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RE: st: RE: RE: replace blank string values
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
RE: st: RE: RE: replace blank string values
Date
Wed, 30 Jun 2010 21:21:48 +0200
<>
My code telescoped your two lines into
***********
bysort id (name): replace name=name[_N]
***********
But that is not strictly necessary...
The FAQ at http://www.stata.com/support/faqs/data/#manip are definitely
worth perusing for you. Full of neat tricks...
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of richard boylan
Sent: Mittwoch, 30. Juni 2010 21:11
To: [email protected]
Subject: Re: st: RE: RE: replace blank string values
Sorting by name is the trick, thank you.
sort id name
by id: replace name = name[_N]
On Wed, Jun 30, 2010 at 1:29 PM, Martin Weiss <[email protected]> wrote:
>
> <>
>
> Throw in a -sort- after -expand- to make this work:
>
>
> ***********
> ...
> expand 3
> sort id
> inp str10 name
> ...
> ***********
>
>
> HTH
> Martin
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Martin Weiss
> Sent: Mittwoch, 30. Juni 2010 20:26
> To: [email protected]
> Subject: st: RE: replace blank string values
>
>
> <>
>
>
> -sort-ing allocates the name to the end, so you can pick it up there...
>
> ***********
> clear*
> set obs 5
> gen byte id=_n
> expand 3
>
> inp str10 name
> ""
> Nick
> ""
> Kit
> ""
> ""
> ""
> Ben
> ""
> Maarten
> ""
> ""
> ""
> ""
> Martin
>
> l, sepby(id)
> bys id (name): replace name=name[_N]
> l, sepby(id)
> ***********
>
>
> HTH
> Martin
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of richard boylan
> Sent: Mittwoch, 30. Juni 2010 20:18
> To: [email protected]
> Subject: st: replace blank string values
>
> I have a dataset which is a panel: id, year where id is the numeric
> value the individual.
>
> I also have the name of the individual, however, for some
> observations, the name is missing.
>
> How do I go about replacing the missing values for name?
>
> One way that works is
> sort id year
> by id: replace name = name[_n + 1] if name == "" & name[_n + 1] ~= ""
> by id: replace name = name[_n + 1] if name == "" & name[_n + 1] ~= ""
> ...
> by id: replace name = name[_n + 1] if name == "" & name[_n + 1] ~= ""
>
> However, is there a more efficient way of doing this, say using egen?
>
> Richard
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>
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