Re: st: getting part of strings

[Nick Cox <njcoxstata@gmail.com>]

This is a tedious but not difficult conversion job so far as I can
see. For example, -asciiplot- on my machine shows char(192) through
char(196) as various accented upper case A. So, I would map those all
to A -- char(65). You don't need to store anything.

qui forval j = 192/196 {
     replace myvar = subinstr(myvar, "`=char(`j')'", "A", .)
}

As Eric pointed out, -charlist- from SSC shows which characters there
are in your variable and -asciiplot- from SSC gives you a visual
table.

Nick


On Sun, Mar 27, 2011 at 4:57 PM, Daniel Marcelino <dmsilva.br@gmail.com> wrote:
> I get it. However this thread lead me to an old issue in my mind, how
> take out language marks (accent) from strings replacing by single
> letter, like "Ô" for "O" or "È" for "E".
> So, maybe I can store a local table with correspondence letters and
> run it in a loop for each line of string var. What you think about it?
>
> /****/
> clear
> inp str200 var1
> "45123 - ANTÔNIO HERVÁZIO BEZERRA CAVALCANTI - PB - Deputado Estadual"
> "1212 - DAMIÃO FELICIANO DA SILVA - PB - Deputado Federal"
> end
>
> // table accent
> local accent = {
>  ['á'] = 'a',
>  ['à'] = 'a',
>  ['ã'] = 'a',
>  ['é'] = 'e',
>  ['è'] = 'e',
>  ['É'] = 'E',
>  ['Ó'] = 'O',
>  ['í'] = 'i',
>  ['Í'] = 'I',
>  ['ü'] = 'u',
>  ['Ü'] = 'U',
> }
>
>
>
> On Sun, Mar 27, 2011 at 1:17 AM, Eric Booth <ebooth@ppri.tamu.edu> wrote:
>> <>
>>
>> On Mar 26, 2011, at 10:10 PM, Rebecca Pope wrote:
>>
>>> Daniel,
>>> You could try using char(). The ASCII equivalent to "A" is 69; for "Z"
>>> it is 90. Maybe something like this would work for you (piggy-backing
>>> on Nick's earlier suggestion):
>>>
>>> clonevar copy = var1
>>> replace copy = upper(copy)
>>> qui forval i = 69/90 {
>>>     local letter = char(`i')
>>>     replace copy = subinstr(copy, "`letter'", "", .)
>>> }
>>
>> Another option is to use c(alpha) and c(ALPHA) for standard alpha characters
>> ********modifying NJC's example:
>> clonevar copy = var1
>> qui foreach i in `c(alpha)' `c(ALPHA)'  {
>>           replace copy = subinstr(copy, "`i'", "", .)
>> }
>> *******
>>
>>>
>>> This won't work for all of your text (e.g. Ã). I don't know of any way
>>> to look the numeric values up in Stata, so I'll plug a previous post
>>> by Nick
>>> (http://www.stata.com/statalist/archive/2006-12/msg00446.html) and
>>> advise you to look up the ASCII codes for any accented letters by
>>> searching the internet for "ANSI character code chart". You'll need to
>>> modify the code above to add any additional numbers you need & switch
>>> to -foreach- with -numlist-.
>>
>> Take a look at -ascii- and -asciiplot- from SSC.
>> Also, you can get a list of all the chars used in var1 with -charlist- from SSC.
>>

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