[R-sig-Geo] memory allocation problem with small PostGIS-layer in readOGR()

Tom Gottfried tom.gottfried at wzw.tum.de
Tue Apr 12 13:32:18 CEST 2011


Dear list,

since some upgrades of R-packages and GDAL (I'm sorry I can not exactly reproduce which) I got 
memory allocation problems reading a relatively small PostGIS layer (type POLYGON with 21 polygons):

 > library(rgdal)
Loading required package: sp
Geospatial Data Abstraction Library extensions to R successfully loaded
Loaded GDAL runtime: GDAL 1.8.0, released 2011/01/12
Path to GDAL shared files:
Loaded PROJ.4 runtime: Rel. 4.7.1, 23 September 2009
Path to PROJ.4 shared files: (autodetected)

 > readOGR("PG:dbname=myDB", "layer(the_geom)")
Error: cannot allocate vector of size 13.9 Gb

 > sessionInfo()
R version 2.12.2 Patched (2011-03-18 r55401)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
  [1] LC_CTYPE=en_US       LC_NUMERIC=C         LC_TIME=en_US
  [4] LC_COLLATE=en_US     LC_MONETARY=C        LC_MESSAGES=en_US
  [7] LC_PAPER=en_US       LC_NAME=C            LC_ADDRESS=C
[10] LC_TELEPHONE=C       LC_MEASUREMENT=en_US LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     methods   base

other attached packages:
[1] rgdal_0.6-33 sp_0.9-79    RODBC_1.3-2

loaded via a namespace (and not attached):
[1] grid_2.12.2     lattice_0.19-17

Any help is appreciated!
Thanks,
Tom

-- 
Technische Universität München
Department für Pflanzenwissenschaften
Lehrstuhl für Grünlandlehre
Alte Akademie 12
85350 Freising / Germany
Phone: ++49 (0)8161 715324
Fax:   ++49 (0)8161 713243
email: tom.gottfried at wzw.tum.de
http://www.wzw.tum.de/gruenland



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