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Re: st: erfc function
From
"Heyman, James E." <[email protected]>
To
"<[email protected]>" <[email protected]>
Subject
Re: st: erfc function
Date
Wed, 2 May 2012 13:45:43 +0000
Thanks much. In retrospect, I would have saved a lot of time going for a bespoke solution rather than searching for a built-in one.
James E. Heyman, PhD
Associate Professor of Marketing
University of St. Thomas
Opus College of Business
1000 LaSalle Ave (TMH443N)
Minneapolis, MN 55403
___o
`\ <,_
@ / @
On May 2, 2012, at 1:49 AM, Maarten Buis wrote:
--- On Wed, May 2, 2012 at 12:51 AM, Heyman, James E. wrote:
I feel like an idiot for asking but can somebody please tell me where the erfc (complementary error function) is in Stata?
--- On Wed, May 2, 2012 at 2:07 AM, Nick Cox wrote:
Look at e.g.
. twoway function 2 * (1 - normal(x)) , ra(-10 10)
Alternatively:
twoway function 2 * normal(-x) , ra(-10 10)
With this version you are a bit less likely to be bitten by precision
problems, see:
William Gould (2006) Mata Matters: Precision, The Stata Journal, 6(4): 550-560.
<http://www.stata-journal.com/article.html?article=pr0025>
Hope this helps,
Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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