Overview

This package contains a GUI to help users extract data from bag files.

Main features are:

• Export topics to CSV files, by default each topic goes into one CSV file but it is also possible to export one merged CSV file
• Export H264 encoded videos from sensor_msgs/Image and sensor_msgs/CompressedImage topics (8 bits images with 1 or 3 channels only).
• Progress bar to display the progress of the export
• Ability to export only a portion of a bag file (eg: from second 25 to second 60)
• Ability to change the video frame rate when exporting the video
• Ability to cancel exporting video/CSV

The software is user oriented so it is very easy to use and features a desktop launcher when installed.

Dependencies

rosdep

Install, initialize and update rosdep.

Compiling

Create a catkin workspace and clone the project:

mkdir -p catkin_workspace/src
cd catkin_workspace/src
git clone https://gitlab.com/InstitutMaupertuis/rqt_bag_exporter.git
cd ..

Resolve ROS dependencies

rosdep install --from-paths src --ignore-src --rosdistro $ROS_DISTRO -y

Compile

catkin_make

Using the Qt GUI user application

Source the catkin workspace in which you compiled the package, then launch:

roslaunch rqt_bag_exporter gui.launch

There is desktop a file installed when installing the project: you can open the software like any other application using the application menu.

:information_source: If you delete the installed files from your workspace the desktop launcher will not be deleted. It is located in $HOME/.local/share/applications; you need to remove this file manually.

Multi bag exporter

roslaunch rqt_bag_exporter multi_bag_exporter.launch dir:="/home/victor/bags" topic_name_include:="/topic_test" merged_csv:=false

A full documentation of arguments can be found in the launch file launch/multi_bag_exporter.launch