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Re: st: adding a new variable to a dataset
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: adding a new variable to a dataset
Date
Wed, 19 Mar 2014 17:55:47 +0000
Sounds like a -merge-.
Nick
[email protected]
On 19 March 2014 17:52, Jean Sepulveda <[email protected]> wrote:
> Dear Statalisters,
>
> I have the following problem. Have a dataset with the unit of
> interest being a person (about 10 million observations). Each person
> has associated the variables, among many others, month, year and
> region. Thus for every month, year and region of the country there are
> thousands of observations of different people.
> I now want to add a new column with the variable unemployment_rate.
> This rate varies each month for each region, but does not vary among
> individuals during a particular month-year-region triplet.
>
> I have been adding the observations of the new variable in a manual
> way like this:
>
> gen unemploy=3.3 if month==1 & year==2010 & region==1
> replace unemploy=4.2 if month==2 & year==2010 & region==1
> replace unemploy=5.2 if month==3 & year==2010 & region==1
>
> and so on. There are 16 different regions, and 3 years of monthly data.
>
> Do you know of a faster way to do this?
>
> I would appreciate any help,
>
> Regards
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