add data to a file while doing a loop

Thanks for the reply. Every iteration produces a text data.frame directly into a file without saving it in R. And every iteration overwrites the data produced from the previous iteration. So what I would like to do is being able not to overwrite the data of any iteration but adding it to the same file with maybe the functions paste or rbind.

sessionInfo()

R version 2.13.2 (2011-09-30)
Platform: x86_64-pc-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=Swedish_Sweden.1252  LC_CTYPE=Swedish_Sweden.1252    LC_MONETARY=Swedish_Sweden.1252 LC_NUMERIC=C                    LC_TIME=Swedish_Sweden.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] MatrixEQTL_1.2.0

loaded via a namespace (and not attached):
[1] tools_2.13.2


Best regards,
Jo?o Fadista, Ph.D.
Post Doc

Lund University Diabetes Centre
CRC, Malm? University Hospital
Entrance 72, building 60, level 13
SE-205 02 Malm?, Sweden
Tel: +46 (0)40 391237
e-mail: joao.fadista at med.lu.se


-----Original Message-----
From: stephen sefick [mailto:ssefick at gmail.com] On Behalf Of Stephen Sefick
Sent: den 6 januari 2012 14:14
To: Joao Fadista
Cc: r-help at r-project.org
Subject: Re: [R] add data to a file while doing a loop

Without context, read reproducible code, it is hard to answer this question.  What system are you on?  Do you need to write one line of data or a data frame or a list out?  Are trying to write a graphic out? 
 It will be easier to answer your question with some context.  Good luck!

Stephen

Hi,

I would like to know how can I keep adding data to a file while doing a loop and without deleting the data of the previous iteration. Thanks.

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