Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
From | Nick Cox <njcoxstata@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Merge data for two panels in a panel data set |
Date | Mon, 26 Mar 2012 15:43:06 +0100 |
If this is just two firms, why is the answer not item1[41] + item1[42], etc., where naturally you should insert the observation numbers relevant? Nick On Mon, Mar 26, 2012 at 3:35 PM, rado645-bg@yahoo.de <rado645-bg@yahoo.de> wrote: > I have two firms in a data set that merge at a given point of time. For a specific reason, I need to sum the observations over their balance sheet items in each period of time. Would that be possible in Stata? > > > The dataset looks like that: > > Firm Date Item1 Item2 Item3 > > > Firm1 Date1 Item1 Item2 Item3 > > Firm2 Date1 Item1 Item2 Item3 > > Firm3 Date1 Item1 Item2 Item3 > > ...so on. > > I would like to merge in each period of time the data for firm 1 and firm 2 so the dataset will look like that: > > > The dataset looks like that: > > Firm Date Item1 Item2 Item3 > > > Merged_Firms Date1 Item1 Item2 Item3 > > Firm3 Date1 Item1 Item2 Item3 > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/