[R] object names from character strings

[David Winsemius]

On Dec 26, 2010, at 4:04 AM, Jim Bouldin wrote:

> I realize this is probably pretty basic but I can't figure it out.
>
> I'm looping through an array, doing various calculations and  
> producing a resulting data frame in each loop iteration.  I need to  
> give each data frame a different name.  Although I can easily create  
> a new character string for writing each frame to an output file, I  
> cannot figure out how to convert such strings to corresponding  
> object names within the R workspace itself, so as to give each d.f.  
> a distinct name.  The closest I got were various attempts with the  
> as.name function, but couldn't get that to work either.  Any help  
> appreciated.  Thanks.

Here's the first example in the help(assign) page:

or(i in 1:6) { #-- Create objects 'r.1', 'r.2', ... 'r.6'
            nam <- paste("r",i, sep=".")
           assign(nam, 1:i) }
ls(pattern = "^r..$")


>
> -- 
> Jim Bouldin, PhD
> Research Ecologist
>
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David Winsemius, MD
West Hartford, CT