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From | Maarten Buis <maartenlbuis@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Loop to replace values of a variable |
Date | Wed, 18 Dec 2013 14:40:42 +0100 |
no need to loop: gen x = _n*.1 Hope this helps, Maarten On Wed, Dec 18, 2013 at 2:33 PM, emanuele mazzini <madsoenistata@gmail.com> wrote: > Dear all statalist users, > > I would like to program a (relatively) simple loop to replace the > values of a variable I created, but I cannot figure it out how to > write the syntax. > > The structure of my data is very simple: > I have 300 observations and a variable, say x, that in the first cell > (i.e. for n=1) is equal to 0.1, while it is missing for all other 299 > cells. Data look like: > > n x > 1 0.1 > 2 . > 3 . > 4 . > . > . > . > . > . > 299 . > 300 . > > I would like the loop to replace the missing values of my variable by > going from cell 2 to cell 300, and to have a replace that would be at > a 0.1 intervals, so as to obtain data that look like: > > n x > 1 0.1 > 2 0.2 > 3 0.3 > 4 0.4 > . > . > . > . > . > 299 29.9 > 300 30 > > I can obviously do it by hand, but a loop would be naturally much more > efficient! > Does anyone know how to make it? > > Thank you in advance. > * > * 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/ -- --------------------------------- Maarten L. Buis WZB Reichpietschufer 50 10785 Berlin Germany http://www.maartenbuis.nl --------------------------------- * * 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/