[R] save an object by dynamicly created name

[David Winsemius]

On Nov 1, 2009, at 10:16 PM, Henrik Bengtsson wrote:

> path <- "data";
> dir.create(path);
>
> for (i in 1:10) {
>  m <- i:5;
>  filename <- sprintf("m%02d.Rbin", i);
>  pathname <- file.path(path, filename);
>  save(m, file=pathname);
> }
>

That would result in each of the ten files containing an object with  
the same  name == "m". (Also on my system R data files have type  
Rdta.) So I thought what was requested might have been a slight mod:

path <- "~/";
dir.create(path);

for (i in 1:10) {
  assign( paste("m", i, sep=""),  i:5)
  filename <- sprintf("m%02d.Rdta", i)
  pathname <- file.path(path, filename)
  obj =get(paste("m", i, sep=""))
  save(obj, file=pathname)
}

-- 
David.

> /H
>
> On Sun, Nov 1, 2009 at 6:53 PM, jeffc <hcen at andrew.cmu.edu> wrote:
>>
>> Hi,
>>
>> I would like to save a few dynamically created objects to disk. The
>> following is the basic flow of the code segment
>>
>> for(i = 1:10) {
>>   m = i:5
>>   save(m, file = ...) ## ???
>> }
>> To distinguish different objects to be saved, I would like to save  
>> m as m1,
>> m2, m3 ..., to file /home/data/m1, /home/data/m2, home/data/m3, ...
>>
>> I tried a couple of methods on translating between object names and  
>> strings
>> (below) but couldn't get it to work.
>> https://stat.ethz.ch/pipermail/r-help/2008-November/178965.html
>> http://tolstoy.newcastle.edu.au/R/help/04/08/2673.html
>>
>> Any suggestions would be appreciated.
>>
>> thanks
>>
>> Hao
>>
>> --
>> View this message in context: http://old.nabble.com/save-an-object-by-dynamicly-created-name-tp26155437p26155437.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
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>> 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
Heritage Laboratories
West Hartford, CT