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RE: st: encoding unique letter into a unique number for combined combinations


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: encoding unique letter into a unique number for combined combinations
Date   Wed, 14 Feb 2007 15:58:02 -0000

There is a typo here in that the format %02.0f should
be in " ". And I would definitely leave the old variable
in place. Otherwise this solution is neater than mine. 

Nick 
n.j.cox@durham.ac.uk 

Jeph Herrin
 
> If your example is strictly true (you have all
> uppercase letters, you want to map A->1,..., Z->26),
> then:
> 
> forv i=1/26 {
> 	replace myvar = 
> subinstr(myvar,char(`i'+64),string(`i',%02.0f),.)
> }
 
T.J. Volant 
 
> > How
> > can I program so that it will encode each unique
> > letter into a unique number? Example:
> > I got hundreds of combinations of strings like:
> > ABC
> > ABB
> > ACA
> > Then, encode only gives me 1,2,3 in order. But I would
> > like to label letter A=01, B=02, C=01 etc, and then
> > have encode give me 010203, etc. How can I program
> > this? 

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