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2016-07-28 12:41:33 -0500 | asked a question | rosbag 'UnicodeDecodeError' I have some rosbags. Most of them seem to be okay according to 'rosbag check <file>'. But a few of them cause the check to be aborted in the middle of the bag with the error below. What is the best way to avoid this decoding error? |
2016-06-18 05:02:18 -0500 | commented answer | Automated rosbag on start up Thanks for the pointer. I eventually got it working with Upstart instead of Systemd since it was used on my system. |
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2016-06-16 10:20:30 -0500 | asked a question | Automated rosbag on start up My plan is to use a remote computer to create a rosbag. I was wondering what is the best practice to automatically start a rosbag record instance after boot on an Ubuntu 14.04 Odroid system. Any experiences ? |
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2015-06-26 09:22:07 -0500 | asked a question | Cannot launch PR2 navigation under Hydro-simulation Hi, when trying to run the PR2 navigation under Hydro the laser_filters die always. It's namely the scan_to_cloud_filter_chain node form the laser_filters package. To reproduce, do the following under Hydro: The latter leads to the following error: |
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2015-01-09 09:31:58 -0500 | commented answer | How to run a ROS service call in another thread with boost Hi Martin, Thanks!
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2015-01-09 03:36:02 -0500 | asked a question | How to run a ROS service call in another thread with boost Hi, my node as a class which calls a service. During that service call it needs to get notified by a topic. The callback is set up respectively. The problem is that during the service call no messages are received. I suspect that the node is blocked by the service call and cannot handle any callback calls. They just pop up after the service call has terminated. Below is a similar example of that node. When trying to put the service call in another boost thread compilation leads to the error (see below) Changed to: Error: Any hints? Thanks |
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2014-04-01 02:01:32 -0500 | commented answer | Cannot rosmake teleop_base, getting fatal error in Fuerte This should be then: sensor_msgs::Joy::ConstPtr& joy_msg |
2014-01-28 17:24:56 -0500 | marked best answer | RViz Camera View is up-side down Hi all, We have mounted an Kinect (to be precise an Asus Xtion Live Pro) sensor up-side down onto our PR2. We added the appropriate config (camera frames) into the robot.xml (via the python script provided at the ROS wiki). Furthermore the TF (rpy angles) were modified and it was verified that the point cloud was indeed at the right orientation (regarding the robot) with RViz. Nevertheless the camera view (2D) in RViz is still up-side down. Does anyone have a clue why? Cheers, Sebastian |
2013-10-22 06:48:58 -0500 | asked a question | How can I run Gazebo and the real PR2 simultaneously? Hello, I try to run a Gazebo simulation of a physical environment and the (real) PR2 at the same time. Running the PR2 first and launching Gazebo then leads to a broken PR2 connection (Dashboard disconnects..). I suppose this is mainly because of Gazebo sets 'use_sim_time' to true on the param server and publishes on the /clock topic. My question is then actually if someone tried something similar already or has any ideas or hints to bring me on the right track. BTW I want to validate robot actions in simulation before executing them. Thanks a lot. |
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2013-08-01 04:46:45 -0500 | commented answer | service exception using tf listener in rospy As this seems to be not fixed on Fuerte as of today I created a patch and want to share it. Therefore the following pull request has been created: https://github.com/ros/geometry/pull/26 |
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2012-07-25 06:05:27 -0500 | answered a question | PR2 Calibration Graphs and Improvement We just upgraded to Fuerte and did a full system calibration on the PR2. The results are notably bad (see plot image [0]), especially the sensor to arm calibration errors. We did it twice with almost the same result. Does anyone have the same issue after upgrading to Fuerte? Any suggestions on what might be the reason or what can improve the result? P.S. I wanted to post this as a comment to your answer, but there was no comment field. [0] http://tams.informatik.uni-hamburg.de/people/rockel/img/calibration_plots_120725_b.png |
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