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adding header info to write.table

2 messages · Liaw, Andy, Spencer Graves

Liaw, Andy
# 
I suppose one way to do it is to write the header info to the file first
(e.g., through connections, or sink(), etc.), then do write.table(...,
append=TRUE).

HTH,
Andy
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Spencer Graves
# 
A minor variant is to use "cat" for the initial headers: 

DF <- data.frame(a=1:2, b=c("a","B"))
cat("header1\nheader2\n", file="filename.csv")
cat("header3\n", file="filename.csv", append=TRUE)
write.table(DF, file="filename.csv", append=TRUE)

      In S-Plus 6.2 and R 1.8.2, this produces the following: 

header1
header2
header3
"a" "b"
"1" 1 "a"
"2" 2 "B"

      hope this helps.  spencer graves
Liaw, Andy wrote: