[BioC] Unable to find an inherited method for function ‘exprs’

Dave Tang davetingpongtang at gmail.com
Wed Aug 14 06:32:44 CEST 2013

On Wed, 14 Aug 2013 12:13:31 +0900, Wolfgang Huber <whuber at embl.de> wrote:

> Dear Dave
> this is actually not an error. The function 'exprs' expects and  
> argument, and since you are giving it none, it complains, and one should  
> not blame it for that.
> Perhaps can you tell us what you want to achieve, then it should be  
> easier to help!

Dear Wolfgang,

Sorry for the incomplete email; I (incorrectly) thought there was a  
problem with the exprs() function and thus minimised the example.

Here's the code following the virtualArray vignette:

GSE13507 <- getGEO("GSE13507",GSEMatrix=FALSE, AnnotGPL=FALSE)
Error in (function (classes, fdef, mtable)  :
   unable to find an inherited method for function ‘exprs’ for signature  

R version 3.0.1 (2013-05-16)
Platform: x86_64-w64-mingw32/x64 (64-bit)

[1] LC_COLLATE=English_Australia.1252  LC_CTYPE=English_Australia.1252
[3] LC_MONETARY=English_Australia.1252 LC_NUMERIC=C
[5] LC_TIME=English_Australia.1252

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

other attached packages:
[1] GEOquery_2.26.2    Biobase_2.20.1     BiocGenerics_0.6.0

loaded via a namespace (and not attached):
[1] RCurl_1.95-4.1 tools_3.0.1    XML_3.98-1.1



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