It turns out that that 'x' comes from the spData package and lives inside that package (part of its namespace).
> spData::x [1] 0 30 60 90 120 150 180 210 240 270 300 330 360 390 420 450 This is conceptually no different from other objects in package namespace, although we are more used to seeing functions and not data object. Another well-known example of this is: > base::pi [1] 3.141593 So, this 'x' is *not* in your global workspace and you cannot remove it without unloading the package. /Henrik On Mon, Jul 23, 2018 at 12:30 PM Jeremie Juste <jeremieju...@gmail.com> wrote: > > > > Hello, > > > I found a dangerous issue in the library spdep. I get variables x and y > that cannot be removed by rm() and I don't don't how they show up. Can > anyone reproduce this? > > ~$ R --vanilla > > rm(list=ls()) > > library(spdep) > > x > [1] 0 30 60 90 120 150 180 210 240 270 300 330 360 390 420 450 > > rm(list=ls()) > > x > [1] 0 30 60 90 120 150 180 210 240 270 300 330 360 390 420 450 > > > > > Sys.info() > > sysname "Linux" > release "4.9.0-6-amd64" > version "#1 SMP Debian 4.9.88-1+deb9u1 (2018-05-07)" > nodename "freegnu" > machine "x86_64" > > > > Session > > > > sessionInfo() > > R version 3.4.1 (2017-06-30) > Platform: x86_64-pc-linux-gnu (64-bit) > Running under: Debian GNU/Linux 9 (stretch) > > Matrix products: default > BLAS: /usr/local/lib/R/lib/libRblas.so > LAPACK: /usr/local/lib/R/lib/libRlapack.so > > locale: > [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C > [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 > [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 > [7] LC_PAPER=en_US.UTF-8 LC_NAME=C > [9] LC_ADDRESS=C LC_TELEPHONE=C > [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > loaded via a namespace (and not attached): > [1] compiler_3.4.1 > > ______________________________________________ > 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. ______________________________________________ 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.