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2013-09-24 10:32:29 -0500 answered a question Warning about TF to MSG

With a deep investigation into the source code of viso2, my colleague and I finally solved this issue by calling a service called resetPose. So basically, as soon as the node mono_odometer has been brought up, open a new terminal and type "rosservice call /mono_odometer/reset_pose". For more information, please refer to the reset_pose service callback function which is in odometer_pose.h file. Hope this answer will help those who have the same issue as stated above.

2013-07-08 23:13:18 -0500 commented question libviso2 stereo result doesn't match mono result

Hi Jia,

I am also trying to use libviso2 and viso2_ros and having the same questions with yours: (warning-about-tf-to-msg) and (viso2 mono_odometer data problem). From your current question, it seems that you made them work, would you please tell how you achieved it? Many thanks in advance!

2013-07-08 23:04:55 -0500 answered a question libviso2 stereo result doesn't match mono result

Hi Jia,

I have paid attention to your ROS questions about using viso2_ros package and their corresponding answers made by other experts. I am also trying to use this package and having the same questions with yours: http://answers.ros.org/question/65331/warning-about-tf-to-msg/ (warning about tf to msg) and http://answers.ros.org/question/65260/viso2-mono_odometer-data-problem/ (viso2-mono_odometer-data-problem). From your current question (libviso2 stereo result doesn't match mono result), it seems that you made libviso2 and viso2_ros package work, would you please tell how you achieved it? Many thanks in advance!

2013-07-01 10:29:26 -0500 asked a question ipc_bridge does not support tf/tfMessage

Hi, there,

I was trying to use ipc_bridge to publish tf/tfMessage, however, it seems that ipc_bridge does not support tf/tfMessage at all although its official site lists tf/tfMessage as one of the supported messages (https://alliance.seas.upenn.edu/~meam620/wiki/index.php?n=Roslab.IpcBridge), because I couldn't find any code related to tf/tfMessage. Has any one run into this issue? If yes, how have you solved it?

Many thanks in advance.

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2013-01-07 07:45:11 -0500 answered a question rosrun rviz failed in Groovy

Thanks. I tried "sudo pip uninstall rosdep" and the rosdep was removed successfully, as files in the directory "/usr/local/lib/python2.7/dist-packages" disappeared.

However, the command "rosrun rviz rviz" still leads to the following errors:

Traceback (most recent call last): File "/usr/lib/pymodules/python2.7/rosdep2/rospack.py", line 55, in init_rospack_interface lookup = _get_default_RosdepLookup(Options()) File "/usr/lib/pymodules/python2.7/rosdep2/main.py", line 108, in _get_default_RosdepLookup lookup = RosdepLookup.create_from_rospkg(sources_loader=sources_loader) File "/usr/lib/pymodules/python2.7/rosdep2/lookup.py", line 319, in create_from_rospkg lookup._load_all_views(loader=sources_loader) File "/usr/lib/pymodules/python2.7/rosdep2/lookup.py", line 464, in _load_all_views self._load_view_dependencies(resource_name, loader) File "/usr/lib/pymodules/python2.7/rosdep2/lookup.py", line 486, in _load_view_dependencies loader.load_view(view_key, db, verbose=self.verbose) File "/usr/lib/pymodules/python2.7/rosdep2/sources_list.py", line 525, in load_view rosdep_db.set_view_data(view_name, source.rosdep_data, view_dependencies, view_name) File "/usr/lib/pymodules/python2.7/rosdep2/model.py", line 89, in set_view_data self._rosdep_db[view_name] = RosdepDatabaseEntry(rosdep_data.copy(), view_dependencies, origin) AttributeError: 'NoneType' object has no attribute 'copy'

[rospack] Error: could not call python function rosdep2.rospack.init_rospack_interface'

terminate called after throwing an instance of 'pluginlib::LibraryLoadException' what(): rospack could not find the rviz package containing rviz::Panel Aborted (core dumped)

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2013-01-06 22:54:35 -0500 commented answer rosrun rviz failed in Groovy

Thanks, as you suggested, I tried "sudo apt-get install python-rosdep python-wstool build-essential", and rosdep was successfully installed. But the same problem remained. However, I tried installing ros fuerte and "rosrun rviz rviz" worked well for fuerte. I am still struggled.

