The actually process is REALLY complicate, I just gave a simple example 
for the list.

I have a  lot of steps to process the data before I get a final 
"score".  (nested loops, conditional statements, etc.)

Right now, I'm just printing the scores to the screen.  I'd like to 
accumulate them in some kind of data structure so I can either write 
them to disk or graph them.

-N

On 8/26/09 12:27 PM, Erik Iverson wrote:
> How about ?append, but R is vectorized, so why not just
>
> result_list<- 2*item^2 , or for more complicated tasks, the apply/sapply/lapply/mapply family of functions?
>
> In general, the "for" loop construct can be avoided so you don't have to think about messy indexing.  What exactly are you trying to do?
>
> -----Original Message-----
> From: r-help-bounces@r-project.org [mailto:r-help-bounces@r-project.org] On Behalf Of Noah Silverman
> Sent: Wednesday, August 26, 2009 2:20 PM
> To: r help
> Subject: [R] Managing output
>
> Hi,
>
>
> Is there a way to build up a vector, item by item.  In perl, we can
> "push" an item onto an array.  How can we can do this in R?
> I have a loop that generates values as it goes.  I want to end up with a
> vector of all the loop results.
>
> In perl it woud be:
>
> for(item in list){
>       result<- 2*item^2 (Or whatever formula, this is just a pseudo example)
>       Push(@result_list, result)  (This is the step I can't do in R)
> }
>
>
> Thanks!
>
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>    

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