Questions tagged [rxbag]

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How to associate Rosbag time with data

Hello everyone! I have saved some flight data using rosbag record, but the header of my topic /odom doesn't contain the time. When I extract the data using rostopic echo -b foo.bag -p /odom > odom....
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active bag file

when i record a bag file , i need to end the record by myself with ctrl C. this create a bag file with .active. i can't succeed to open it with rxbag.i tried rosbag reindex and that make a copy of ...
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Modificate rxbag tool

Hi I need to make a modification rxbag tool I will appreciate if someone could tell me how can I start because I don’t know what packages I have to modify, my intention is to change the time line it a ...
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How to launch rxbag or rqt_bag with the --clock option

Hello I am launching the playback of a bag file using rosbag play. Because I want to emulate the clock at the time of recording I use the --clock option along with the use_sim_time=true parameter http:...
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looking for stereo vision howto with 2 USB webcams

Hi! I want to experiment with stereo vision in ROS Groovy using two USB webcams. I found the stereo_image_proc package with the ChoosingGoodStereoParameters tutorial. Unfortunately, it seems to be ...
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can not load rxbag_plugins correctly

Hey! I am trying to plot my trajectory topic in a decent way. rxbag_plugins plot seems like a very promising tool to plot the trajectory topic. But while run rxbag, I got the following error. Can ...
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Extreme CPU usage when ploting using rxplot and rxbag tools

Hello all. For some reason when I plot data using rxgraph or rxbag tools, the CPU usage explodes. For example : I trying to plot some fields of a topic that consist of 20 numerical fields and ...
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Is there a way to save all rosbag data into a .csv or text file?

Hi all! I would like to extract the data from the rosbag and convert it into text or .csv file to use the data into Matlab and Excel. Is this possible ? Originally posted by ETS-Dronolab on ROS ...
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rxbag timeline and plots incorrect

I tried rxbag with the bag at: pr.willowgarage.com/data/gmapping/basic_localization_stage.bag. The result is in screenshot: alunos.deec.uc.pt/~a2004110783/rxbag.png The base_scan topic only shows ...
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Can I plot Euler angles in rxbag?

I would like to use rxbag to plot the yaw angle I obtain from a localization algorithm, however the orientation in geometry_msgs::PoseStamped (and most other messages) is given in quaternions. Is it ...
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rxbag export crashes

Hi, I'm trying to export data from a bagfile using rxbag. After plotting without problems the data I'm interested on I do right click-> export to csv and after naming the file everything crashes ...
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rxbag extraction of frames

Hello everyone ! I was wondering is there is any steps to follow in order to save all the frames that I put into a rosbag on my computer with rxbag. I noticed that there is a button "save frames&...
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ROS Answers SE migration: Edit a rosbag

I am interested in interactively editing a bag. Specifically, I have some bags which consist mainly of image data, and I want to delete some frames for various uninteresting reasons. I don't fathom it ...
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launch file for rxbag

Hello, I want to launch rxbag from a launch file and load the appropiate data directly. is that possible? I've been looking but I found no examples or anything about launching rxbag from a launchfile. ...
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rxbag human readable timestamp: local or UTC time?

It seems that the human readable timestamp shown in rxbag status bar, at the right of the raw sec.nsec representation, is in local time. Indeed, in ...
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rxbag segfault on view Image RAW data

Although it might not be very useful, when I select Raw view for an Image type topic in rxbag, I get a segfault. Could somebody confirm this behaviour? I'm using ...
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gmapping simulation

Hello, I'm trying to simulate a map useing turtlebot data. I've been able to build the map if the messages that I publis are tf and scan, but I don't want to record tf because gmaping publishes there. ...
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Rxbag is not publishing

Hi! I've recorded a bag file useing rxbag --record -a -o all.bag. When I want to play it I run rxbag all_2011_12_09_10_10_20.bag and the rxbag window opens and I can play, see the graphics, everithing....
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trying to play back images from multiple cameras in rxbag causes both videos to flip between cameras

I have two urdf files: one of a robot w/ a front camera and the other of a camera that I have floating in the air as a top view perspective. The cameras in the xacro files are as follows: (camera.urdf....
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rxbag plot does not show any message fields

I'm trying to use the "plot" plugin for rxbag in order to plot (x,y,z) depth data from a kinect. I'm able to open the plot gui, but when I click on the cog icon to select fields to plot, ...
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problem with .bag file

Hi, I've recorded, using rosbag, a .bag file with images from a gscam node and message from the gmapping-slam node and I'd like to create a file that associate each image to the corresponding ...
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Is there a way to merge bag files?

I have data across multiple bag files, but I don't care about absolute timestamps, just relative time. I would like to merge the separate bag files into one bag file. For example, if I was recording ...
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bag a kinect for more than 30 seconds

When I use openni_camera to broadcast and then bag the kinect, at ~ 30 seconds the recording chokes for seconds, and large gaps are present in rxbag inspection. I am running Ubuntu 10.04 with 16G of ...
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Is it possible to plot different topics on the same plot in rxbag?

I have several distinct topics saved in a bag and I would like to plot them on the same plot for comparison purposes in rxbag. This works great for values in the same topic, but I don't know if I can ...
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5 answers
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Using python for automatically writing data in bag to csv file

Hi all, I want to write python code to automatically analyse a bag file and write the contents to a csv file (to allow for easy plotting afterwards). So far I can analyse the topics in the bag file, .....
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rxbag_plugins commandline API

Is it possible to call the rxbag_plugins from commandline? More specific the plot functionality, I'm thinking of the rxplot api but more specific the CSV export function. Are there any plans on this ...
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