[R] Problem with nested functions - functions nested too deeply in source code
maximilian.kofler at umit.at
Fri May 7 14:21:47 CEST 2010
Duncan Murdoch <murdoch.duncan <at> gmail.com> writes:
> I doubt if that was the error message. More likely you saw
> Error: evaluation nested too deeply: infinite recursion /
Exactly this was the error message I recieved
>This isn't a case of the source being nested to deeply, but rather of the
>evaluation being nested too deeply.
> This happens in recursive algorithms when R runs out of
> stack space, around 5000 calls deep. Is it likely in your dataset that
> a recursion depth of 5000 is reasonable? In most cases this indicates a
> programming error that leads to an infinite recursion, but there are
> probably cases where a depth like that is reasonable.
I don't think that it is a programming error, because I succeyyfully
calculated subgraph isomirphism with the algorithm, but with
smaller input graphs. So the algorithm seems to work.
I already tried to set options(expressions=500000), but
then I cause a protection stack overflow:
error: protect(): protection stack overflow
Is the problem that too many objects are stored in the stack?
If yes, somebody knows how to solve this
thanks for your replies
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