2013-01-06 11:06:38 -0500 asked a question rosrun rviz failed in Groovy

Hi,

I upgraded my Ubuntu from 11.10 to 12.04 by using "update manager", and in updated 12.04, I installed Groovy using commands "sudo apt-get update" and "sudo apt-get install ros-groovy-desktop-full". There were not any errors during the installation. However, my entering "rosrun rviz rviz" in the terminal leads to:

[ INFO] [1357508126.785180749]: rviz version 1.9.18
[ INFO] [1357508126.785299200]: compiled against OGRE version 1.7.4 (Cthugha)
ImportError: No module named rospack
[rospack] Error: could not find python module 'rosdep2.rospack'. is rosdep up-to-date (at least 0.10.4)?
[librospack]: error while executing command
terminate called after throwing an instance of 'pluginlib::LibraryLoadException'
  what():  rospack could not find the rviz package containing rviz::Panel
Aborted (core dumped).

Any one who can help me out? Thanks.

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2012-07-30 11:14:27 -0500 asked a question gazebo assertion failed

Hello, I am running hector_quadrotor_demo with "indoor_slam_gazebo.launch" launch file according to this tutorial http://www.ros.org/wiki/hector_quadrotor/Tutorials/Quadrotor%20indoor%20SLAM%20demo, it gives the following error:

*gazebo: /tmp/buildd/ros-electric-visualization-common-1.6.3/debian/ros-electric-visualization-common/opt/ros/electric/stacks/visualization_common/ogre/build/ogre_src_v1-7-3/OgreMain/include/OgreAxisAlignedBox.h:252: void Ogre::AxisAlignedBox::setExtents(const Ogre::Vector3&, const Ogre::Vector3&): Assertion `(min.x <= max.x && min.y <= max.y && min.z <= max.z) && "The minimum corner of the box must be less than or equal to maximum corner"' failed. ================================================================================REQUIRED process [gazebo-2] has died! process has died [pid 12268, exit code -6]. log files: /home/ling/.ros/log/a7ab0718-da89-11e1-8923-f04da2adc6ca/gazebo-2.log

Initiating shutdown!

[hector_geotiff_node-8] killing on exit [hector_trajectory_server-7] killing on exit [hector_mapping-6] killing on exit [ground_truth_to_tf-5] killing on exit [robot_state_publisher-4] killing on exit [spawn_robot-3] killing on exit [gazebo-2] killing on exit Traceback (most recent call last): File "/opt/ros/electric/stacks/simulator_gazebo/gazebo/scripts/spawn_model", line 330, in <module> sm.callSpawnService() File "/opt/ros/electric/stacks/simulator_gazebo/gazebo/scripts/spawn_model", line 237, in callSpawnService rospy.wait_for_service('/gazebo/get_physics_properties') File "/opt/ros/electric/stacks/ros_comm/clients/rospy/src/rospy/impl/tcpros_service.py", line 156, in wait_for_service raise ROSInterruptException("rospy shutdown") rospy.exceptions.ROSInterruptException: rospy shutdown [rosout-1] killing on exit [master] killing on exit shutting down processing monitor... ... shutting down processing monitor complete done**

Can any one tell why? And how to solve this problem?

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2012-04-29 11:47:11 -0500 asked a question Failed to find rosdep joystick for package teleop_base on OS.....

Hi, all, I was trying to follow the tutorial on simulating one robot using stage(link text), when I run "rosmake teleop_base", it pop up the following errors: Failed to find rosdep joystick for package teleop_base on OS:ubuntu version:oneiric [ rosmake ] rosdep check failed to find system dependencies: joystick

I tried to find the joystick dependency on ROS website, but I could not find it.

Can any one give a solution to this problem? Thanks.