For further information, please refer to the following links:
- The QtCharts overview can be found at https://doc.qt.io/qt-5/qtcharts-index.html
- More documentation on the psutil library can be found at https://psutil.readthedocs.io/en/latest/
- This guide from the University of California at Berkeley offers some guidelines for choosing the right kind of plot for different types of data: http://guides.lib.berkeley.edu/data-visualization/type