Hello,

I am trying to work out how to use the Beadarray package and am  
following the 'Expression analysis' exercise in the manual.

When I followed the instructions and typed the command

 > BLData = readIllumina(arrayNames = targets$arrayID, textType =  
".csv",
+ targets = targets, backgroundMethod = "none")

I got the error message

Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") : cannot open file 'NA/NA': No such file or  
directory

A Google search suggested that the problem was to do with the recent  
beadarray upgrade and that I needed to specify the files I wanted to  
read in by using the sectionNames argument.

So I tried this:

 > BLData = readIllumina(arrayNames = targets$arrayID, sectionNames =  
c("1318740_R007_C007", "1318740_R008_C006", "1318758_R002_C002",  
"1318758_R007_C004", "1318782_R004_C012", "1318791_R001_C007",  
"1318791_R002_C006", "1318803_R008_C010", "1328198_R002_C002",  
"1328227_R002_C002", "1328227_R007_C004"), textType = ".csv", targets  
= targets, backgroundMethod = "none")

and I got the error message

Error in data.frame(directory = dir, sectionName =  
sectionNames[validNames],  :
   arguments imply differing number of rows: 1, 0

Can anyone advise as to what the problem is? I'm sorry if this is a  
stupid question, in all honesty I don't really understand what the  
readIllumina command does and I can't seem to find a clear answer  
anywhere.

Thanks very much in advance, Sarah
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