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Re: st: Creating Dummy variables with names from underlying variables


From   Joerg Luedicke <joerg.luedicke@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Creating Dummy variables with names from underlying variables
Date   Fri, 14 Dec 2012 12:30:21 -0500

This would be one possibility:

levelsof zipcode, local(zip)
foreach i of numlist `zip' {
	gen zip_`i'=zipcode==`i'
}

Joerg


On Fri, Dec 14, 2012 at 12:14 PM, Ben Hoen <bhoen@lbl.gov> wrote:
> Hi all,
>
> I have been noodling around with this for a bit and although I have found
> many posts of how to create dummy variables (e.g.,
> http://www.stata.com/support/faqs/data-management/creating-dummy-variables/)
> , and how to apply values to labels (e.g., labmask), I have not yet found a
> way to name variables after the values used to create the dummy variables.
>
> I have a set of 30 or so zipcodes, that I want to create dummy variables
> for, and which I would like to name for their respective zipcodes, e.g,
> zip_08458, zip_25468, etc...
>
> Take, for example:
>
> set seed 1234
> sysuse auto, clear
> gen zipcode = 21210+ceil(5*runiform())
> tab zipcode, g(zip_)
>
> In this example I have five different zipcodes for which I created five
> unique dummy variables.  I would like to be able to create or change the
> name of the existing dummy variables "zip_1", "zip_2" etc. to include their
> respective zip codes.  Therefore the names of the dummy variables would
> ideally be "zip_21211", "zip_21212", "zip_21213", "zip_21214", and
> "zip_21215".
>
> Any ideas?
>
> Thanks, as always, in advance.
>
> Ben
>
>
> Ben Hoen
> Principal Research Associate
> Lawrence Berkeley National Laboratory
> Office: 845-758-1896
> Cell: 718-812-7589
> bhoen@lbl.gov
> http://emp.lbl.gov/staff/ben-hoen
>
> Visit our publications at:
> http://emp.lbl.gov/publications
>
>
>
>
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