Check if messages are published on a topic
• creating metapackage
• creating metapackage
• Could not find a package configuration file provided by "controller_manager"
• Could not find a package configuration file provided by "controller_manager"
• catkin_create_pkg: error: argument --rosdistro is required
• catkin_create_pkg: error: argument --rosdistro is required
• best way to install ROS in Ubuntu 18.04
• best way to install ROS in Ubuntu 18.04
• access parameters in service function
• access parameters in service function
• Is there any actual difference between a topic and a service?
• Is there any actual difference between a topic and a service?
• Dynamic reconfigure headers not generated
• Dynamic reconfigure headers not generated
• robot_localization: How to state start position (x,y,z,r,p,y) for ekf
• robot_localization: How to state start position (x,y,z,r,p,y) for ekf
• Still cannot include library to package from another package
• Still cannot include library to package from another package
• specify rosbag save path in launchfile
• specify rosbag save path in launchfile
• how to communicate between ros and gazebo
• how to communicate between ros and gazebo
• Using a action's result - Pt. 2
• Using a action's result - Pt. 2
• Ask about the usage of the tilde '~'sign
• Ask about the usage of the tilde '~'sign
• How to follow a nav_msgs/path ?
• How to follow a nav_msgs/path ?
• Costmap and planner configuration from C++ code
• Costmap and planner configuration from C++ code
• slam_gmapping installation
• slam_gmapping installation
• How to pause a mobile robot during navigation?
• How to pause a mobile robot during navigation?
• What is the best version of ubuntu currently for ros?
• What is the best version of ubuntu currently for ros?
• Problems with .rosinstall when calling wstool merge
• Problems with .rosinstall when calling wstool merge
• error reporting: ROS_ERROR or error topic
• error reporting: ROS_ERROR or error topic
• how to use callback() with python
• how to use callback() with python
• Is it possible to change color scheme for rviz map display?
• Is it possible to change color scheme for rviz map display?
• Converting ros::time to double value without uint_t
• Converting ros::time to double value without uint_t
• New node and custom msg giving a data_class error
• New node and custom msg giving a data_class error
• when and why do we use two or more ros::NodeHandle for one Node?
• when and why do we use two or more ros::NodeHandle for one Node?
• Convert Float32 to C++ float variable
• Convert Float32 to C++ float variable
• How to source multiple workspaces from the same terminal?
• How to source multiple workspaces from the same terminal?
• Build RViz plugin from .ui file
• Build RViz plugin from .ui file
• Invalid <node> tag: node name cannot contain a namespace.
• Invalid <node> tag: node name cannot contain a namespace.
• rosdep init and rosdep update ?
• rosdep init and rosdep update ?
• How to change the topic name for publishing occupancy grid using map_server?
• How to change the topic name for publishing occupancy grid using map_server?

● Editor   × 2

• Gazebo4 packages installed with rosdep
• Gazebo4 packages installed with rosdep

● Enthusiast   × 1

● Organizer   × 2

• gmapping_demo error
• gmapping_demo error