Try printing floor(100*.29): you have forgotten about representation
error.
From the help page:
n: number of observations. If 'length(n) > 1', the length is
taken to be the number required.
and you asked for (just) less than 29 observations, and got what you asked
for.
On Thu, 7 Aug 2008, [EMAIL PROTECTED] wrote:
Full_Name: Paul Eckermann
Version: 2.7.1
OS: Windows XP Service Pack 2
Submission from: (NULL) (129.127.183.12)
This is the first time I have submitted a bug report, so apologies if I have not
followed the correct protocol.
If I enter
length(rnorm(100*.29))
it returns 28 rather than 29.
y<-(1:100)/100
z<-sapply(y,function(x) length(rnorm(x*100)))
z!=100*y
indicates that it has something to do with multiples of 7 (rounding error?),
even though 29, 57 and 58 are the 3 values for which it returns incorrect values
of z.
I hope that this is not something obvious that I have missed. This can
be overcome by doing the x*100 calculation outside the rnorm function,
but I don't see why this needs to be done when the answer is (supposed
to be) an integer.
Supposed by whom?
Regards,
Paul Eckermann
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Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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