[BioC] problem reading GenePix files with .XLS extension

[Srinivas Iyyer]

Hello:


I am a fist time trying to analyze cdna data and right
at the first step i was bombed.  can any one please
help me:


>library(Biobase)
>library(marray)
>samples = read.phenoData("phenodata.txt",header=TRUE,
as.is = TRUE)
> files = samples$fileName

spree of errors starts here:

## the .XLS files are downloaded from Garber_lung
data. 
## software used in GenePix
## path : I am using windows based R so changed the 
## directory to where all my .XLS files area locatd

> mdata = read.GenePix(files, path=".")
Error in if (skip > 0) readLines(file, skip) : 
        missing value where TRUE/FALSE needed


>mdata = read.GenePix(files, ext = 'xls')
Error in if (skip > 0) readLines(file, skip) : 
        missing value where TRUE/FALSE needed


> mdata = read.marrayRaw(files,ext = "xls")
Error in if (is.na(pattern)) { : argument is of length
zero

> nmdata = read.marrayRaw(nfs, ext="xls")
Error in if (is.na(pattern)) { : argument is of length
zero
> nmdata = read.marrayRaw(nfs, ext="xls", skip = 22)
Reading ...  ./shu058.248-97_LCLC.xls 
Error in read.table(f, skip = skip2, header = TRUE,
sep = sep, quote = quote,  : 
        unused argument(s) (ext ...)


How do I read these XLS files and retain all the
inforamtion. 

can any one please give R commands till I get to
normalization procedure. 

Thank you

srini