Here's a good public domain implementation of some fast median algorithms, in C. http://ndevilla.free.fr/median/median/index.html http://ndevilla.free.fr/media

Here's a good public domain implementation of some fast median algorithms, in C. http://ndevilla.free.fr/median/median/index.html http://ndevilla.free.fr/median/median/index.html I've used these codes on some very large datasets, and they work very well.