[R] How can I read the actual value (?) defined by set.seed(?) earlier?

Prof Brian Ripley ripley at stats.ox.ac.uk
Wed Nov 28 09:28:08 CET 2007


On Wed, 28 Nov 2007, Johannes  Reichl wrote:

> I need to get the seed value that has been set by set.seed() earlier. I
> only do have the workfile *.Rdata so I can not simply look to the code.

You cannot: it is not stored at the time.  set.seed() sets .Random.seed, 
and you can save/restore that.  However, the workspace will only contain 
the current value, not the initial value.

Normally the history is saved when you save the workspace: perhaps you do 
still have that and can search it for your call to set.seed (if there is 
one: there need not be).

-- 
Brian D. Ripley,                  ripley at 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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