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2022-01-27 01:06:12 -0500	asked a question	rosapi node is still alive while the service server inside won't response. rosapi node is still alive while the service server inside won't response. hi, we are working with the official rosapi n
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2017-12-05 09:04:39 -0500	asked a question	How to add the plan to the global planner. How to add the plan to the global planner. I want to add a plan(already done) to the global planner. It will task much t
2017-12-05 01:04:21 -0500	received badge	● Popular Question (source)
2017-12-05 00:14:46 -0500	commented answer	How to add a linked library for a cpp file in the CMakelists. But this jsoncpp is only a jsoncpp.a which is a static library. I want to add it in my path planner, it seems it cannot
2017-12-05 00:11:07 -0500	commented answer	How to add a linked library for a cpp file in the CMakelists. Thanks Akif. I've tried your method recently. It didn't work because it tells me an error: undefined reference to 'json
2017-12-04 19:50:21 -0500	edited question	cmakelists compiling questions cmakelists compiling questions Hi, this is a new linux user. When I compile my CMakelists, it gives me this error. /usr
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2017-12-04 04:30:34 -0500	asked a question	cmakelists compiling questions cmakelists compiling questions Hi, this is a new linux user. I want to add my own global planner into the ros navigation
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2017-10-07 08:09:22 -0500	marked best answer	how to prevent navigate backwards, and only rotate and move forwards for navigation? Hi, I'm using navigation stack and using teb_local_planner for path planning. But when I use it, I found there's problem for the robot because it will move backwards while my laser can only detect the forward area. Is there any parameter that I can adjust to make it only rotate and move forward? I've searched on the website, someone said they change the min_vel to negative, and someone said to change the escape_vel to 0. I have no idea about these, and maybe other parameters I need to know in advance? Anyone familiar with teb_local_planner? I'm glad to hear your advice. Thanks.
2017-10-07 08:09:13 -0500	commented answer	how to prevent navigate backwards, and only rotate and move forwards for navigation? Never thought about this solution. Sounds pretty reasonable, I'll do as what you have said by changing these parameters
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2017-10-06 11:57:06 -0500	asked a question	how to prevent navigate backwards, and only rotate and move forwards for navigation? how to prevent navigate backwards, and only rotate and move forwards for navigation? Hi, I'm using navigation stack and
2017-07-31 06:53:51 -0500	received badge	● Popular Question (source)
2017-07-27 06:44:02 -0500	marked best answer	How to add a linked library for a cpp file in the CMakelists. Hi, this is a new user to use Cmakelists. I want to use a C++ file which can help me analysis the json file. Normally, when I make it executable, I run g++ json.cpp -o -ljson However, when I tried to add the c++ file in the ros package, I have some problems to make them. Here is my original makefile: `LIB=-L/usr/local/lib/libjson/ -ljson haha: a.o g++ -o a -std=c++0x a.o $(LIB) sdfds: a.cpp g++ -c a.cpp # dfasasdf: # rm a.o a clean: rm edit a.o` Here is my CMakelist.txt: cmake_minimum_required(VERSION 2.8.3) project(rosauth) ## Find catkin macros and libraries ## if COMPONENTS list like find_package(catkin REQUIRED COMPONENTS xyz) ## is used, also find other catkin packages find_package(catkin REQUIRED COMPONENTS roscpp message_generation rostest) ####################################### ## Declare ROS messages and services ## ####################################### ## Generate services in the 'srv' folder add_service_files( FILES Authentication.srv ) ## Generate added messages and services with any dependencies listed here generate_messages( DEPENDENCIES ) ################################################### ## Declare things to be