Compare topics between rosbags
Compare the topic content between rosbags
Say you have a bunch of rosbags inside a folder and you don't know whether or not all those rosbags have the same topics.
rosbag-compare will :
- retrieve the topics contained in each rosbag
- export a summary of the ros topics in a JSON file
- plot the topics that are missing for each rosbag :
rosbag-compare can be installed from PyPi :
$ pip install rosbag-compare
rosbag-compare can be used both as a command line application and in Python code.
A basic use of
rosbag-compare is to simply call it with the path of the folder that contains rosbags. This will simply generate a JSON file with a summary of the comparison in
$ rosbag-compare -b /path/to/folder/with/rosbags
You can also generate a figure that will show what topics are missing in each rosbag with the
--plot/-p flag. This figure helps when you want to find out if all rosbags of your experiment contains the topics that are of your interest.
$ rosbag-compare -b /path/to/folder/with/rosbags -p
You can also call
rosbag-compare directly into your Python code :
from rosbag_compare import RosbagComparator
data_path = "/path/to/folder/with/rosbags"
rbag_comp = RosbagComparator(data_path)
# This step may take time as it open each rosbag separately
# Will show a progress bar
# Export summary to a JSON file
rbag_comp.to_json() # Defaults to topics_<foldername>.json
# Generate a figure with the name of the
# missing topics for each rosbag
rbag_comp.plot() # Show figure
rbag_comp.plot(save_fig=True) # Save figure (defaults to missing_topics.png)
rbag_comp.plot(save_fig=True, img_path="topics_summary.jpg") # Save figure to path
Pull requests are welcome and don't hesitate to open issues
Development requirements can be installed using pip :
$ python -m venv venv
$ source venv/bin/activate
$ pip install -r requirements/requirements-dev.txt
This project is licensed under a MIT license
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