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| From | emanuele mazzini <madsoenistata@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | st: How to count countries by year |
| Date | Fri, 4 Mar 2011 10:28:47 +0000 |
Hi there. I occurred in a little problem in counting the observations of my dataset. I have panel data and need to count how many countries are there for each year. I tried with the following command (assuming that cty1 is the name of each country): bys year: count if cty1[_n]!= cty1[_n-1] but Stata gives a result which is not what I was expecting. Can anybody help? Thank you everyone in advance, Emanuele Mazzini. * * 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/