MATLAB code

Introduction

Training Technology Lab uses MATLAB for most data processing and visualization purposes. Several scripts have been written to work with our various technology.
Here is a list of the projects:

• Rosbag extraction
• EMG analyzer
• Bluetooth force sensor
• RTL MATLAB control
• BFR audio

Rosbag extraction

rosbag_video.m example - using two webcam feeds.

Official methods:
Viewing: For viewing video stored in a .bag file, rqt_bag is the standard tool.

Extraction: To extract video (which are just compressed/uncompressed images) several methods exist. We have often used bag2video.

MATLAB scripts:

rosbag_loader.m Converts .bag files into .mat files. Must be done before using the other 2 scripts

rosbag_plotter.m Automatically plots known data formats)

rosbag_video.m Automatically converts rosbags into .avi files with data plot overlays.
It can use single or dual videos and plot up to 4 data sets.

EMG analyzer

Purpose: For analyzing EMG data recorded with Myon electrodes and ADInstruments AD converter via ROS-setup in Training Technology Lab

BFR audio

A simple test script for listening to sound from arteries during blood flow restriction exercise.

FAQ/Debugging

This sections relates to all common problems with the software.