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Re: st: RE: looping up to a local macro


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: looping up to a local macro
Date   Thu, 23 Jun 2011 00:13:47 +0100

I don't think it's clear that any explicit looping or macro
manipulation is needed at all. Michael wants to change a bunch of
variables -letter01- on to -letter1- on , for which a solution is

renpfix letter0 letter

-renpfix- has long been an official command.

The -recode- part will take a varlist, so looping is also unnecessary for that.

However, I can't vouch for what is needed to speed up the unspecified
lines of code.

Nick

On Wed, Jun 22, 2011 at 11:20 PM, Sarah Edgington <sedging@ucla.edu> wrote:
> Michael,
> What do you mean by "I can't quite get it to work"?  What problem are you
> having?
> Without more information about what's going wrong it is really difficult to
> offer much assistance.  The form of your loop looks fine.  Maybe there's
> some problem with the code in the loop itself.  Does it work if you specify
> a number instead of the local macro?  You're setting the value of letters in
> the same dofile as the forvalues loop, right?  If you aren't that's going to
> be a problem.

 Michael Costello

> I'm writing to ask about combining loops with local values.  I have a local
> macro that I need to set equal to some value, different for each database.
>  Let's say, for example, 50 in one db, 100 in another.  Then I want to
> preform some loop operation on all the variables from
> letter1 up to letter50 or letter100 (depending on the database).  Is that
> possible, with some change to the code below?  I can't quite get it to work.
>
> local letters 100
>
> forvalues i = 1(1)`letters' {
>   quietly: rename letter0`i' letter`i'
>   quietly: recode letter`i' (9=.) (2=1) (1=0)
>   * more lines of code here
> }
>
> Basically, instead of copy ~400 lines of code into several dozen cleaning
> files, I'd like to just set  the maximum value (50, 100, 20,
> etc) for the database and have it run one cleaning file.  Thanks for any
> help you can provide!

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