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Re: st: unsort while merging
From
Fernando Rios Avila <[email protected]>
To
[email protected]
Subject
Re: st: unsort while merging
Date
Wed, 18 Jul 2012 12:38:11 -0400
Hi Tashi
I might suggest an indirect solution.
Before you merge your master data, you can create an index variable:
gen n=_n
so after you merge it, you can just sort it by n, and the final
version will have a similar (if not the same) structure as it
originally had.
Hope this helps
Fernando
On Wed, Jul 18, 2012 at 12:22 PM, tashi lama <[email protected]> wrote:
>
> Hello,
>
> Stata sorts the variable after merging. I have a situation where I want to keep it the way it is(unsorted) after merge. Here is my dataset
>
>
>
> Using dataset
>
> id name
>
> 1 Tom
>
> 2 Jack
>
> 3 Micheal
>
>
>
> Master dataset
>
> location id
>
> A 1
>
> A 2
>
> A 3
>
> B 2
>
> B 1
> C 1
> C 3
>
>
>
> when I do merge m:1 id using file1, keep(match)
>
>
>
> location id name _merge |
> |---------------------------------------|
> 1. | B 1 Tom matched (3) |
> 2. | C 1 Tom matched (3) |
> 3. | A 1 Tom matched (3) |
> 4. | B 2 Jack matched (3) |
> 5. | A 2 Jack matched (3) |
> |---------------------------------------|
> 6. | A 3 Michael matched (3) |
> 7. | C 3 Michael matched (3) |
>
>
>
>
> As can be seen, the master dataset is grouped by location. After merge the group is broken since merge has sorted id. Immediate thought is to merge by group but merge doesn't allow by. I don't care much if it sorts inside the group location like follows. Any idea...
>
>
>
> A 1 Tom
>
> A 2 Jack
>
> A 3 Michael
>
> B 1 Tom
>
> B 2 Jack
>
> C 1 Tom
> C 3 Michael
>
>
>
> Thanx..
>
>
>
>
> *
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*
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