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2018-08-05 17:48:35 -0500	received badge	● Famous Question (source)
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2017-05-18 21:28:10 -0500	asked a question	when ros statistics send parameters when establish a TCP connection when ros statistics send parameters when establish a TCP connection We have two ROS nodes: one node called A runs ROS Ki
2017-02-15 13:29:17 -0500	answered a question	I would like to ask some help to manipulate the youBot using ros kinetic I encounter the same situation, If any one can give some help and suggestion?
2016-10-21 12:17:45 -0500	received badge	● Taxonomist
2016-09-29 11:15:39 -0500	received badge	● Notable Question (source)
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2016-02-17 00:01:48 -0500	asked a question	Moveit with multiple rviz I'm using moveit trying to robot arm, For some purpose, I need to connect two rviz to the same master. When I operate in one rviz window, two rviz simulation robot will move. Is there anyway I can only let the rviz window I operate move, the another rviz will not move.
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2016-02-08 20:30:59 -0500	asked a question	difference of advertiseService between class methods and function callback. ROS run through launch file specify the node "surface_service" in namespace "opnear3". the node "surface_service" has the function to provide the service "print_service", the code is below, the callback signature is from class methods: ros::NodeHandle nh; ros::ServiceServer surface_server_; surface_server_ = nh.advertiseService( "print_service", &xxxx::select_callback, this); then the name of service generated will be "/print_service" But I noticed if I use callback signature from function like: ros::NodeHandle nh; ros::ServiceServer surface_server_; surface_server_ = nh.advertiseService( "print_service", select_callback); Then the name of service generated will be "/opnear3/surface_service/print_service" Could anybody help to explain this? for the class methods call scenario ,how can I get the same service like function callback? Thanks
2016-02-05 09:31:37 -0500	answered a question	service didn't show namespace. I did try to put in the group, looks like it doesn't help.
2016-02-05 04:47:23 -0500	received badge	● Popular Question (source)
2016-02-04 13:50:31 -0500	commented question	service didn't show namespace. Because I want to get another service like /opnear4/select_service by running same ROS node in different namespace, is there any way to create service with namespace on it?
2016-02-04 13:32:49 -0500	asked a question	service didn't show namespace. launch file specify the node "surface_service" in namespace "opnear3". the node "surface_service" has the function to provide one service "select service" ros::ServiceServer surface_server_; surface_server_ = nh.advertiseService( "select_service", &xxxx::select_callback, this); roslaunch launch file, I'm expecting the service name of "select_service" will be /opnear3/select_service when using rosservice list. in stead, in only shows /select_service.
2016-01-21 01:51:51 -0500	received badge	● Popular Question (source)
2016-01-20 16:59:21 -0500	asked a question	convert from int32 to int How to compare int32 with int or convert int32 to int? Looks like No working this way: Int = (int) Int32;