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AW: st: AW: unbalanced panel
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
AW: st: AW: unbalanced panel
Date
Thu, 22 Jul 2010 11:54:09 +0200
<>
-destring- may well be the more appropriate command. Where did I recommend -generate-?
The "long" data type won`t hurt you unless you run into memory constraints. -compress- will automatically change your variables to the lowest data type required to hold them...
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]] Im Auftrag von [email protected]
Gesendet: Donnerstag, 22. Juli 2010 11:46
An: [email protected]
Betreff: Re: st: AW: unbalanced panel
Dear Martin,
I used the encode and generate commands as you suggested to convert my strings
into "long" type variables and now I'm trying the xtset!
Thanks!
Αρχικό μήνυμα από Martin Weiss <[email protected]>:
>
> <>
>
>
> BTW, -destring- has an option -dpcomma- designed for conversion from comma
> to decimal point:
>
>
>
> *************
> clear*
>
> set obs 2
> generate str var1 = "5,43" in 1
> generate var2 = 4.32 in 1
> replace var1 = "4.32" in 2
> replace var2 = 2.65 in 2
>
> describe
> destring var1, replace dpcomma
> describe
> *************
>
>
>
> HTH
> Martin
>
>
> -----Urspr¨Ήngliche Nachricht-----
> Von: [email protected]
> [mailto:[email protected]] Im Auftrag von
> [email protected]
> Gesendet: Donnerstag, 22. Juli 2010 11:15
> An: [email protected]
> Betreff: st: unbalanced panel
>
> Hi everybody!
> I would like to ask your help on unbalanced panel in Stata.
> As I'm a begginner in Stata, sorry if my questions are silly!
> I have create a sheet in Excel that consists of 25 countries with
> observations
> covering a 18 year period. For some countries some observations for some
> years
> are missing, so I left these cells empty and I think I should run an
> unbalanced
> panel (two way FE) to see the time and country effects.
> 1)I have imported these data in Stata and some of my observations are marked
> in
> red whereas some other are as usual in black letters. Do these red written
> observations indicate that something's going wrong or is it so because they
> are
> decimal numbers including commas?
> 2)When I'm trying to estimate the time effects and two way fixed effects in
> my
> data the xtreg does not work.
> i()required
> appears in Stata screen.
> Perhaps I do not use the right commands.
> I follow the process that ¦ʼaum suggests in his book.
> That is:
> .tabulate year, generate (yr)
> .forvalues i=1990/2007{
> 2. local ++j
> 3. rename yr'j' yr'i'
> 4. quietly replace yr'i'=yr'i'-yr18
> 5. }
> .drop yr18
> .xtreg MY DEPENDENT {MY INDIPENDENT} yr*, fe
> Can you please suggest which command should I use?
> Many thanks!
>
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>
>
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