[R] add data to a file while doing a loop

[David Winsemius]

On Jan 6, 2012, at 8:27 AM, Joao Fadista wrote:

> 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.

If you are using write.table, then pay more attention to the append  
parameter documented in the help file.
-- 
David.
>
>
>> 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,
> João Fadista, Ph.D.
> Post Doc
>
> Lund University Diabetes Centre
> CRC, Malmö University Hospital
> Entrance 72, building 60, level 13
> SE-205 02 Malmö, 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
>
> On Fri 06 Jan 2012 05:49:01 AM CST, Joao Fadista wrote:
>> 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.
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

David Winsemius, MD
West Hartford, CT