Hallo,

I have this kind of data and want to skip the "tag" column:

analyt    tag    probe1    probe2   
a1         IS        12           16   
a2          I         23            25  
a3          I         12           221   

My code:

exprs <- as.matrix(read.table(exprsFile, header=TRUE, sep="\t",row.names=1, as.is=TRUE))

So I am looking for a read.table command, which allows me to skip the "tag" coloumn. I can find only commands to skip a row.

Thanks

This is an R question so suitable for the r-help mailing list or StackOverflow or ?read.table. However, the answer is to use the colClasses argument, e.g.,

read.table(exprsFile, header=TRUE, sep="\t", row.names=1, as.is=TRUE,
    colClasses = c(tag="NULL"))