Install dpuser by entering the following commands in the terminal:
sudo apt update sudo apt install dpuser
Interactive language for handling numbers, strings, and matrices
DPUSER is an interactive language capable of handling numbers (both real and complex), strings, and matrices. Its main aim is to do astronomical image analysis, for which it provides a comprehensive set of functions, but it can also be used for many other applications. . Note that this package was compiled with the giza library instead of PGPLOT, since the latter is non-free software.