[R] Wriritng to a CSV file

Uwe Ligges ligges at statistik.tu-dortmund.de
Wed Feb 8 20:22:12 CET 2012

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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