张京林's profile - activity

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2020-09-09 21:59:44 -0500	received badge	● Good Answer (source)
2020-04-30 08:15:44 -0500	received badge	● Nice Answer (source)
2017-10-14 07:18:51 -0500	received badge	● Necromancer (source)
2017-10-14 07:18:51 -0500	received badge	● Teacher (source)
2017-08-08 05:22:23 -0500	answered a question	Can not link to pcl library. target_link_libraries( ... ${PCL_LIBRARIES}) add${PCL_LIBRARIES} may help
2017-01-10 02:48:43 -0500	commented answer	Format of depth value openni2_camera I try to use it to convert camera/depth/image_raw, which is 16UC1 data, to OpenCV format, but it doesn't work.
2017-01-10 02:48:43 -0500	received badge	● Commentator
2016-11-22 07:41:17 -0500	commented answer	[openni_tracker] InitFromXml failed: Can't create any node of the requested type! I also meet the problem: `NITE is likely missing: Please install NITE >= 1.5.2.21.` But when I remove and reinstall the NITE and Sensor and change the usb port by many times, it worked. I just run two commands: `roscore rosrun openni_tracker openni_tracker`
2016-02-24 01:35:36 -0500	received badge	● Enthusiast
2016-02-23 05:18:35 -0500	commented answer	SICK LMS500 connection and drivers @TimElery Hi, Tim, maybe you need this:Type: USB driver Name: USB driver Version: 2.06.02 Software category: Driver Size: 1.13 MB Language: English Product family LMS5xx
2015-12-23 03:25:00 -0500	commented answer	nav2d Navigator failing to create path But how to set those three frames "laser_frame", "robot_frame" and "odometry_frame" ? I meet the same problem.
2015-12-23 02:43:33 -0500	answered a question	i can't launch karto_slam on ros indigo I install it from source too, but did you get the /map topic? I have published the /scan and /tf topic but the /map topic is blank.
2015-12-23 02:37:24 -0500	answered a question	problems launching slam_karto (ros-hydro) If you install from source, you need to change the karto_slam.launch in catkin_ws/src/slam_karto/launch: The package name is wrong in the launch file `<node pkg="karto" type="slam_karto" name="slam_karto" output="screen">` Please change the `pkg="karto"` to `pkg="slam_karto"`,so that the launch file could find the node in slam_karto package.
2015-12-16 01:12:44 -0500	commented answer	i can't launch karto_slam on ros indigo But how to install it from source? I download the slam_karto package in the catkin_ws/src, but failed to catkin_make this package.
2015-10-26 20:58:31 -0500	answered a question	What should I expect from Turtlebot calibration? / How do I know if my Turtlebot is broken? Maybe you could restart the robot. Sometimes I have this problem, but when I restart my turtlebot, it's gone. It's nomal If your turtlebot turn 720° continuously in a routine, where each routine begins with "Aligning base with wall" and ends with IMU and odom error output.
2015-10-26 20:19:50 -0500	commented answer	Is an IMU required to run Turtlebot stack? But how to set the bias in the IMU? After the calibration node estimating the imu drift, which parameter should I change?
2015-10-26 03:04:45 -0500	commented answer	Gyro and Odometry Calibration Not Effective? 你在minimal.launch里面使用标签设定Gyro_scale_correction的值为2.4，Gyro measurement range的值为250就可以了
2014-08-01 02:43:06 -0500	received badge	● Supporter (source)
2014-07-25 04:59:10 -0500	commented answer	rosmsg show beginner_tutorials/Num (error???) OK, thank you very much!
2014-07-25 04:36:07 -0500	commented answer	rosmsg show beginner_tutorials/Num (error???) Should I use the command below, if I want to add it to the shell startup script? echo "source ~/catkin_ws/devel/setup.bash" >> ~/.bashrc source ~/.bashrc