https://helpdesk.strw.leidenuniv.nl/wiki/ 2026-04-04T03:06:58+00:00 https://helpdesk.strw.leidenuniv.nl/wiki/ https://helpdesk.strw.leidenuniv.nl/wiki/lib/exe/fetch.php?media=wiki:logo.png text/html 2022-11-30T09:11:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://helpdesk.strw.leidenuniv.nl/wiki/doku.php?id=general_software:idl:old&rev=1669799498&do=diff IDL version 8.5 and below IDL is a commercial tool for data visualization with its own programming language. See also: <http://www.exelisvis.com/ProductsServices/IDL.aspx> Our introduction course has a chapter on IDL as well. License issues If you experience IDL to fall back to demo-mode, that usually means that all licenses are in use. There is a limited amount of license available for the use in the institute. You can get an idea of who is using IDL by typing at the UNIX command prompt: