Question: Problem in processing microarray data with HuEx-1_0-st-v1 platform
gravatar for ashuein
2.3 years ago by
ashuein0 wrote:

When I am trying to process a micro-array data with Array Express id E-GEOD-21298, I get the following error:

Code Run:

  >rawDat<- read.celfiles(celFile)
  >norDat<- oligo::rma(rawDat,background=TRUE,normalize=TRUE,target="core")

Platform design info loaded.
Reading in : ./GSM532260.CEL
Reading in : ./GSM532261.CEL
Reading in : ./GSM532262.CEL
Reading in : ./GSM532263.CEL
Reading in : ./GSM532264.CEL
Reading in : ./GSM532265.CEL
Reading in : ./GSM532274.CEL
Reading in : ./GSM532277.CEL
Reading in : ./GSM532278.CEL
Reading in : ./GSM532279.CEL
[1] ""
Background correcting
Calculating Expression
  **Error in (function (classes, fdef, mtable)  : 
      unable to find an inherited method for function ‘columns’ for signature ‘"AffyExonPDInfo"’**

I am unable to understand this error. Any help with this error ?

Also, this array belongs to HuEx-1_0-st-v1 while the current available annotation package in Bioconductor is HuEx-1_0-st-v2 . [Which might be the reason of above error] Running the command:


gives error:

package ‘’ is not available (for R version 3.4.4)

So how do I annotate the processed files for the older version ?

ADD COMMENTlink modified 2.3 years ago by Kevin Blighe65k • written 2.3 years ago by ashuein0

See if these notes help. That link came from this thread.

ADD REPLYlink written 2.3 years ago by genomax89k
gravatar for Kevin Blighe
2.3 years ago by
Kevin Blighe65k
Kevin Blighe65k wrote:

There have indeed been issues with this array's annotation package. There is further discussion here: package doubt.

What you should do is download the CDF from GenoMax's first link - you will require a login for Affymetrix and then, also, to unzip the downloaded file. Then set it up as a custom CDF by following this tutorial: How To Install A Specific Cdf Package For Use In Bioconductor

Once you have it set up, you can then explicitly specify it like this:

project <- read.celfiles(CELFiles, package="HuEx-1_0-st-v2-cdf")

If you don't specify 'package', here, then the function will just attempt to download the erronous package yet again. It even failed on my computer.

By the way, I'm not sure why you were trying to install via biocLite() '' when these arrays are actually ''.


ADD COMMENTlink modified 15 months ago • written 2.3 years ago by Kevin Blighe65k
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