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Re: st: loop to rename vars


From   "Sergiy Radyakin" <serjradyakin@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: loop to rename vars
Date   Fri, 10 Oct 2008 14:43:09 -0400

On Fri, Oct 10, 2008 at 2:26 PM, Nick Cox <n.j.cox@durham.ac.uk> wrote:
> You don't need to fire up -ds- beforehand. This can thus be reduced to
>
> local i = 1
> foreach var of var * {
>        ren `var' var`i'
>        local ++i
> }
>
> In fact you don't need a loop. With -renvars- from the Stata Journal
> (-search renvars- for location) you can go
>
> renvars \ var1-var`c(k)'

What if var5 already exists (and it is 10th in order). Will -renvars-
be intelligent enough to sense it and adjust numbering accordingly? or
will it just crash with error 110 after renaming the fifth variable?

Thank you, Sergiy Radyakin

>
> c(k) is held by Stata as the number of variables -- see results of
> -creturn li- and it has a local macro persona `c(k)'.
>
> Naturally -renvars- is doing the loop on your behalf. It also checks for
> name problems.
>
> If Mai does not want all variables renamed, then the advice is modified
> accordingly.
>
> Nick
> n.j.cox@durham.ac.uk
>
> Friedrich Huebler
>
> ds
> local i = 1
> foreach var of varlist `r(varlist)' {
>  ren `var' var`i'
>  local ++i
> }
>
>
> On Thu, Oct 9, 2008 at 11:31 PM, mai7777 <mai7777@gmail.com> wrote:
>
>> How can I loop over vars to rename them by their order number.
>> so they become var1, var2, var3...?
>
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