User defined functions: user defined macros: Enviromental functions

Over the years I have been building a library of environmental functions (in the form of a text file usable by Simile (http://www.simulistics.com/help/equations/user-defined/macro.htm). This library is useful, in the main, in plant ecophysiology. To use this file save it without the .txt at the end of the name in you user functions directory ("My Documents\My Simile Files\Functions" on Windows).