It appears you are facing a garbage collection issue.
?gc
Corey
On Thu, Jun 3, 2010 at 3:13 PM, Andreas Yankopolus <andr...@yank.to> wrote:
> I'm running an Ubuntu 10.04 system and installed R 2.10.1 through the
> package manger. I then installed Rgraphviz 1.24 and graph 1.26 through R.
>
> I'm trying to understand why a complex function my team wrote causes R's
> memory footprint viewed through top to increase every time it's run. I
> traced the increase in memory usage to layoutGraph() and wrote the following
> short function that reproduces the problem:
>
> foo <- function () {
> library(Rgraphviz)
> set.seed(123)
> V <- letters[1:26]
> M <- 1:2
> g1 <- randomGraph(V, M, 0.5)
> edgemode(g1) <- "directed"
> x <- layoutGraph(g1,name="foo",layoutType="twopi", recipEdges="distinct")
> }
>
> I expected that any memory allocated by this function would be freed when
> it returns, but that's not the case. Is there something that I need to be
> doing to to clean up after using layoutGraph?
>
> Thanks,
>
> Andreas
>
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