On 22/01/2013 23:22, Marius Hofert wrote:
Dear expeRts,
./src/library/base/man/Random.Rd says that L'Ecuyer requires a seed of length 6.
./src/library/parallel/man/RngStream.Rd also mentions this, but only in the text
part; In the "Arguments"-part, it says that "seed" has to be of length 7
Also:
,----
| > RNGkind("L'Ecuyer-CMRG")
| > length(.Random.seed)
| [1] 7
`----
Is the docu old? Some clarification on the two .Rd files would be great.
Cheers,
Marius
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What the help page actually says is
seed: An integer vector of length 7 as given by ‘.Random.seed’ when
the ‘"L'Ecuyer-CMRG"’ RNG is in use. See ‘RNG’ for the valid
values.
.Random.seed is not the seed per se, it is an indicator of the random
number generators in use, followed by the seed. So for a generator with
seed of length 6, .Random.seed is indeed of length 7.
--
Brian D. Ripley, rip...@stats.ox.ac.uk
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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