Stata: Data Analysis and Statistical Software

Phil

On 29/07/2011, at 11:42 AM, Daniel Marcelino wrote:

> Dear all,
> I have a doubt on the looping process that might be simple to solve. I
> have a sort of variables with the same scales 1 to 9 that I want to
> recode their values to a different scale. However, when I do a loop
> for replace these values I got some confusing values in particular for
> the value  1. To deal with this problem I using a not pretty
> solution: I'm running  2 loops over the variables as follow.
> 
> foreach v of varlist q* pq* {
> replace `v' = 0 if `v' ==1
> replace `v' = 0.25 if `v' ==2
> replace `v' = 0.50 if `v' ==9
> replace `v' = 0.75 if `v' ==3
> replace `v' = 0.9 if `v' == 4
>  }
> 
> /* I'm loop again because I cannot transform 4==1 in the same previous
> loop. Therefore, I replaced 4==0.9 and now 0.9 == 1
> 
> 
> foreach v of varlist q35a* pq26a* {
> replace `v' = 1 if `v' ==0.9
>   }
> 
> My doubt is: there is a way to replace all values without the risk of
> the new value be considered again in the loop?
> 
> 
> Daniel
> 
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*
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