It does appear to be an error message from R [1] 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. [1] https://stackoverflow.com/questions/24335692/large-matrices-in-r-long-vectors-not-supported-yet -- Sent from my phone. Please excuse my brevity. On February 15, 2018 4:33:13 AM PST, Loris Bennett <loris.benn...@fu-berlin.de> wrote: >Hi Jeff, > >Jeff Newmiller <jdnew...@dcn.davis.ca.us> writes: > >>> Hi, >>> >>> 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 = >weight) >>> : >>> long vectors not supported yet: >../../src/include/Rinlinedfuns.h:138 >>> >>> when passing a 13 GB TransitionLayer object to shortestPath from the >>> package 'gdistance'. >>> >>> The error, albeit in a different context, is discussed here: >>> >>> https://github.com/tidyverse/readr/issues/309 >>> https://github.com/tidyverse/readr/pull/433 >>> >>> However it is not clear to me quite what the fix was and what kind >of >>> 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 > > https://github.com/igraph/rigraph/issues/255 > >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. > >Cheers, > >Loris ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
