[Gretl-users] add time-observations for panel data

Hi all, I would like to add additional time-dimensions (n observations) for each unit in a panel. I've tried to make use of the <dataset addobs> command but it does, instead, add a whole new unit: <hansl> clear set verbose off nulldata 6 -p genr index series unit = cum(((index-1) % 3) == 0) series time = vec(cum(mshape(ones(6,1),3,2))) setobs unit time --panel-vars dataset addobs 3        # stacks time-series of length 3 for a 'new' unit print dataset -o </hansl> Is there a 'clever' way to expand the time-dimension while leaving the unit-dimension untouched? Thanks, Artur