Interactive Data Language
and a plot is born...
IDL is always running in a kind of Debugger mode. Variables are accessible in R and W.
IDL> Image = (Obs - Flat) / (Dark - Flat)
There is a way, under IDL6.0, to generate programs that can be run without IDL license (IDL Virtual Machine).
IDL courses C. Morisset © 2004 IA/UNAM V 2.2