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| From | Jan Fredrik Hovden <jfh@hivolda.no> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | st: Category sizes in IF statements - how? |
| Date | Mon, 28 Feb 2011 19:41:18 +0100 |
Is there a simple way to use the size of a category as a condition of an IF statement? Take for example the variable AUTHOR, which includes about 1000 different authors. I would like to make a dummy for some of these authors (using either TAB,GEN() or DUMMIESLAB - but not for everyone, only for categories including at least 40 persons. IN OTHER WORDS: What I would like is to do something like this (written in English): . dummieslab AUTHOR if categorysize>20 I would greatly appreciate any idea f. Jan Fredrik Hovden Associate professor, Department of Information and Media Science University of Bergen, Norway * * 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/