R help - Feb 2012 - Wriritng to a CSV file

Dear all, let say I want to write a vector to a CSV file. So I can have
following syntax:
?
write.csv(rnorm(10), "dat.csv")
?
Now I want to add one more column into that existing file. If I use the same
code then existing file will be destroyed. Is there any functionality to add
without destroying the existing file? I have tries with 'append = TRUE'
however it is not working!
?
Any suggestion will be highly appreciated.

On 08.02.2012 20:14, Ron Michael wrote:
> Dear all, let say I want to write a vector to a CSV file. So I can have
following syntax:
>
> write.csv(rnorm(10), "dat.csv")
>
> Now I want to add one more column into that existing file. If I use the
same code then existing file will be destroyed. Is there any functionality to
add without destroying the existing file? I have tries with 'append =
TRUE' however it is not working!
>
> Any suggestion will be highly appreciated.
Since these text files are written line by line, you cannot add a column 
afterwards, you can just append rows.

Hence read the first column and write a two column data.frame afterwards.

Uwe Ligges

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