[R] creating list with 200 identical objects

[Chuck Cleland]

On 6/1/2009 6:08 AM, Rainer M Krug wrote:
> Hi
> 
> I am doing an simulation, and I a large proportion of the simulation
> time is taken up by memory allocations.
> 
> I am creating an object, and storing it in a list of those objects.
> 
> essentially:
> 
> x <- list()
> for (t in 1:500) {
>  x[1] <- new("track")
> }
> 
> I would like to initialize in one go, to avoid the continuous
> reallocation of memory when a new "track" is added, and fill it wit
> the object created by new("track").
> 
> How can I do this?

  Does this help?

x <- vector("list", 500)
for(i in 1:500){x[[i]] <- runif(30)}

> thanks
> 
> Rainer 

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Chuck Cleland, Ph.D.
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