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Re: st: Log Transformation of Variable
From
Eric Booth <[email protected]>
To
"<[email protected]>" <[email protected]>
Subject
Re: st: Log Transformation of Variable
Date
Sat, 26 Feb 2011 17:59:20 +0000
<>
You can use the log10() function, but (log+e) is not a recognized Stata function. See help math_functions.
e.g.,
g transformed_dv = -log(dv)-log10(dv)
*or*
g transformed_dv = -(log(p)+log10(p))
- Eric
__
Eric A. Booth
Public Policy Research Institute
Texas A&M University
[email protected]
Office: +979.845.6754
On Feb 26, 2011, at 11:04 AM, Melissa King wrote:
> Good Morning,
>
> I have a dataset that I would like to transform by multiplying the
> dependent variables by -log - e, or in other words, the negative
> logarithm minus its base. Despite searching this forum and the
> Internet, I have been unable to find any information on how to "tell"
> Stata to do this. I am able to transform my variable by multiplying it
> by negative log:
>
> generate transformed_dep_variable = -log(dep_variable)
>
> However, Stata errors out when I try to communicate -(log+e), because
> it no longer recognizes log as a function when I type this in:
>
> generate transformed_dep_variable = -(log+e)(dep_variable)
>
> Do any long-time Stata users have any suggestions?
>
> Thank you in advance for your help!
>
> All best,
>
> Melissa King
>
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*
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