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lz4.h compilation problems

Hello all, It looks as if there are some problems with two different lz4.h files. I'm using gsl 2.4 and pcl 1.8. I'm also running ros on gentoo: In file included from...

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rosbag pause Marker disappears

Hello, We have a node that publishes a set of markers. Those markers are part of sensor detections. So they can appear or disappear while the node is running, which is normal. Now after doing a...

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start and kill rosbag record from bash shell script

Let's say we want to record a rosbag, and run a python script from a bash script. rosbag record -o /file/name /topic PID=$! sleep 2 python ./run_ROS_script.py kill -INT $PID so if you leave out -INT it...

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How to display bag file in rviz

Hi all, I am new on ROS and Linux. I am trying to display point cloud using rviz with VLP-16. Before starting to see real time data, I wanted to see how pcap file can be converted into human-readable,...

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rosbag doesn't playback at same speed

Hi, I have recorded a rosbag w topics at ~7 Hz. When I use `rosbag play` on those topics, they playback at 2Hz. The `rosbag info` too shows a total time of say 10 secs for instance but on playing it,...

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rosbag record error

I am getting the following error when trying to record a bag file about image transport. I thought if the system could send a msg using ros then it should be able to record it and play ? [ INFO]...

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rosbag record never finalized

Hi all, i am new with ROS and I had the exiting challenge to build a lidar point cloud with a velodyne vlp-16. I record my pacp file with tshark and now im in the ROS part. With a lot of help in this...

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ROS Bag File Point Cloud

Is their a way to open a .bag file in a application such as cloud compare, or mesh lab? I am using a Kinect camera for mapping and I want to be able to view the 3d point cloud map created. Thank you...

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How does the rosbag pause work?

I am using ROS Kinetic Kame and written a small patch of code, in which I have subscribed to certain topics and have corresponding message handler (callbak method). I am using some Bag files with the...

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Alternatives to Bag Database

Hello! Are there any alternatives or similiar services as the [ROS Bag Database](https://github.com/swri-robotics/bag-database)? Thanks! **Edit based on community answers:** - [Bag...

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reading VelodyneScan from bagfile - offline

I am trying to read a bagfile containing multiple velodyne data. I want to do this preferably without rosbag play as sometimes from my prev experience due to computation issues it may skip reading a...

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How to get the data from a rosbag(especially when there is images in the bag)

I am working on VI-slam these days, I have to extract data (ground truth) from the bag. There are other data like images in the bag. How can I do that?

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Export topic from bag at different rate

Hi to all, i have recorded several bag files which contain different topics recorded at different rates. For example: topics: /sensor/FilterStatus 11514 msgs : diagnostic_msgs/DiagnosticStatus...

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Ros eats up RAM while recording rosbag remotely

I am running my ros application on a robot (arm) with limited RAM (1 GB). I configured my robot as the rosmaster. The rosbag recording was happening on my local linux machine whoser Ros master was the...

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Problem getting map using hector_slam!!!!!!!!!!!!!!!!!!!!!!!!

'Hello all, I am using Xbox360, Ros Kinetic, Ubuntu 16.04LTS I am new to ROS. I want to map an unknown enviroment using kinect. For this I am using freenect and gmapping. I have done these steps: 1....

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How to see rosparam on terminal screen?

I have recorded all data in rosbag. When I play it using command `rosbag play `, I want to see ros_parameters of amcl. When I type `rosparam list`, it does not list any amcl related parameters. In fact...

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Possible to live the data from rosbag

I want to live the data from rosbag and display on graph with respect to time. I googled it ,but not get any solution. I know reading data and writting data into rosbag . I want to display graph when...

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High rates of corrupt bags with rosbag python api?

I have a python action server where the callback creates a `rosbag.Bag` and then callback subscribing to various messages then write to that bag, and when the action is over the bag is closed and the...

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How do you split a rosbag into several files without calling rosbag filter...

I want to split a 100-GB rosbag into 100 1-GB bags. I tried using rosbag filter but it takes a long time as I have to run each filter manually and each time, it performs a scan of the full bag. Is...

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rosbag record high data rates

I have a i7 system with a RAID 0 of 8 SSDs with a write performance of about 1.4 GB/s (measured). Now I am trying to record a topic with raw data with about 400 MB/s (45Hz, message size of 9.3MB)....

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