Nit-picking about syntax does seem needed, mea culpa, I
intended something more like:
Qn <- ecqf(x)
Qn(runif(whatever))
On Jan 6, 2009, at 5:06 PM, roger koenker wrote:
Sure, but it would be more 'fun' to modify ecdf() slightly to produce
an ecqf() function -- essentially reversing the arguments to
approxfun()--
and then use
ecqf(runif(whatever))
no nit-picking about efficiency, please.
url: www.econ.uiuc.edu/~roger Roger Koenker
email rkoen...@uiuc.edu Department of Economics
vox: 217-333-4558 University of Illinois
fax: 217-244-6678 Champaign, IL 61820
On Jan 6, 2009, at 4:42 PM, Antonio, Fabio Di Narzo wrote:
If the ecdf is 'ecdf(x)', do just:
sample(x, size=whatever, replace=TRUE)
HTH,
Antonio.
2009/1/6 culpritNr1 <ig2ar-s...@yahoo.co.uk>:
Hi All,
Does anybody know if there is a simple way to draw numbers from an
empirical
distribution?
I know that I can plot the empirical cumulative distribution
function this
easy:
plot(ecdf(x))
Now I want to pick a number between 0 and 1 and go back to domain
of x.
Sounds simple to me.
Any suggestion?
Thank you,
Your culprit
(everybody needs a culprit)
--
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http://www.nabble.com/Drawing-from-an-empirical-distribution-tp21320810p21320810.html
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--
Antonio, Fabio Di Narzo
Ph.D. student at
Department of Statistical Sciences
University of Bologna, Italy
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