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Re: st: 2 questions on function wordcount


From   Austin Nichols <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: 2 questions on function wordcount
Date   Thu, 3 May 2012 12:39:22 -0400

Gregorio <GImpavido@imf.org>:
wordcount() will truncate the string at 255 characters. Instead use
-local- tricks described at
help extended_fcn

On Thu, May 3, 2012 at 12:34 PM, Impavido, Gregorio <GImpavido@imf.org> wrote:
> Dear all,
>
> The following two examples should give the same result but they don't.
>
> /*-------begin 1 ---------*/
> unab vlist : *
> di wordcount(`"`vlist'"')
> /*-------end 1 ---------*/
>
> /*-------begin 2 ---------*/
> unab vlist : *
> local i 0
> foreach var of local vlist {
>        local i = `i' + 1
> }
> di `i'
> /*-------end 2 ---------*/
>
> In my case, wordcount gives me a different result depending on how I rename the variables in the dataset while the second gives me always 170 (which happens to be the number of variables in the dataset.
>
> Question 1. Is this related to the length limitation of the local macro? But if Yes, why is the macro vlist not truncated?
>
> Question 2. Is there a quicker way to do display the last word in vlist (i.e., -di word((`"`vlist'"',wordcount(`"`vlist'"'))-) than using example 2 above to extract the number of the last variable?
>

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