[R] package:AlgDesign and .Random.seed

[Uwe Ligges]

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
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> 
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