Hello,



I need to analyze a microarray dataset that used Human Gene 1.1 ST Array.  When
I ran following command lines:



library(affy)

library(limma)

Data <- ReadAffy()



I got this warning message and error:



Warning message:



The affy package can process data from the Gene ST 1.x series of arrays,

but you should consider using either the oligo or xps packages, which are
specifically

designed for these arrays.



> Data

AffyBatch object

size of arrays=1190x990 features (25 kb)

cdf=HuGene-1_1-st-v1 (??? affyids)

number of samples=20

Error in (function (package, help, pos = 2, lib.loc = NULL, character.only
= FALSE,  :

  ‘hugene11stv1cdf’ is not a valid installed package

In addition: Warning message:

missing cdf environment! in show(AffyBatch)



May someone let me know how I could fix this problem?



Thanks,

Jerry

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