Dear all,
             I am trying to analyse a set of CEL files. But I am getting an
error. Can anyone help me out with this? Thanks in advance.



*> data<-ReadAffy()
> data
AffyBatch object
size of arrays=1164x1164 features (10 kb)
cdf=HG-U133_Plus_2 (54675 affyids)
number of samples=12
number of genes=54675
annotation=hgu133plus2
notes=
> eset<-rma(data)
Background correcting
Normalizing
Error in rma(data) :
  VECTOR_ELT() can only be applied to a 'list', not a 'character'
*
*> sessionInfo()
R version 2.9.0 (2009-04-17)
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=C;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] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] cMAP_1.15.1          yeastExpData_0.9.9   graph_1.20.0
[4] hgu133plus2cdf_2.4.0 affy_1.16.0          preprocessCore_1.6.0
[7] affyio_1.6.1         Biobase_2.4.0

loaded via a namespace (and not attached):
[1] cluster_1.11.13 tools_2.9.0


*Regards,

Anupam

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