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st: RE: counting number of variables in a varlist
From
Nick Cox <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
st: RE: counting number of variables in a varlist
Date
Wed, 15 Jun 2011 23:08:24 +0100
After
. describe <varlist>
r(k) contains the number of variables in <varlist>.
After
unab vars : <varlist>
di `: word count `vars''
you get to see how many variables there are.
If you go
. di c(k)
you get to see how many variables there are in memory.
With -x1 x2- I can count them by hand and get 2 consistently, but this may not be a skill taught nowadays.
Nick
[email protected]
ali hashemi
I would like to count the number of variables in a varlist. The way I manage
to do this is as follows:
local i=0
foreach var in x1 x2 {
local i=`i'+1
}
I was wondering if there is any built-in command which does the same thing.
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