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From | Navid Asgari <navidstatalist@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: Generating new lines/record for groups of data |
Date | Tue, 22 May 2012 23:51:14 +0800 |
Hi all, I would like to add new records to my data by groups. My longitudinal data-set looks like this (the maximum length of a panel is 4 years[from 1990 to 1993, but some Firms have less observations, so I have an unbalanced panel data]) Firm_ID Year var1 Var2 ------------------------------------------- G33 1990 2 2.5 G33 1991 3.4 1.2 G33 1992 5.6 2.8 G33 1993 8.1 9.2 KL1 1992 3 2.22 As you can see "G33" has three records from 1990 to 1993... Now I want to make it look like a balanced panel data: Firm_ID Year var1 Var2 ------------------------------------------- G33 1990 2 2.5 G33 1991 3.4 1.2 G33 1992 5.6 2.8 G33 1993 8.1 9.2 KL1 1992 3 2.22 KL1 1990 . . KL1 1991 . . KL1 1993 . . Thanks in advance! Navid * * 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/