Install libqcustomplot-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libqcustomplot-doc
Description:
Qt C++ widget for plotting. Documentation and examples
QCustomPlot plotting library focuses on making good looking, publication quality 2D plots, graphs and charts, as well as offering high performance for realtime visualization applications. The package contains examples and documentation.
Homepage: http://www.qcustomplot.com
Version: 1.3.2+dfsg1-1
Section: universe/doc