R help - May 2010 - Creating data frames in a loop

Hello,

I am new to R and have a question on creating data frames at run time in a
loop. How can I create it? For example, something like the following which
will create 20 dataframes.

for(i in 1:20) {
 ddat_<current value of i> <- data
 other processing...
}
 
Thanks.
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On May 11, 2010, at 11:01 PM, Nish wrote:
>
> Hello,
>
> I am new to R and have a question on creating data frames at run  
> time in a
> loop. How can I create it? For example, something like the following  
> which
> will create 20 dataframes.
Well not unless you
>
> for(i in 1:20) {
> ddat_<current value of i> <- data
> other processing...
> }
>
ddat <- as.list(rep("", 20))
for(i in 1:20) {
         ddat[[i]] <- data.frame(ivec = 1:i)
         #other processing..
                 }

-- 
David.
> Thanks.
> -- 
> View this message in context:
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>
> ______________________________________________
> 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

Well you can try 
for(i in 1:20) {
  assign(paste("ddat",i,sep="_"),data)
other processing...
}


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Thank yoy. this works.
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