Dear all,
I am trying to read a - almost for me - small map on R using rgdal package.
This image have dimension of 1701x1401 and are stored on native ArcGis GRID
format. When I see the files sizes, it is less then one megabyte. But
unfortunately when I try read using readGDAL function it return a memory.size()
error. I don´t know why it occours, if it is a small map. Below you can see
GDALinfo(), readGDAL() = with the error, sessionInfo() and memory.size()
outputs.
Any idea?
Kind regards,
miltinho
Brazil
> GDALinfo('al001_frag')
Closing GDAL dataset handle 0x0134d310... destroyed ... done.
rows 1701
columns 1401
bands 1
ll.x 0.5
ll.y 1701.5
res.x 1
res.y 1
oblique.x 0
oblique.y 0
driver AIG
projection NA
file al001_frag
> tst<-readGDAL("al001_frag")
al001_frag has GDAL driver AIG
and has 1701 rows and 1401 columns
Closing GDAL dataset handle 0x020d7c68... destroyed ... done.
Warning messages:
1: Reached total allocation of 479Mb: see help(memory.size)
2: Reached total allocation of 479Mb: see help(memory.size)
*************************************************
> sessionInfo()
R version 2.5.0 (2007-04-23)
i386-pc-mingw32
locale:
LC_COLLATE=English_Jamaica.1252;LC_CTYPE=English_Jamaica.1252;LC_MONETARY=English_Jamaica.1252;LC_NUMERIC=C;LC_TIME=English_Jamaica.1252
attached base packages:
[1] "stats" "graphics" "grDevices" "utils" "datasets" "methods"
[7] "base"
other attached packages:
rgdal sp
"0.5-13" "0.9-14"
> memory.size()
[1] 218914992
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