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Re: st: Drop observations with multiple zero values


From   Sergiy Radyakin <serjradyakin@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Drop observations with multiple zero values
Date   Fri, 7 Jun 2013 16:10:23 -0400

for negatives you can use
tempvar r
egen `r'=anycount(A B C),values(0)
drop if `r'==3

where 3 is the number of variables in your varlist specified in the
anycount function.
Sergiy

On Fri, Jun 7, 2013 at 4:06 PM, Sergiy Radyakin <serjradyakin@gmail.com> wrote:
> tempvar r
> egen `r'=rowtotal(A B C)
> drop if `r'==0
>
> missings are treated as zeroes and things get more complicated if any
> of the vars may contain negatives.
> Best, Sergiy
>
> On Fri, Jun 7, 2013 at 4:02 PM, G. Anderson <ga274@cam.ac.uk> wrote:
>> Hi,
>>
>> Does anybody know how I can drop observations if a number of values are
>> zero?
>>
>> I can do this by manually inputting
>> drop if( A==0 & B==0 & C==0)
>> But I was wondering if there was any easier way of doing this (especially
>> when I have a lot of variables)- perhaps using varlist somehow?
>>
>>
>> Many Thanks,
>>
>> Gareth *
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