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From | George Vega Yon <g.vegayon@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Loops and counter |
Date | Fri, 22 Mar 2013 15:03:29 -0300 |
gen total = a1 * b1 * 365.24 forval i = 2/14 { replace total = total + a`i' * b`i' * 365.24 } replace total = total/(z * 365.24) Cheers! George Vega Yon 7 647 2552 http://cl.linkedin.com/in/georgevegayon 2013/3/22 Thomas Speidel <thomas@tmbx.com>: > I am trying to shorten the following expression in Stata: > > gen total = ((a1 * b1 * 365.24) + (a2 * b2 * 365.24) + ... + (a14 * b14 * > 365.24)) / (z * 365.24) > > Where a1-a14, b1-b14, z are all continuous variables. > Typing the expression in full is time consuming. I seem to recall I should > be using a loop with a counter to cycle through every value 1-14. However, I > am not sure how to do that. > > Thanks. > > -- > Thomas Speidel > * > * 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/ * * 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/