Dear R-developers,
I have the following problem with R: When I try to scan a big file R
is sometimes killed by the operation system (after spinning the hard
disk for 10 minutes or so) or sometimes my X Window collapses. This
problem occurs only if I have many applications (e.g. Emacs,
gnumeric, two gv, netscape) open at the same
time. On the other hand, if I use read.table() R reads the file without
problems even if many applications also open.
I do not know whether this is a bug or I do something wrong. Please
let me know what is the case.
The details are given below. Please do not hesitate to contact me if
you need more information.
Many thanks,
Zoltan Barta
The details:
> version
_
platform i386-pc-linux-gnu
arch i386
os linux-gnu
system i386, linux-gnu
status
major 1
minor 2.0
year 2000
month 12
day 15
language R > source("../moult/R/O.dat.R")
> F12 <- O.dat("food12")
Read 92669 lines
Killed
The file O.dat.R:
O.dat <- function(nev){
f.nev <- paste(nev,".dat",sep="");
what.l <- list(year=numeric(),week=numeric(),bird=numeric(),
event=character(),moult=character(),action=character(),
res=numeric(),fea1=numeric(),ml1=numeric(),brood=numeric(),
exper=numeric(),loc=numeric(),uval=numeric());
data.frame(scan(f.nev,what=what.l,skip=1));
}
The first ten rows of the file "food12.dat":
year week bird event moult action res fea1 ml1 brood exper loc uval
0 15 0 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
0 15 1 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
0 15 2 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
0 15 3 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
0 15 4 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
0 15 5 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
0 15 6 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
0 15 7 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
0 15 8 SUBST NOMOULT DELAY 5 10 0 0 0 1 0.347214
the file contains lines of similar data and it is generated by a Monte Carlo
simulation.
My system:
Debian GNU/Linux 2.2 (potato)
Kernel 2.2.15
libc6 2.2-4
Memory: 60 MB
Swap 72 MB
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