From lpagie at xs4all.nl  Tue Nov 10 21:30:16 2009
From: lpagie at xs4all.nl (lpagie at xs4all.nl)
Date: Tue, 10 Nov 2009 21:30:16 +0100 (CET)
Subject: [Rd] polygon kills X-server (PR#14055)
Message-ID: <20091110203016.5C2272831FE1@mail.pubhealth.ku.dk>

Full_Name: Ludo Pagie
Version: 2.10.0
OS: linux, ubuntu, 8.04
Submission from: (NULL) (83.163.218.221)


when I make a polygon with 100,000 vertices my X-server is being
killed. This occurs in R-2.9.0 and a freshly installed R-2.10.0
I'm running Ubuntu with a locally compiled R:

uname -a
Linux onyx 2.6.24-24-generic #1 SMP Tue Aug 18 16:22:17 UTC 2009
x86_64 GNU/Linux

xlower = -2e6:2e6
xupper = rev(xlower)
ylower = runif(length(xlower))
yupper = ylower+.1
plot(NA,xlim=range(xlower),ylim=range(ylower))
idx=1:10000
# it draws fine for lower number of vertices:
polygon(x=c(xlower[idx],xupper[idx]),y=c(ylower[idx],yupper[idx]),col='grey')
# but X is killed when I draw 100000 vertices or more
idx=1:100000
# I've commented the next call to prevent people accidently
# killing their X?
#polygon(x=c(xlower[idx],xupper[idx]),y=c(ylower[idx],yupper[idx]),col='grey')


> sessionInfo()
R version 2.10.0 (2009-10-26)
x86_64-unknown-linux-gnu

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=C              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


I've posted above to the R-help list and got replies from Uwe Ligges saying it
also killed his Windows completely.



[Rd] polygon kills X-server (PR#14055)
lpagie at xs4all.nl