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| From | Nick Cox <njcoxstata@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: generating cumulative sequence |
| Date | Wed, 21 Mar 2012 08:55:12 +0000 |
gen var2 = sum(var1) General tip: Browse in the help for functions to see what you are missing. If it's fundamental, it should be a function. If it's important, but not fundamental, it may be an -egen- function. StataCorp have absolute rights over defining what is fundamental. For an eclectic, idiosyncratic, quirky and capricious highlighting of some valuable functions, see Cox, N.J. 2011. Speaking Stata: Fun and fluency with functions. Stata Journal 11(3): 460-471. Abstract. Functions are the unsung heroes of Stata. This column is a tour of functions that might easily be missed or underestimated, with a potpourri of tips, tricks, and examples for a wide range of basic problems. Nick On Wed, Mar 21, 2012 at 8:46 AM, Ivica Rubil <irubil@eizg.hr> wrote: > How can I generate Var2 (see below), i.e. the cumulative sequence based > on Var1? It seems an egen function can do the job, but which one? Or > there's another solution? Thanks in advance. > > Var1 Var2 > ----------------------- > 1 1 > 5 1+5 = 6 > 6 1+5+6 = 12 > 8 1+5+6+8 = 20 > 12 1+5+6+8+12 = 32 * * 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/