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st: identifying how many digits string var has


From   Daniel Marcelino <dmsilva.br@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: identifying how many digits string var has
Date   Sat, 2 Apr 2011 21:38:48 -0300

Dear all,
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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