DanIDL is a highly-optimised library of functions and routines written in the Interactive Data Language (IDL). Developed mainly for use in astronomy, the library also supplies general scientific programs. Careful parameter checking is performed making routines robust and reliable, and the library is set to expand and develop over the next few years.

I provide a subset of the DanIDL routines in the public domain via the DanIDL-Lite library available on GitHub. New routines that I develop first join the DanIDL library, and sometime later they also join the DanIDL-Lite library.