passed to other projects ## ################################################### ## LIBRARIES: libraries you create in this project that dependent projects also need ## CATKIN_DEPENDS: catkin_packages dependent projects also need ## DEPENDS: system dependencies of this project that dependent projects also need catkin_package(CATKIN_DEPENDS roscpp message_runtime) ########### ## Build ## ########### include_directories( ${catkin_INCLUDE_DIRS} ) include_directories( /opt/JSON/jsoncpp-src-0.5.0/libs/linux-gcc-4.8/ ) ## Declare a cpp executable add_executable(ros_mac_authentication src/ros_mac_authentication.cpp) ## Specify libraries to link a library or executable target against target_link_libraries(ros_mac_authentication ${catkin_LIBRARIES} crypto ) add_dependencies(ros_mac_authentication ${PROJECT_NAME}_gencpp) ############# ## Install ## ############# ## Mark executables and/or libraries for installation install(TARGETS ros_mac_authentication RUNTIME DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION} ) ############# ## Testing ## ############# if(CATKIN_ENABLE_TESTING) ## Add gtest based cpp test target and link libraries add_executable(ros_mac_authentication_test test/ros_mac_authentication_test.cpp) add_dependencies(ros_mac_authentication_test ${PROJECT_NAME}_gencpp) target_link_libraries(ros_mac_authentication_test ${catkin_LIBRARIES} ${GTEST_LIBRARIES} crypto dl pthread) add_rostest(test/ros_mac_authentication.test) endif() add_executable(json src/json.cpp ) add_dependencies(json ${${PROJECT_NAME}_EXPORTED_TARGETS} ${catkin_EXPORTED_TARGETS}) target_link_libraries(json ${catkin_LIBRARIES} json_linux-gcc-4.8_libmt ) And I catkin_make it. it gives me this hint. Linking CXX executable /home/jimmy/catkin_ws/devel/lib/rosauth/json Scanning dependencies of target sick_tim310s01 Scanning dependencies of target rbx2_utils_generate_messages Scanning dependencies of target sick_tim310 Scanning dependencies of target sick_tim310_1130000m01 Scanning dependencies of target sick_tim551_2050001 Scanning dependencies of target sick_tim_datagram_test Scanning dependencies of target amcl [ 84%] Built target rbx2_utils_generate_messages Scanning dependencies of target robot_pose_ekf_gencpp [ 84%] Built target robot_pose_ekf_gencpp Scanning dependencies of target robot_pose_ekf_generate_messages [ 84%] Built target robot_pose_ekf_generate_messages /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 0 has invalid symbol index 11 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 1 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 2 has invalid symbol index 2 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 3 has invalid symbol index 2 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 4 has invalid symbol index 11 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 5 has invalid symbol index 13 /usr/bin/ld ... (more)
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2017-07-26 02:24:08 -0500	asked a question	How to add a linked library for a cpp file in the CMakelists. How to add a linked library for a cpp file in the CMakelists. Hi, this is a new user to use Cmakelists. I want to use a
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2017-03-16 22:26:39 -0500	answered a question	ROSJava installation problem It seems this source installation doesn't work, so I try the deb installation. Let's see what happened...
2017-03-16 06:23:19 -0500	asked a question	ROSJava installation problem Hi, I want to install rosjava in my labtop. And I follow the instructions http://wiki.ros.org/rosjava/Tutorials... And in step 3.3, When I input: wstool merge https://raw.githubusercontent.com/me/... I got the error: ERROR in config: Unable to download URL [ https://raw.githubusercontent.com/me/... ]: HTTP Error 404: Not Found It seems the address is not existed any more. Anyone has the idea what problem is this? How can I solve this problem?
2017-03-10 21:52:17 -0500	answered a question	kinect 2 not working with ROS The system tells me there's something wrong with the opencl. I will tell you the progress later. Anyone who has met the same problem are welcome to share their experience.
