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From | Nahla Betelmal <nahlaib@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: graph with indicator variables |
Date | Thu, 28 Feb 2013 16:50:09 +0000 |
Dear Statalist, I want to graph the trend of a numerical variable S around a certain event for different firms. For each firm the event occurs in a different year, so I generated an indicator variable equal 1 for the event year in each firm and called it T0 which could be year 2003 for firm 1 but year 2008 for firm 2 , etc. I also generated an indicator variable for year T-1 which represents the year preceding the event year for each firm (e.g. would be year 2002 for firm 1, but 2007 for firm 2 ) , and variable year T+1 which represents the years following the event year for each firm ( would be year 2004, but 2009 for firm 2, etc.). I used lag and forward functions for T-1 and T+1. How can graph the trend of variable S around along variables : T0, T-1, T+1. Is it possible to have the S variable is on the Y-axis while X-axis represents T0, T-1, and T+1 in one graph, and how? Many thanks Nahla Betelmal * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/