[EMAIL PROTECTED] wrote: > Full_Name: Pall Melsted > Version: 2.3.1
So you report a bug on a ancient version of R? Have you read the FAQ chapter on reporting bugs? Please do read the documentation! Addtionally, this is not a bug at all, but desired and documented behaviour. > OS: WinXP > Submission from: (NULL) (71.240.25.175) > > > Random set is not reset when starting R again. When R starts with a > > [Previously saved workspace restored] > > it seems that the .Random.seed variable is already set. If you quit R (and > don't > save your workspace) the next time you start R .Random.seed will be set to the > same value again. Yes, as documented. It is stored in object .Random.seed which is in the workspace (and saved once you save the workspace). > Steps to reproduce: > 1. Start R afresh and type runif(1) > 2. Quit R and do not save workspace > 3. Start R again (make sure a previous workspace was restored) type runif(1) > again, this will be the same "random" number as before. > >>From documentation on .Random.seed > > " > Initially, there is no seed; a new one is created from the > current time when one is required. Hence, different sessions will > give different simulation results, by default. > " > > This behavior is very counterintuitive and can mess up simulation results, > especially when sampling. The seed really should be set when R starts, > regardless of whether .Random.seed is set. It is set to some more or less "random" value, as documented. If you want something fixed, why not use set.seed? Uwe Ligges > > This bug has also been reproduced on MacOSX 10.4, R version 2.2.1 > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
