Hi all,

I use the function expresso from the affy package for normalizing microarray data, and tell expresso to use vsn as normalization method. This went fine for years but the current version of vsn (3.42.3) no longer exports the normalize.AffyBatch.vsn method. Hence, expresso no longer finds vsn as normalization method. Is this a bug or intention? If I force the export, expresso seems to execute vsn-normalisation as expected.

Cheers,

Claudio

It's still there for me.

> library(affy)

> library(vsn)
> normalize.AffyBatch.methods()
[1] "constant"         "contrasts"        "invariantset"     "loess"         
[5] "methods"          "qspline"          "quantiles"        "quantiles.robust"
[9] "vsn"           
> sessionInfo()
R version 3.3.1 (2016-06-21)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Debian GNU/Linux 8 (jessie)

locale:
[1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C            
[3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8  
[5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8 
[7] LC_PAPER=en_US.UTF-8       LC_NAME=C               
[9] LC_ADDRESS=C               LC_TELEPHONE=C          
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] parallel  stats     graphics  grDevices utils     datasets  methods
[8] base     

other attached packages:
[1] vsn_3.42.3          affy_1.52.0         Biobase_2.34.0   
[4] BiocGenerics_0.20.0

loaded via a namespace (and not attached):
[1] Rcpp_0.12.7           lattice_0.20-34       assertthat_0.1     
[4] plyr_1.8.4            grid_3.3.1            gtable_0.2.0       
[7] scales_0.4.1          ggplot2_2.2.0         BiocInstaller_1.24.0
[10] zlibbioc_1.20.0       lazyeval_0.2.0.9000   affyio_1.44.0      
[13] limma_3.30.3          preprocessCore_1.36.0 tools_3.3.1        
[16] munsell_0.4.3         compiler_3.3.1        colorspace_1.3-0   
[19] tibble_1.2         
>

Oops, it seems that I messed up my previous installation (with vsn version 3.42.0). Now thinks work fine for me as well.Thanks for the hint!

Cheers, Claudio