[R] Seed of Random number generation

cls59 sharpsteen at mac.com
Sat May 2 06:28:47 CEST 2009

RON70 wrote:
> Dear all, is it possible to extract the seed that was used for some random
> number generation? For example suppose I draw a random sample of size 1000
> from a normal population :
> rnorm(1000)
> Now I want to know what seed R used for that sample generation. Any way
> out?
> Thanks and regards,

I believe R creates a random seed after a random number generation function
such as rnorm is called. The seed is stored in the vector .Random.seed  .
See ?RNG for more info on how to load, save and tweak the random seed.

Charlie Sharpsteen
Environmental Resources Engineering
Humboldt State University
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