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Re: st: identifying how many digits string var has


From   Daniel Marcelino <dmsilva.br@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: identifying how many digits string var has
Date   Sun, 3 Apr 2011 14:55:56 -0300

Yeah, thinking better the problem, my test is ilogical.
Thanks
Daniel

On Sun, Apr 3, 2011 at 4:28 AM, Nick Cox <njcoxstata@gmail.com> wrote:
> Joerg Luedicke  gave you a solution with -length()-.
>
> -strlen()- and -length()- are just different names for the same function.
>
> What you did wrong was that
>
> ... if strlen(`x')
>
> is to be thought of as a contraction for
>
> ... if strlen(`x') > 0
>
> which is true for all your tests. So, the last test you made
> overwrites the others.
>
> As Joerg said, just using -length()- or -strlen()- to count the
> characters is what you want.
>
> Nick
>
> On Sun, Apr 3, 2011 at 1:38 AM, Daniel Marcelino <dmsilva.br@gmail.com> wrote:
>
>> Is there a way to identify how many digits a string var have? In the
>> following example I have 18 , 14, and "missing" digits (counting "/".
>> "-" and "."). So, I want to identify in var2 how many digits per line
>> var1 has.
>>
>> gen str20 var1 = ""
>> input
>> "12.205.291/0001-33"
>> "12.176.958/0001-17"
>> "589.275.222-49"
>> "409.011.140-49"
>> "12.147.825/0001-12"
>> "010.433.392-80"
>> "07.752.894/0001-15"
>> "."
>> end
>>
>>
>> I tried this loop, but it just returned me value "3" for all obs. What is wrong?
>>
>> foreach x of varlist var1 {
>> generate byte var2 = 1 if strlen(`x')
>> replace var2 = 2 if strlen(`x')
>> replace var2 = 3 if strlen(`x')
>> }
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