Michael Kubovy wrote:> Dear r-helpers,
>
> Could you please help me solve the following problem: When I run
>
> require(AlgDesign)
> trt <- LETTERS[1:5]
> blk <- 10
> trtblk <- 3
> BIB <- optBlock(~., withinData = trt, blocksizes = rep(trtblk, blk))
>
> In response to the last command, R complains:
>
> Error in optBlock(~., withinData = trt, blocksizes = rep(trtblk, blk)) :
> object ".Random.seed" not found
>
> The documentation of optBlock() in AlgDesign doesn't say that I
> needed to set .Random.seed. I thought it was initiated automatically
> at the beginning of a session. What am I missing?
The first line in that function is
seed <- .Random.seed
but .Random.seed is generated at the first use of R's RNG, hence maybe
later. This means the function contains a bug which you should report to
the package maintainer, please.
Best,
Uwe Ligges
> > sessionInfo()
> R version 2.4.1 (2006-12-18)
> i386-apple-darwin8.8.1
>
> locale:
> C
>
> attached base packages:
> [1] "grid" "datasets" "stats"
"graphics" "grDevices"
> "utils" "methods" "base"
>
> other attached packages:
> AlgDesign xtable latticeExtra lattice
> gridBase MASS JGR iplots
> "1.0-7" "1.4-3" "0.1-4"
"0.14-16" "0.4-3"
> "7.2-32" "1.4-15" "1.0-5"
> JavaGD rJava
> "0.3-6" "0.4-14"
>
>
>
>
>
> _____________________________
> Professor Michael Kubovy
> University of Virginia
> Department of Psychology
> USPS: P.O.Box 400400 Charlottesville, VA 22904-4400
> Parcels: Room 102 Gilmer Hall
> McCormick Road Charlottesville, VA 22903
> Office: B011 +1-434-982-4729
> Lab: B019 +1-434-982-4751
> Fax: +1-434-982-4766
> WWW: http://www.people.virginia.edu/~mk9y/
>
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