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...
View Articlerosbag 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...
View Articlestart 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...
View ArticleHow 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,...
View Articlerosbag 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,...
View Articlerosbag 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]...
View Articlerosbag 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...
View ArticleROS 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...
View ArticleHow 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...
View ArticleAlternatives 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...
View Articlereading 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...
View ArticleHow 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?
View ArticleExport 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...
View ArticleRos 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...
View ArticleProblem 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....
View ArticleHow 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...
View ArticlePossible 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...
View ArticleHigh 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...
View ArticleHow 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...
View Articlerosbag 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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