Alright, if it is the case that the "output file" already exists, then yes
Sven's suggestion is more or less the only solution.
Henrik
On Oct 22, 2014 2:08 AM, "Sven E. Templer" wrote:
> He wants to prepend, not append.
>
> On 22 October 2014 11:04, Henrik Bengtsson wrote:
> > You can! Open a f
He wants to prepend, not append.
On 22 October 2014 11:04, Henrik Bengtsson wrote:
> You can! Open a file connection and write to that. Whatever write commands
> you use will append to the output. Don't forget to close the connection at
> the end. See ?file
>
> Henrik
>
> On Oct 22, 2014 12:33 AM
You can! Open a file connection and write to that. Whatever write commands
you use will append to the output. Don't forget to close the connection at
the end. See ?file
Henrik
On Oct 22, 2014 12:33 AM, "Sven E. Templer" wrote:
> Hi.
>
> You can't.
>
> But using a second file where you first writ
Hello,
Just use ?cat and ?write.table with append = TRUE. Something like the
following.
txt <- "ampl.tab 2 1"
dat <- read.table(text = "
A B
2 3
4 6
2 0
", header = TRUE)
tmp <- "tmp.txt"
cat(txt, "\n", file = tmp) " Don't forget the newline "\n"
write.table(dat, file = tmp, append = T
Hi.
You can't.
But using a second file where you first write your header and then
append the original file is a solution. ?cat and ?write.table with a
focus on the 'append' argument should help. you can then use ?unlink
to delete the original file and ?file.rename to rename the second, if
desired
Hi guys;
I want to write some text at the first line of an output file. The output
file will be used for other software. In particular, the following text
"ampl.tab 2 1" needs to be added to the first line of an df output file.
As a hypothetic example, the output in text file should be like:
a
6 matches
Mail list logo