2017-03-10 01:19:15 -0500	asked a question	kinect 2 not working with ROS Hi, I have a problem to use kinect2 in my ROS and look for lots of ways to configure that but still cannot. Firstly, I follow the instructions from: https://github.com/OpenKinect/libfree... This link is the kinect driver in linux. It seems that everything works fine except *sudo dpkg -i debs/{libva,i965}deb; sudo apt-get install -f it tells me that it doesn't contain libva and i965 directory, and fails. I used another way to install them: sudo apt-get install libva-dev libjpeg-dev I skipped this step, and followed the instruction to the end: ./Protonect And this gives me four images which includes depth image and RGB image. However, I noticed that, when I executed this command, the output in the screen shows: jimmy@eaibot:~/libfreenect2/bin$ ./Protonect Version: 0.2.0 Environment variables: LOGFILE=<protonect.log> Usage: ./Protonect [-gpu=<id>] [gl \| cl \| clkde \| cuda \| cudakde \| cpu] [<device serial="">] `[-noviewer] [-norgb \| -no` depth] [-help] [-version] `[-frames <number of frames to process>]` To pause and unpause: pkill -USR1 Protonect [Info] [Freenect2Impl] enumerating devices... [Info] [Freenect2Impl] 13 usb devices connected [Info] [Freenect2Impl] found valid Kinect v2 @4:9 with serial 002305464947 [Info] [Freenec t2Impl] found 1 devices libva info: VA-API version 0.35.0 libva info: va_getDriverName() returns 1 libva error: va_getDriverName() failed with operation failed,driver_name=i965** [Error] [VaapiRgbPacketProcessorImpl] vaInitialize(display, &major_ver, &minor_ver): operation failed [Info] [Freenec t2DeviceImpl] opening... [Info] [Freenect2DeviceImpl] transfer pool sizes rgb: 2016384 ir: 60833792 [Info] [Freenect2DeviceImpl] opened [Info] [Freenect2DeviceImpl] starting... [Debug] [Freenect2DeviceImpl] status 0x090000: 9729 [Debug] [Freenect2DeviceImpl] status 0x090000: 9731 [Info] [Freenect2DeviceImpl] submitting rgb transfers... [Info] [Freenect2DeviceImpl] submitting depth transfers... [Info] [Freenect2DeviceImpl] started device serial: 002305464947 device fi rmware: 4.0.3911.0 [Debug] [DepthPacketStreamParser] not all subsequences received 0 [Debug] [DepthPacketStreamParser] not all subsequences received 1008 [Debug] [DepthPacketStreamParser] skipping depth packet [Debug] [DepthPacketStreamParser] skipping depth packet [Info] [DepthPa cketStreamParser] 2 packets were lost [Debug] [DepthPacketStreamParser] skipping depth packet [Info] [DepthPacketStreamParser] 1 packets were lost [Debug] [DepthPacketStreamParser] skipping depth packet [Debug] [DepthPacketStreamParser] skipping depth packet [Debug] [DepthPacketStreamParser] skipping depth packet [Debug] [DepthPacketStreamParser] skipping depth packet ^C[Info] [Freenect2DeviceImpl] stopping... [Info] [Freenect2DeviceImpl] canceling rgb transfers... [Info] [Freenect2DeviceImpl] canceling depth transfers... [Info] [Freenect2DeviceImpl] stopped [Info] [Freenect2DeviceImpl] closing... [Info] [Freene ct2DeviceImpl] releasing usb interfaces... [Info] [Freenect2DeviceImpl] deallocating usb transfer pools... [Info] [Freenect2DeviceImpl] closing usb device... [Info] [Freenect2DeviceImpl] closed [Info] [Freenect2DeviceImpl] closing... [Info] [Freenect2DeviceImpl] already closed, doing nothing From here, it shows there's some problem with the libva, however, I don't understand what the reminders mean. I used to be happy with the image and continue to work on the ROS. and the ROS results turn to be fairly disappointing! I found a kinect ROS driver which is called iai-kinect2: https://github.com/code-iai/iai_kinect2* And it fails when I run roslaunch kinect2_bridge kinect2_bridge.launch This is the main problem.(I want to show you the overall message from the screen, but sorry, I don't know how.) And it shows me no message and always shows some problems: [Info] [OpenCLDepthPacketProcessorImpl] building OpenCL ... (more)
