Dear R-users,
I have 10 data files in gpr format (dat1.gpr,
dat10.gpr). I want to read in
these files one by one in R and then add one extra column (called log) to each
data file as below
data.file=sort(dir(path ='C:/Documents and Settings/ Mina dokument/data1,
pattern = ".gpr$",full.names = TRUE))
num.data.files<- length(data.file)
num.data.files
i=1
### read one data file
data<-read.table(file =
data.file[i],skip=31,header=T,sep='\t',na.strings="NA")
### Define the log ratio using values in column 2 resp 8
log=as.matrix(log((data[,2])/(data[,8])))
### append column called log to data frame data, for the reading data file
data=cbind(data,log)
### Read remaining data files
for (i in 2:num.data.files) {
data<-read.table(file=data.file[i],header=T,skip=31,sep='\t',na.strings="NA")
log=as.matrix(log((data[,2])/(data[,8])))
data=cbind(data,log)
}
Now I want to export these files (with an extra column in each) as gpr-files
in a folder called data2 but dont know exactly how to do it, can you help me
out ?
Thanks for your help,
Jenny
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