I just figured out what is happening. The root drive (presumably OSX
virtual memory) becomes depleted. The error message about "memory not
mapped" was a hint, too. So, not really R's fault. However, I wonder
whether R can be made to abort more gracefully, or at least trap the
error message and translate it into something more meaningful ("you
have run out of [virtual] memory when executing 'R statement' "). of
course, this may not be possible at all.
/iaw
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