John Hennen
>
> Joel Clovis wrote:
>
> > I want to delete variables if they do not contain enough
> observatoins. I've
> > tried to make use of Nick Coxs' npresent & dropmiss
> (STB-49:dm67 &
> > STB-60: dm89) to no avail, some attempts are in the
> following manner:
> >
> > foreach var of varlist cba2tfina-region {
> > keep `var' if r(npresent)>=30
> > }
>
> >
> > this brings up invalid syntax, and I'm not sure why
> >
>
> REPLY-
> Assuming that the several variables in the varlist
> cba2tfina - region are not
> strings, did you want something like this:
>
> foreach var of varlist cba2tfina-region {
> qui npresent `var'
> replace `var' = . if r(N) <30
> }
This wasn't the original question. Setting variables
to missing is not -drop-ping them.
Nick
[email protected]
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