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Re: st: merging same variables within a dataset


From   Dmitriy Glumov <glumovdm@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: merging same variables within a dataset
Date   Mon, 15 Aug 2011 10:27:54 -0400

Eric,

Thank you for your response, it was very helpful. From your example,
how would I separate data for two different Amys (one from company d,
the second one from company f) without aggregating it? In other words,
 what should I change in order for Stata to add up the numbers for two
Amys from company d but keep Amy from f separate? Once again, thank
you for the consideration and, if anyone can help solve this problem,
it would be very much appreciated.

Dmitri

On Fri, Aug 12, 2011 at 4:10 PM, Eric Booth <ebooth@ppri.tamu.edu> wrote:
> <>
>
> I'd use -reshape- + -collapse-, not -merge-.
> You'll need to get carryforward for this example (-findit carryforward-):
> **************!
> clear
> inp str12(Name Position) Salary Bonus ///
> Compensation str10(Company)
> John  Manager    10  10 20 a
> Jack  Manager    20  20 30 a
> Brian  Director   10  10 40  c
> Amy  Manager    20  20 30   d
> John  Director    10  10 20  a
> Amy  Director    20  30 20   d
> Amy  Other      10      12      30 f
> end
>
>
> **Position and Companies in one String:
> g i = _n
> bys Name: g j = _n
> qui su j
> loc max `r(max)'
> reshape wide Position Company, i(i) j(j)
>
> foreach p in Position Company {
> forval n = 1/`max' {
> gsort Name -`p'`n'
> by Name: carryforward `p'`n', replace
> }
> **
> egen `p'_all = concat(`p'*) , punct(" ")
> replace `p'_all = trim(`p'_all)
> drop `p'?
> }
>
>
> **keep totals by Name:
> collapse (sum) Salary Bonus Compensation  ///
>        (first) Position_all Company_all, by(Name)
> **************!
> - Eric
> __
> Eric A. Booth
> Public Policy Research Institute
> Texas A&M University
> ebooth@ppri.tamu.edu
>
> On Aug 12, 2011, at 1:33 PM, Dmitriy Glumov wrote:
>
>> Hello,
>>
>> I have just started using Stata and have ran into a problem. I would
>> like Stata to identify observations within a dataset that have the
>> same name, and add their respective values. To give an example, the
>> sample of the dataset looks something like this:
>>
>> Name Position Salary Bonus Compensation Company
>> John  Manager    10       10         20                   a
>> Jack  Manager    20       20         30                   a
>> Brian  Director    10       10         40                   c
>> Amy  Manager    20       20         30                   d
>> John  Director     10       10         20                   a
>> Amy  Director     20       30         20                   d
>>
>>
>> And I want it to end up looking like this:
>>
>> Name   Position              Salary Bonus Compensation Company
>>
>> John  Manager/Director       20       20         40                   a
>> Jack  Manager                   20       20         30                   a
>> Brian  Director                   10       10         40                    c
>> Amy  Manager/Director      40       50         50                    d
>>
>> In short, I would like Stata to identify same names and then add
>> salary, bonus, and compensation together, while also keeping the
>> company name and position. It is best if the company displays only one
>> label during the merge ("a" instead of "aa" or "a-a", etc) but, as far
>> as position, either merging or appending or just displaying either
>> name would be fine (so ManagerDirector or just one of the names would
>> also work), I just don't want it to create an error during the
>> transformation process.
>>
>> Thank you for your consideration and any help with this would be
>> greatly appreciated.
>>
>> Dmitri
>> *
>> *   For searches and help try:
>> *   http://www.stata.com/help.cgi?search
>> *   http://www.stata.com/support/statalist/faq
>> *   http://www.ats.ucla.edu/stat/stata/
>
>
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>

*
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