st: RE: counting number of variables in a varlist

["ali hashemi" <hashemi@vt.edu>]

Many thanks for your help. Actually -x1 x2- was just an example. In the main
problem the number of variables in the varlist is not pre-determined and
depends on the syntax that user uses. So I guess the best way to do it would
be:

global count: word count `varlist'  

thanks again
Ali


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 
n.j.cox@durham.ac.uk 

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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