Hi Sebastian and Carter,
wouldn't
by bld: egen mean_x=mean(x)
do the same thing, or am I confused here?
Of course, it would include the x for the worker in question in the mean,
which might not be what you want or need.
Regards,
Kristin J. Kleinjans
> Carter,
>
> I do not think you need the -forvalues- or -foreach- command here. What
> you are asking for can also be achieved with the following:
>
> //inputting example data
> clear
> input id bld bld1 bld2 bld3 bld4 bld5 x1 x2 x3 x4 x5
> 1 10 11 10 10 10 11 6 7 2 4 2
> 2 11 11 11 13 13 11 6 8 4 7 0
> 3 12 12 12 12 12 12 6 1 2 4 3
> 4 13 13 10 10 10 14 10 5 10 9 5
> 5 14 15 14 . . . 3 10 5 1 3
> 6 15 15 . . . . 2 6 5 2 7
> end
>
> // rename bld to bld_id
> ren bld bld_id
>
> // reshape the data to long structure
> reshape long bld x, i(id) j(cow_no 1 2 3 4 5)
>
> // determine the mean value of x for those coworkers within the same //
> building - will not record anything if bld_id id missing (.)
> bys id: egen bld_mean_x = mean(x) if bld == bld_id & bld_id != .
>
> // make sure that values is entered in any observation belonging to //
> an id
> bys id (bld_mean_x): replace bld_mean_x = bld_mean_x[1]
>
> // reshape the data back to wide
> reshape wide bld x, i(id) j(cow_no)
>
> The mean value for x for co-workers from the same building can now be
> found in the variable bld_mean_x.
>
> Regards
> Sebastian
>
>
> On 4/19/07, Carter Rees <[email protected]> wrote:
>> Statalist,
>>
>> I have the variables id (person id), bld (person's building code),
>> bld1-bld5 (building codes for 5 nominated co-workers). I also have
>> various co-worker characteristics in my file. For illustration, let
>> x1-x5 be one of the characteristics listed for each co-worker. The
>> data are constructed as:
>>
>> id bld bld1 bld2 bld3 bld4 bld5 x1 x2
>> x3 x4 x5
>> 1 10 11 10 10 10 11 6 7
>> 2 4 2
>> 2 11 11 11 13 13 11 6 8
>> 4 7 0
>> 3 12 12 12 12 12 12 6 1
>> 2 4 3
>> 4 13 13 10 10 10 14 10 5
>> 10 9 5
>> 5 14 15 14 3 10
>> 5 1 3
>> 6 15 15 2 6
>> 5 2 7
>>
>> For each person id, I would like to construct a variable that is the
>> mean value of only those co-workers who are in the same building. For
>> example, the first case would only include co-workers in building 10
>> which would result in an average of (7+2+4)/3 = 4.33. -forvalues-
>> and/or -foreach- seems appropriate here but I can't seem to get it
>> quite right.
>>
>> Many thanks,
>>
>> Carter
>>
>> *
>> * For searches and help try:
>> * http://www.stata.com/support/faqs/res/findit.html
>> * http://www.stata.com/support/statalist/faq
>> * http://www.ats.ucla.edu/stat/stata/
>>
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
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* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
