How to rewrite the frameid in a rosbag?
I recorded a rosbag and tried to visualize it in Rviz. I get the following message `MessageFilter [target=left_hand ]: Discarding message from [unknown_publisher] due to empty frame_id. This message...
View ArticleMy rosbag info shows messages, but my ros msgs are empty.
Below is my code snippet to record rostopics using ROSbag API. My messages are empty when I do a rostopic echo. I am not sure what is happening. My bag is being recorded and my `rosbag info...
View ArticleData saved samples down when recording a rosbag
I am trying to save RGB and Depth images from 5 different sensors and as well record a rosbag from them. When ever I try to record he rosbag, the number of images saved drops from 30Hz to 7 Hz....
View ArticleProblem while Running GMapping
I have modified the GMapping code by Openslam.org, it is being compiled correctly. Now when I run the gmapping package with the bagfile created from Intel dataset in the following sequence, it is...
View ArticleConvert CARMEN log file to rosbag
This is more of a question of 'Which docs should I read'. I have some CARMEN log files which I need to convert to rosbag. I have read about bag and msg formats, however, I do not quite understand how...
View ArticleBug? Rosbag filter and /tf_static
Hi all I am using a .bag file with RTAB-map ROS. It uses some static transforms between different camera frames to do the mapping. When I feed "data.bag" into RTAB-map, it works fine. Now, I create a...
View ArticleHow to extract images from *.bag after image_proc?
I an trying to create pipe in .launch file in the following way: 1. Decompress image 2. Apply image_proc 3. Extract it Contents of the .launch file is the following: https://pastebin.com/8qtJLK2w As a...
View ArticleControl the frequency of saving data of rosbag record?
Is it possible to control the frequency of saving data with rosbag record I want them just collect the data at the frequency of 100Hz, not more or less.
View ArticleHow to change different topics pace in rosbag?
I have 2 topics (A and B) in rosbag. but they are not synchrinized, A is 10s ahead of B. So I want to create a new rosbag and make A 10s delay to synchronize with B. How should I do that ? should I...
View ArticleWhy the maps generated from a rosbag (offline mode) are better than in live...
Hi!!! I've been used Gmapping and HectorSLAM to generated maps in live time and using a rosbag file (offline mode) that storaged the messages of /scan and /tf topics. I can't understand why the maps...
View ArticleCan rosbag 'buffer exceeded' error be overcome by increasing the RAM?
I am trying to record a number of topics which includes depth map from a stereo camera, color images from the camera, IMU data and GPS data. I get the warning '*buffer exceeded*' after storing around 4...
View ArticleError while using kitti2bag
I am trying to convert the kitti dataset to a rosbag file using https://github.com/tomas789/kitti2bag/tree/gh-pages . However, when I use the command kitti2bag , the following error is displayed :...
View ArticleI ran into dependency problem with building catkin_ws for kitti_to_rosbag...
I am provided with a kitti dataset at http://kitti.is.tue.mpg.de/kitti/raw_data/2011_09_26_drive_0001/2011_09_26_drive_0001_extract.zip. I have to convert this dataset into rosbag using the package...
View ArticleBag file empty when recording
I use `rosbag play --clock` together with `use_sim_time=true` to publish recorded sensor information. The information is used in my nodes wich publish new topics other nodes should subscribe. I would...
View ArticleIs there a way to change the /tf in a rosbag?
I currently have a rosbag with a /tf topic containing only static transforms. Is there a way I can alter one of the transforms? I have tried creating a new filtered rosbag not containing the /tf and...
View Articlerosbag record performance issues
Hello ROS community, We are running our ROS system on a 6-core multiprocessor machine (8GB RAM, 32GB eMMC storage, 64bit ubuntu Linux) and **experience significant load increase when turning on ROS...
View ArticleDisplay CompressedDepth Image Python cv2
Folks, What is the correct way to subscribe to a CompressDepth (32FC1, plus, no regular depth image available) image and display (e.g., cv2.imshow) in Python? I can do this easily in roscpp, but I get...
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 ArticleHow can I use bag file data in Matlab?
I have datas in bag file such as velocity and acceleration from the sensors. I want to read data with respect to time domain to make calculations in Matlab. How can I gain the data and use in Matlab?...
View ArticleCan I record the data of the latest several seconds to a .bag?
Hi, I would like to record the data of the latest several seconds, but do not find any way to do that. I think that what I need is a queue. Say, a topic of 1 hz, and I want to record the latest three...
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