The following code snippet crashes R (under Windows and Linux) for both R-2.4.1 and R-2.5.0 RC as of yesterday: set.seed(1) H <- rnorm(400000) temp <- rnorm(400000) plot(H, temp, type='s') # (no, it was not my idea to do something like that!) I *guess* it is some overflow in plot.xy() which calls .Internal(plot.xy(xy, type, pch, lty, col, bg, cex, lwd, ...)) but I haven't investigated closely enough, submitting the bug report in case anybody can (and has time to) fix this before tomorrow. Uwe Ligges
plot.xy() with type="s" and huge data (PR#9629)
2 messages · Uwe Ligges, Bill Dunlap
On Mon, 23 Apr 2007 ligges at statistik.uni-dortmund.de wrote:
The following code snippet crashes R (under Windows and Linux) for both R-2.4.1 and R-2.5.0 RC as of yesterday: set.seed(1) H <- rnorm(400000) temp <- rnorm(400000) plot(H, temp, type='s') # (no, it was not my idea to do something like that!) I *guess* it is some overflow in plot.xy() which calls .Internal(plot.xy(xy, type, pch, lty, col, bg, cex, lwd, ...)) but I haven't investigated closely enough, submitting the bug report in case anybody can (and has time to) fix this before tomorrow.
It happens right after 2 calls to alloca(), which probably ought to be changed to non-stack allocations. (On Linux there is a complaint about stack overflow and valgrind complains that someone changed the stack pointer.) type='S' also uses alloca(). ---------------------------------------------------------------------------- Bill Dunlap Insightful Corporation bill at insightful dot com 360-428-8146 "All statements in this message represent the opinions of the author and do not necessarily reflect Insightful Corporation policy or position."