2017-03-09 23:51:30 -0500	asked a question	kinect 2 not working with ROS Hi, I have a problem to use kinect2 in my ROS and look for lots of ways to configure that but still cannot. Firstly, I follow the instructions from: https://github.com/OpenKinect/libfree... This link is the kinect driver in linux. It seems that everything works fine except *sudo dpkg -i debs/{libva,i965}deb; sudo apt-get install -f it tells me that it doesn't contain libva and i965 directory, and fails. I used another way to install them: sudo apt-get install libva-dev libjpeg-dev I skipped this step, and followed the instruction to the end: ./Protonect And this gives me four images which includes depth image and RGB image. However, I noticed that, when I executed this command, the output in the screen shows: jimmy@eaibot:~/libfreenect2/bin$ ./Protonect Version: 0.2.0 Environment variables: LOGFILE=<protonect.log> Usage: ./Protonect [-gpu=<id>] [gl \| cl \| clkde \| cuda \| cudakde \| cpu] [<device serial="">] `[-noviewer] [-norgb \| -no` depth] [-help] [-version] `[-frames <number of frames to process>]` To pause and unpause: pkill -USR1 Protonect [Info] [Freenect2Impl] enumerating devices... [Info] [Freenect2Impl] 13 usb devices connected [Info] [Freenect2Impl] found valid Kinect v2 @4:9 with serial 002305464947 [Info] [Freenec t2Impl] found 1 devices libva info: VA-API version 0.35.0 libva info: va_getDriverName() returns 1 libva error: va_getDriverName() failed with operation failed,driver_name=i965** [Error] [VaapiRgbPacketProcessorImpl] vaInitialize(display, &major_ver, &minor_ver): operation failed [Info] [Freenec t2DeviceImpl] opening... [Info] [Freenect2DeviceImpl] transfer pool sizes rgb: 2016384 ir: 60833792 [Info] [Freenect2DeviceImpl] opened [Info] [Freenect2DeviceImpl] starting... [Debug] [Freenect2DeviceImpl] status 0x090000: 9729 [Debug] [Freenect2DeviceImpl] status 0x090000: 9731 [Info] [Freenect2DeviceImpl] submitting rgb transfers... [Info] [Freenect2DeviceImpl] submitting depth transfers... [Info] [Freenect2DeviceImpl] started device serial: 002305464947 device fi rmware: 4.0.3911.0 [Debug] [DepthPacketStreamParser] not all subsequences received 0 [Debug] [DepthPacketStreamParser] not all subsequences received 1008 [Debug] [DepthPacketStreamParser] skipping depth packet [Debug] [DepthPacketStreamParser] skipping depth packet [Info] [DepthPa cketStreamParser] 2 packets were lost [Debug] [DepthPacketStreamParser] skipping depth packet [Info] [DepthPacketStreamParser] 1 packets were lost [Debug] [DepthPacketStreamParser] skipping depth packet [Debug] [DepthPacketStreamParser] skipping depth packet [Debug] [DepthPacketStreamParser] skipping depth packet [Debug] [DepthPacketStreamParser] skipping depth packet ^C[Info] [Freenect2DeviceImpl] stopping... [Info] [Freenect2DeviceImpl] canceling rgb transfers... [Info] [Freenect2DeviceImpl] canceling depth transfers... [Info] [Freenect2DeviceImpl] stopped [Info] [Freenect2DeviceImpl] closing... [Info] [Freene ct2DeviceImpl] releasing usb interfaces... [Info] [Freenect2DeviceImpl] deallocating usb transfer pools... [Info] [Freenect2DeviceImpl] closing usb device... [Info] [Freenect2DeviceImpl] closed [Info] [Freenect2DeviceImpl] closing... [Info] [Freenect2DeviceImpl] already closed, doing nothing From here, it shows there's some problem with the libva, however, I don't understand what the reminders mean. I used to be happy with the image and continue to work on the ROS. and the ROS results turn to be fairly disappointing! I found a kinect ROS driver which is called iai-kinect2: https://github.com/code-iai/iai_kinect2* And it fails when I run roslaunch kinect2_bridge kinect2_bridge.launch This is the main problem.(I want to show you the overall message from the screen, but sorry, I don't know how.) And it shows me no message and always shows some problems: [Info] [OpenCLDepthPacketProcessorImpl] building OpenCL ... (more)