On Nov 8, 2007 5:32 AM, b. water <[email protected]> wrote:
> dear all,
>
> stata 8.2,
>
> would appreciate advice on how the following data management transformation can be undertaken:
>
> at the moment data look like this:
>
> Epid Att Ned Yag Pallad
> Gord Molb Nur Zn
> Yes 5 twice Off Present
> 2 3 PRN no
> No 4 no On Present
> 0 1 no yes
> . . . . .
> . . . .
> . . . . .
> . . . .
> Yes 5 twice Off Present
> 2 3 PRN no
> No 4 no On Present
> 0 1 no yes
>
> i want to change it so it looks like this:
>
> Epid Att Ned Yag Pallad Gord Molb Nur Zn
> Yes 5 twice Off Present 2 3 PRN no
> No 4 no On Present 0 1 no yes
> .
> .
> .
> .
> Yes 5 twice Off Present 2 3 PRN no
> No 4 no On Present 0 1 no yes
>
>
Like this?
clear
tempfile foo1 odd even
input str4 Epid str4 Att str5 Ned str3 Yag str7 Pallad
Gord Molb Nur Zn
Yes 5 twice Off Present
2 3 PRN no
No 4 no On Present
0 1 no yes
end
l
save `foo1',replace
keep if mod(_n,2)
drop Pall
ds
foreach l in `r(varlist)' {
local a `=`l'[1]'
rename `l' `a'
}
drop in 1
save `odd', replace
use `foo1',clear
keep if ! mod(_n,2)
save `even', replace
merge using `odd'
drop _m
l
Scott
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