On Fri, Apr 16, 2010 at 10:18 AM, Mohamed Lajnef <Mohamed.lajnef at inserm.fr> wrote: > Hi Sean, > > I would extract MAlist from another MAList eg extract some rows from MA1$M > and make an new MAList (MA2) with keeping rows? > > would you have an idea ? MA2 = MA1[1:100,] That will give you the first 100 rows and a new MAList. Sean