Greetings All!
With the Festive Season fast approaching, I bring you joy
with the news (which you will surely wish to celebrate)
that R cannot do arithmetic!
Usually, this is manifest in a trivial way when users report
puzzlement that, for instance,
sqrt(pi)^2 == pi
# [1] FALSE
which is the
I wouldn't blame R for floating-point arithmetic and our personal
feeling of what 'zero' should be.
options(digits=20)
pi
[1] 3.141592653589793116
sqrt(pi)^2
[1] 3.1415926535897926719
(pi - sqrt(pi)^2) 1e-15
[1] TRUE
There was a similar post before, for example see:
Yes.
See also Feigenbaum's constant and chaos theory for the general context.
Cheers,
Bert
On Sun, Dec 22, 2013 at 8:54 AM, Suzen, Mehmet msu...@gmail.com wrote:
I wouldn't blame R for floating-point arithmetic and our personal
feeling of what 'zero' should be.
options(digits=20)
pi
[1]
Thanks for the comments, Bert and Mehmet! It is of course a serious
and interesting area to explore (and I'm aware of the chaos context;
I initially got into this areas year ago when I was exploring the
possibilities for chaos in fish population dynamics -- and they're
certainly there)!
But,
(or whatever the keyboard analogue of that may be)
Hands clasped? Fingers interlaced?
John Kane
Kingston ON Canada
-Original Message-
From: ted.hard...@wlandres.net
Sent: Sun, 22 Dec 2013 18:37:18 - (GMT)
To: r-help@r-project.org
Subject: Re: [R] Season's Greetings
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