Hi everyone

I am working with my gpr files with bioconductor. I have a problem, which i
believe could be trivial.  I encounter a problem which sends an error
message and i could not proceed after the read.maimages step.

We use scanarrayexpress software (Perkin elmer) and stanford microarray
chips to generate gpr files.

I am giving you the output i got from R. Please let me know where ive gone
wrong.

> filenames <- c("hov163N.gpr",
"hov169.gpr","hov171.gpr","hov172.gpr","hov175N.gpr","hov176.gpr","hov206.gpr","hov207N.gpr","hov215.gpr","hov221N.gpr","hov222.gpr","hov226.gpr","hov229.gpr","hov234.gpr","hov239.gpr")

> data <- read.GenePix(filenames)
Reading ...  hov163N.gpr
Reading ...  hov169.gpr
Reading ...  hov171.gpr
Reading ...  hov172.gpr
Reading ...  hov175N.gpr
Reading ...  hov176.gpr
Reading ...  hov206.gpr
Reading ...  hov207N.gpr
Reading ...  hov215.gpr
Reading ...  hov221N.gpr
Reading ...  hov222.gpr
Reading ...  hov226.gpr
Reading ...  hov229.gpr
Reading ...  hov234.gpr
Reading ...  hov239.gpr

> filenames
 [1] "hov163N.gpr" "hov169.gpr"  "hov171.gpr"  "hov172.gpr"  "hov175N.gpr"
 [6] "hov176.gpr"  "hov206.gpr"  "hov207N.gpr" "hov215.gpr"  "hov221N.gpr"
[11] "hov222.gpr"  "hov226.gpr"  "hov229.gpr"  "hov234.gpr"  "hov239.gpr"

> rg <- read.maimages(filenames, source="genepix")
Read hov163N.gpr
Read hov169.gpr
Read hov171.gpr
Read hov172.gpr
Read hov175N.gpr
Read hov176.gpr
Read hov206.gpr
Read hov207N.gpr
Read hov215.gpr
Read hov221N.gpr
Read hov222.gpr
Error in readGPRHeader(fullname) :
  File is not in Axon Text File (ATF) format

Thank you for your time looking into this.


Raja

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