unif | R Documentation |
Give regularly spaced points on interval [-c,c]
with mean 0
(exactly) and variance about 1 (very close for even n
and larger round.dig
). Note that c
depends on n
.
unif(n, round.dig = 1 + trunc(log10(n)))
n |
positive integer specifying the number of points desired. |
round.dig |
integer indicating to how many digits the result is rounded. |
numeric vector of length n
, symmetric around 0, hence
with exact mean 0
, and variance approximately 1.
It relies on the fact that Var(1,2,...,n) = n(n+1)/12
.
Martin Maechler, ca 1990
runif
for producing uniform random numbers.
(u <- unif(8))
var(u)
(u. <- unif(8, 12))# more digits in result, hence precision for Var :
var(u.)
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