After a bit of googling and stalking stackoverflow, I think I may have stumbled onto a bug with the reshape2 package (or data.table, I'm not sure). Specifically, I am unable to melt a particular data.table of mine.
Here's a reproducible example (you can find a copy of that particular .Rdata file here):
library(data.table)
library(ggplot2)
library(reshape2)
load("mpi_cv_vanilla_random_gov_17h55--100_class_widths.Rdata")
melt(par.grid.results)
Before I run melt, my usessionInfo is as follows:
> sessionInfo()
R version 3.0.2 (2013-09-25)
Platform: i686-pc-linux-gnu (32-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8
[4] LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C LC_ADDRESS=C
[10] LC_TELEPHONE=C LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] reshape2_1.2.2 ggplot2_0.9.3.1 data.table_1.8.10
loaded via a namespace (and not attached):
[1] colorspace_1.2-4 dichromat_2.0-0 digest_0.6.4 grid_3.0.2
[5] gtable_0.1.2 labeling_0.2 MASS_7.3-29 munsell_0.4.2
[9] plyr_1.8 proto_0.3-10 RColorBrewer_1.0-5 scales_0.2.3
[13] stringr_0.6.2 tools_3.0.2
And once I run melt(par.grid.results), RStudio throws up the picture of the bomb with dialogue:
"R Session Aborted \nR encountered a fatal error \nThe session was terminated".
If anyone has any ideas as to what's going on, I'd love to hear them.
Thanks!
Edit: Running this inside the terminal, I get the following error (segfault):
> melt(par.grid.results)
Using as id variables
*** caught segfault ***
address 0x18, cause 'memory not mapped'
Traceback:
1: unlist(unname(data[var$measure]))
2: melt.data.frame(par.grid.results)
3: melt(par.grid.results)
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
