Aimin Yan wrote: > I am new to R, How to delete a matrix column. e.g. y <- x[,-5] deletes column 5 I was going to point out to the inquirer where this feature is documented --- but I can't bleedin' find it!!! Can anyone tell me? I tried ?"[" but got no joy that I could discern. cheers, Rolf Turner rolf at math.unb.ca