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Monitor CPU - RAM etc over ROS

Hi, I am using an [ODROID-XU4](http://www.hardkernel.com/main/products/prdt_info.php?g_code=G143452239825) on a quadrotor. On the ODROID is running ROS. To the Odroid is also connected to a camera...

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Error: "Unable to convert 32FC1 image to bgr8" while extracting rbg(d?) data...

I'm trying to extract messages of the "/camera/depth_registered/image_rect" topic from my bag: [ankur@eng050194 20130405]$ rosbag info 20130405_navtest_0.bag path: 20130405_navtest_0.bag version: 2.0...

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error: ‘bag’ does not name a type

I have added rosbag dependencies in cmakefile.txt and package.xml and included essential ros headers but still catkin_make shows errors ( this not name a type that not name a type). Please help i...

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record kinect bag file, reconstruct disparity topic

Hi, I have followed following tutorial [0] to record Kinect data efficiently. It reconstructs the /camera/depth_registered/points topic properly but I also need the topic...

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How to use rosbag to take a snapshot of topics ?

Hello everyone, I am trying to record a snapshot of topics when I used a button of my joypad. A naive approach consist to specify a topic trigger for rosbag record. I found something look good in the...

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image_transport rosbag issue

Has anyone else seen problems recording rosbags for all topics of a node using image_transport? > ERROR >...

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How to record bagfile within launch file

I would like to record some topics via launch file. This code runs without any errors, however, there is no recorded bagfile in current directory. Does anyone know the reason?

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I cannot play a rosbag file for gmapping.

Hello. I'm installed ros-indigo in Ubuntu 14.04 (VMware). I tried "How to Build a Map Using Logged Data". http://wiki.ros.org/slam_gmapping/Tutorials/MappingFromLoggedData But, I did not play a rosbag...

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why the time stamp of the message is later than the rosbag time?

I'm debugging my code with rosbag replay. In my code, I did tf transform like this: tf.transformPose(target_frame, input_pose, output_pose); Sometimes, there's an exception thrown, which read: "Lookup...

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Cannot parse rosbag in MATLab?

I just cannot parse this bag file. So far the matlab code just looks like filepath =fullfile(~/xxx.bag) bagselect =rosbag(filepath) the error on the second line is: "Expected a connection record...

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Error to open .ply file

Hi, I want to convert my rosbag file into ply file. I have velodyne data in rosbag file format that i can convert into pcd file with help of rosrun pcl_ros bag_to_pcd That gives me multiple pcd file...

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problem with playing and displaying a bag file in rviz

I have a bag file containing the path my robot traversed using a laser sensor. This is the information of the bag file:> labcoro@Samsung:~/catkin_ws_youbot$ rosbag info planner_path1.bag path:...

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Video file convert to .bag file

Hello! I want to convert my video file(.avi) to .bag file. Could you please help me? Thank you!

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Rosbag step size

I have not been able to find out, but is it possible to increase the size of the step command `s` when rosbag is paused?

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collecting and organizing rosbag files

Recording rosbag files is great. After multiple recording sessions, I'm left with all these bag files that are really only telling me date/time by direct observation. I can do rosbag info to get more...

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memory mapping in ros bag

Instead of reading all the data from the ros bag file, is their any ros provided method to read the bag file using memory mapped methode? For example right now i am using below program to read the ros...

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Why is Python rosbag crashing?

I'm trying to read a ROS bag file to convert it's values. I'm using the rosbag Python API. I don't understand why the reading crashes at the end: -0.262920607691 0.447809595374 -0.39638550589...

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pointcloud data full copy

Hello! I am using rplidar with SLAM. I recorded data using rosbag. Using this, I can check the recorded data. & rosrun rplidar_ros rplidarNodeClient & rosbag play XX-XX-XX-XX-XX-XX.bag When new...

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Store ROS messages in file ?

Hello I am working on Some project, I have to store ROS messages in some File using C++ API's. I knew ROS BAG files which is excellent for storing ROS messages But i want to knew Is their any other...

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"rosbag play" pauses while it shouldn't

Are these expected behavior of rosbag? **Behavior-1** $ wget http://download.ros.org/data/rosbag/clock_alive.bag $ rosbag info clock_alive.bag path: clock_alive.bag version: 2.0 duration: 40.0s start:...

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