[R] long vectors not supported yet
jdnewmil at dcn.davis.ca.us
Thu Feb 15 16:46:03 CET 2018
It does appear to be an error message from R  regarding the difference between the maximum length of a data vector (~2^59) and the maximum length of a matrix/array/data frame dimension (~2^31).
As to whether this is under consideration for change, I don't know but I would not want such information to affect how I work around the limitation today because it may come with bugs initially anyway.
Sent from my phone. Please excuse my brevity.
On February 15, 2018 4:33:13 AM PST, Loris Bennett <loris.bennett at fu-berlin.de> wrote:
>Jeff Newmiller <jdnewmil at dcn.davis.ca.us> writes:
>>> I am running R 3.3.3 and getting the following error:
>>> Error in add_edges(res, edges = t(as.matrix(el[, 1:2])), attr =
>>> long vectors not supported yet:
>>> when passing a 13 GB TransitionLayer object to shortestPath from the
>>> package 'gdistance'.
>>> The error, albeit in a different context, is discussed here:
>>> However it is not clear to me quite what the fix was and what kind
>>> limit may still exist in subsequent R versions.
>>> Is this a general problem/issue with R, or is this something more
>>> package-specific which should be addressed on R-sig-Geo?
>> This looks to me like a package development issue... which may be
>> under discussion in R-sig-geo (search the archives), but more likely
>> to be appropriate to discuss with the maintainer by email or through
>> their development repository (R-forge, though it looks unused).
>Thanks for the information. I reported the issue to the developers of
>'igraph', which is where 'add_edges' comes from, here
>The response there to the question of whether it is an R core or an
>igraph issue was
> R core for sure, but probably both.
>Is this indeed the case for R core? To my naive eye, the error message
>suggests more of a known limitation, rather than a bona fide bug.
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