Jeff: It does what I want. Thanks. Bruce Bruce Ratner, Ph.D. The Significant Statistician™ (516) 791-3544 Statistical Predictive Analtyics -- www.DMSTAT1.com Machine-Learning Data Mining and Modeling -- www.GenIQ.net Jeff Newmiller wrote: > Response5x <- Response[ rep ( seq_along( Response[[1]] ), 5 ), ]