On Wed, 22 May 2013, artur bala wrote: > Dear all, > I use a sample restriction command into a "foreach" loop based on an > index variable. > The problem arises when for a specific index variable the sample > restriction leaves no observation and then the loop stops running > notifying that no observation would be left. > I would expect/prefer that the loop keep running through the next > value of the index variable instead of shutting down. > Is there any way to have the loop work beyond this "impediment"? You can use the "catch" modifier, as in <hansl> nulldata 30 set seed 1234 small = uniform() smaller = uniform() * 0.5 big = uniform() * 10 series x = NA loop foreach i big small catch smpl smaller>$i --restrict --replace if !$error series x = $i endif end loop smpl full print x -o </hansl> ------------------------------------------------------- Riccardo (Jack) Lucchetti Dipartimento di Scienze Economiche e Sociali (DiSES) Università Politecnica delle Marche (formerly known as Università di Ancona) r.lucchetti(a)univpm.it http://www2.econ.univpm.it/servizi/hpp/lucchetti ------------------------------------------------------- _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users