This post covers some of the best free software that allow you to draw on the screen on your PC. An overlay is created to help you draw over any running software, open windows, applications, etc., on ...

How to use ncurses to manipulate your terminal screen. In my article series about programming for the text console using the ncurses library, I showed you how to draw text on the screen and use basic ...

The three most common open source technologies for writing data science programs are Python, SciLab, and R. Here's how to write program-defined functions in R. There's no clear definition of the term ...