On 06/07/2011 01:38 PM, Parida, Mrutyunjaya wrote:
Hi
fn<- dir(pattern="txt",full.name=T)
  fn
[1] "./GSM696980_US81503234_252741110209_S01_CGH_107_Sep09_1_1_32914.txt"
[2] "./GSM696981_US81503234_252741110209_S01_CGH_107_Sep09_1_2_32916.txt"
[3] "./GSM696982_US81503234_252741110209_S01_CGH_107_Sep09_1_3_33021.txt"
[4] "./GSM696983_US81503234_252741110209_S01_CGH_107_Sep09_1_4_33024.txt"
RG<- 
read.maimages(fn,source="agilent",quote="",other=c("gProcessedSignal","rProcessedSignal","gProcessedSigError","rProcessedSigError"),
+ columns=list(G = "gMeanSignal",Gb = "gBGMedianSignal", R ="rMeanSignal", Rb = 
"rBGMedianSignal"))
Error in readGenericHeader(fullname, columns = columns, sep = sep) :
   Specified column headings not found in file


I am trying to read the data into R using read.maimages(), but it is showing me 
this error. The data is from agilent and I checked the columns they exist on 
the dataset. I am also sending you an array file with this email.
Please comment on this.

This is a Bioconductor package so please ask there.

  http://bioconductor.org/help/mailing-list/

Perhpas not all the files are the same, and the headings are missing from some, or the files are produced by different versions of agilent software and so have different numbers of headings, or...

Martin

Thanking you
Mrutyunjaya Parida



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