Hi all,

I have a huge data set. All I want to do is to change the column names of
the it. So if I use read.table, I can read the data in and change colnames
and then write back, such as,

t <- read.table("a.txt", header = T, sep = "\t")

colnames(t)

colnames(t) <- c("....) # new column names

write.table(t, "a.txt", quote = F, sep = "\t", row.names = F, col.names = T)

My question is that is there a better to do this without reading in and
write out data entirely?

Thanks.

Alex

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