Hi artur, thanks for the code, it works really fine. In a first step I updated it in order to print only the ith value, but really great would be to specify a random order like 1 20 and 25. Here is the code #print out the tth value of the ith unit scalar t = 7 # this is the t-th period to display through all units scalar ids = 25 # this is the i-th unit loop for (n=(t+T*(ids-1)); n<=ids*T; n+=T) --quiet loop for (i=ids;i<=ids;i+=1) --quiet nothing_$i = nothing[n] print nothing_$i endloop endloop Cheers Pindar Von: gretl-users-bounces(a)lists.wfu.edu [mailto:gretl-users-bounces@lists.wfu.edu] Im Auftrag von artur bala Gesendet: Mittwoch, 26. Mai 2010 18:12 An: Gretl list Betreff: Re: [Gretl-users] Another loop question and a print question Hi pindar, Hope the following script may (partially) help you. It prints out the t-th period value for each unit. <script> # a panel of 25 units x 7 periods genr series nothing = normal(0,1) scalar scl = 0 scalar n = 3 # this is the t-th period to display through all units loop for (n=3; n<=175; n+=7) --quiet scl = nothing[n] print scl endloop <\script> artur Hi there, I have a panel data set and want to print the realization of a variable for the ith individual at the the tth period without altering the sample via smpl. If this works it should be possible to do such operations not only for one individual and period but in a loop for several individuals and periods. Unfortunately up until now I didn’t find the way to do it. Thanks for your help Pindar <https://compte.laposte.net/inscription/index.do?jeux=201001FOOTER> Pieddemail