Hello,

I tried to do plot an quality control picture for affy data using the
simpleaffy library. To simply illustrate my problem I used the Dilution
dataset available within the bioconductor package affydata (see below).
I also tried to independently read the values of for example alpha1
[alpha1 = getAlpha1(cleancdfname(cdfName(Dilution)))] which resulted in
the same error (object : .qcEnv: not found). Anybody any idea?

Richard


Code & error:

library(affydata)
> data(Dilution)
> qc(Dilution)
Error in get("spikes", envir = .qcEnv) : object ".qcEnv" not found



sessionInfo()
R version 2.5.0 (2007-04-23) 
i686-pc-linux-gnu 

locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C

attached base packages:
[1] "splines"   "tools"     "stats"     "graphics"  "grDevices"
"utils"    
[7] "datasets"  "methods"   "base"     

other attached packages:
  affydata simpleaffy genefilter   survival       affy     affyio
Biobase 
  "1.11.2"   "2.10.0"   "1.14.1"     "2.31"   "1.14.0"    "1.4.0"
"1.14.0" 

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