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st: Re: nested foreach to rename variables


From   "Scott Merryman" <smerryman@kc.rr.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: nested foreach to rename variables
Date   Tue, 15 Oct 2002 22:38:01 -0500

----- Original Message -----
From: "Buzz Burhans" <wsb2@cornell.edu>
To: <statalist@hsphsun2.harvard.edu>
Sent: Tuesday, October 15, 2002 9:31 PM
Subject: st: nested foreach to rename variables


> I would appreciate any pointers on how to get this loop to work. After
> using insheet I have variables named var3, var4, var5...var14 which
> correspond to measurements made on day  18, 15, 12, 9, 7, 6, 5, 4, 3, 2,
1,
> 0 before an event.  I have used the following to rename the variables,
> unsuccessfully.  It renames v3 to preday18, but names v4 to preday0 and
> then fails on v5 with the error message "preday0 already defined.  it
seems
> I'm losing the value of `d2' generated in the nested "foreach num" loop
> when it returns to the first "foreach var" loop. perhaps it's just late,
> but i can't seem to come up with a variation that works.
>
> My construct is:
>
> local d = 18
> local d2 string(`d')
> foreach var of varlist v3-v14 {
>
>
> renamev `var' "preday"+ `d2'
>
> foreach num of numlist  15 12 9 7 6 5 4 3 2 1 0 {
> local d = `num'
> local d2  string(`d')
>
> }
>
>
> }
>
>
> Thanks
>
> Buzz Burhans
> Dept. of Animal Science
> Cornell University
>

How about simpler construction:

for var v3-v14  \ num 18 15 12 9 7 6 5 4 3 2 1 0: rename X predayY


Scott



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