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st: How to count countries by year
From
emanuele mazzini <[email protected]>
To
[email protected]
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.
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