udexp | R Documentation |
Create UNU.RAN object for an Exponential distribution with
rate rate
(i.e., mean 1/rate
).
[Distribution] – Exponential.
udexp(rate=1, lb=0, ub=Inf)
rate |
(strictly positive) rate parameter. |
lb |
lower bound of (truncated) distribution. |
ub |
upper bound of (truncated) distribution. |
The Exponential distribution with rate λ has density
f(x) = lambda exp(-lambda x)
for x ≥ 0.
The domain of the distribution can be truncated to the
interval (lb
,ub
).
An object of class "unuran.cont"
.
Josef Leydold and Wolfgang H\"ormann unuran@statmath.wu.ac.at.
N.L. Johnson, S. Kotz, and N. Balakrishnan (1994): Continuous Univariate Distributions, Volume 1. 2nd edition, John Wiley & Sons, Inc., New York. Chap. 19, p. 494.
unuran.cont
.
## Create distribution object for standard exponential distribution distr <- udexp() ## Generate generator object; use method PINV (inversion) gen <- pinvd.new(distr) ## Draw a sample of size 100 x <- ur(gen,100)
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