Andy, thanks. -michael -----Original Message----- From: Liaw, Andy [mailto:andy_liaw@merck.com] Sent: Thursday, October 23, 2003 11:05 AM To: 'Man, Michael' Subject: RE: [BioC] Type III Sum of Squares Calculation Hi Michael, > Yes, you can use either Perl or R to do automate the task. > The key is to get your data in the right format. Use apply() > when you need do large number of loops because it will save > the computing time. Just want to mention that apply() uses a for() loop, so cannot be faster than a for loop. lapply() does use C level for loop, so is fast. sapply() and tapply() both call lapply(), so are fast as well. Best, Andy LEGAL NOTICE\ Unless expressly stated otherwise, this messag...{{dropped}}