Re: st: Number of a subset of variables in local

[Antoine Terracol <Antoine.Terracol@univ-paris1.fr>]

unab mylist : name*
display "`mylist'"

Antoine

On 19/08/2010 15:04, Trelle Sven wrote:
> Dear all,
> I have a dataset with several variables all starting with the same name
> plus sequential numbers at the end (e.g. name1, name2, name3, ...). In
> addition, there are several other variables. I want to put the number of
> variables starting with "name" in a local. Originally I thought I can
> use
>
> describe name*
>
> But apparently, the describe command puts the number of variables of the
> whole dataset in r(k) and not just the number of variables specificied
> after the command.
>
>
> This is my workaround:
>
> * example starts
>   use datatset.dta, clear
>   keep name*
>   qui describe
>   local n = r(k)
>   use datatset.dta, clear
> * Example ends
>
> Does anybody know whether there is a more elegant way i.e. can I avoid
> loading the dataset twice?
>
>
> Thanks for your help
> Sven
>
>
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