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Re: st: Data loss with -reshape-


From   dferry <dferry@nber.org>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Data loss with -reshape-
Date   Thu, 19 Oct 2006 16:35:03 -0400

Oh, boy. I _am_ being an idiot. Thank you all for not saying so outright.  I must need a vacation. 

Danielle 

On Thu, 19 Oct 2006 21:16:32 +0100, "Radu Ban" <raduban@gmail.com> wrote:
> Hi Danielle,
> 
> I think this is only natural. Since a make can be either domestic or
> domestic at a time, then price1 (foreign price)  will be missing for
> domestic cars and price0 (domestic price) will be missing for foreign
> cars. Also note that the number of observations doesn't change when
> you do the reshape, so nothing is lost.
> 
> Best,
> Radu
> 
> 2006/10/19, dferry <dferry@nber.org>:
>> Dear Statalisters,
>> I seem to be losing data with -reshape-. This has never happened to me
> before. Am I just being a total idiot? (I am running the most recent
> version of Stata 9 SE on a Win XP box, and yes, I rebooted).
>>
>> . sysuse auto, clear
>> (1978 Automobile Data)
>>
>> . count if price==.
>>     0
>>
>> . reshape wide price, i(make) j(foreign)
>> (note: j = 0 1)
>>
>> Data                               long   ->   wide
>>
> -----------------------------------------------------------------------------
>> Number of obs.                       74   ->      74
>> Number of variables                  12   ->      12
>> j variable (2 values)           foreign   ->   (dropped)
>> xij variables:
>>                                   price   ->   price0 price1
>>
> -----------------------------------------------------------------------------
>>
>> . count if price1==.
>>    52
>>
>> . count if price0==.
>>    22
>>
>> Sincerely,
>> Danielle
>>
>>
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