I get the error

GDAL Error 4: `C:\DOCUME~1\Temp\Rtmplib5Gm\file5f906952' not recognised as a supported file format.

When a try to write a SpatialGridDataframe as Idrisi A.1 raster format

> x <- readGDAL(system.file("external/test.ag", package="sp")[1])

C:/ARCHIV~1/R/R-29~1.1/library/sp/external/test.ag has GDAL driver AAIGrid
and has 115 rows and 80 columns

> writeGDAL(x,'test.tiff',drivername='GTiff')

That´s OK but..

> writeGDAL(x,'test.rst',drivername='RST')
Error en .local(.Object, ...) :
        GDAL Error 4: `C:\DOCUME~1\ARUIZ~1.EEZ\CONFIG~1\Temp\Rtmplib5Gm\file5f906952' not recognised as a supported file format.

> summary(x)
Object of class SpatialGridDataFrame
Coordinates:
     min    max
x 178400 181600
y 329400 334000
Is projected: NA
proj4string : [NA]
Number of points: 2
Grid attributes:
  cellcentre.offset cellsize cells.dim
x            178420       40        80
y            329420       40       115
Data attributes:
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.    NA's
  128.4   293.2   371.4   423.2   499.8  1806.0  6097.0

> version
               _
platform       i386-pc-mingw32
arch           i386
os             mingw32
system         i386, mingw32
status
major          2
minor          9.1
year           2009
month          06
day            26
svn rev        48839
language       R
version.string R version 2.9.1 (2009-06-26)

Thank for any comment...




-----------------------------------------------
A  l  b  e  r  t  o     R  u  i  z    M  o  r  e  n  o
Dept.   Desertificación   y   Geoecología
Estación  Expermental de  Zonas Áridas
EEZA - CSIC                     Almería - España
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                   www.eeza.csic.es
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