Dear users,
I got this problem and i don't have a clue of what it could be happening...

The context: i'm running a loop in which i extract information from a raster
map (I work with GRASS and R, using spgrass6 package), and rearrange it to
create a matrix. I've tried it with small maps and it works smoothly, but in
large maps I have to resort to saving data in the hard disk regularly in
order to avoid the "cannot allocate vector of size..." problem (builted in
the loop itself).

Even so, the message "address (nil), cause 'memory not mapped'" appeared,
and i really don't have a clue of what it means.

I run R 2.7.0 on openSUSE 10.2

If anyone can be of any help, it'll be greatly appreciated... below I'm
writing the output i got (and the R.Version() output...)

thank you,

Juan

<grass output>
Null cells excluded from cost evaluation.
Source map is: Floating point (double) cell type
189 rows, 178 cols
Creating some temporary files
Reading riosypondas3000
 100%
Initializing output
 100%
Finding cost path
Writing nombre
Double cell type.
Writing...
 100%
Peak cost value: 13.614127
Creating BIL support files...
Header File =
/home/mastermind/GRASSDATA//yacare1/jmb/.tmp/SpongeBob/nombre.hdr
World File =
/home/mastermind/GRASSDATA//yacare1/jmb/.tmp/SpongeBob/nombre.wld
Exporting raster as double values (bytes=8)
Using the current region settings...
north=6681799.617727
south=6115500.667945
east=756812.903880
west=223200.856418
r=189
c=178
 100%
<end of grass output>

 *** caught segfault ***
address (nil), cause 'memory not mapped'

Traceback:
 1: system("g.proj -j -f", intern = TRUE, ignore.stderr = ignore.stderr)
 2: ifelse(.Platform$OS.type == "windows", projstr <- system("g.proj -j
-f",     intern = TRUE), projstr <- system("g.proj -j -f", intern =
TRUE,     ignore.stderr = ignore.stderr))
 3: getLocationProj()
 4: nchar(projargs)
 5: CRS(getLocationProj())
 6: readRAST6("nombre")
 7: dist.grass(matrizPaisaje.riosypondas3000, "riosypondas3000",     direct
= "/home/mastermind/r/distancias", division = 17)
 8: eval(expr, envir, enclos)
 9: eval(parse(text = sprintf("dist.%s <<- dist.grass(matrizPaisaje.%s,
'%s', direct='%s', division=%s)",     i, i, i, direct, division)))
10: dist.grass.loop(c("riosypondas3000", "maxent3000", "alturas3000.2"),
direct = "/home/mastermind/r/distancias", division = 17)
11: eval(expr, envir, enclos)
12: eval(expr, envir = loc.frame)
13: system.time(dist.grass.loop(c("riosypondas3000", "maxent3000",
"alturas3000.2"), direct = "/home/mastermind/r/distancias",     division =
17))

Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace

> R.Version()
$platform
[1] "i686-pc-linux-gnu"

$arch
[1] "i686"

$os
[1] "linux-gnu"

$system
[1] "i686, linux-gnu"

$status
[1] ""

$major
[1] "2"

$minor
[1] "7.0"

$year
[1] "2008"

$month
[1] "04"

$day
[1] "22"

$`svn rev`
[1] "45424"

$language
[1] "R"

$version.string
[1] "R version 2.7.0 (2008-04-22)"

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