On Thu, 11 Mar 2010 03:22:27 -0800 (PST) ManInMoon <xmoon2000 @googlemail.com> wrote: > but I don't know what "tm[,-1]" means (well - the -1 bit anyway. > > Does it somehow means the whole matrix? No, it means everything except the first column. > Please don't tell me to check the manual - I tried and failed dismally... Sorry. Please type: ?"[" -- Karl Ove Hufthammer