On Fri, 19 Sep 2008, milton ruser wrote:
Dear all,
I tryed both suggestions and they worked fine.
In fact, the short solution is
require(rgdal)
require(maptools)
mes01jan<-readGDAL("jan_00")
write.asciigrid(mes01jan,"mes01jan.asc")
One final note: write.asciigrid() in sp has arguments:
args
Dear all,
I tryed both suggestions and they worked fine.
In fact, the short solution is
require(rgdal)
require(maptools)
mes01jan<-readGDAL("jan_00")
write.asciigrid(mes01jan,"mes01jan.asc")
Thanks Mike! Thanks Alex!
best wishes,
miltinho astronauta
brazil
On Fri, Sep 19, 2008 at 10:46 PM, Mic
Hi,
an alternative to using GDAL for writing ASCII grids is the
write.ascii.grid function in the RSAGA package. (RSAGA is an interface
to SAGA GIS, but this function actually doesn't require SAGA to be
installed on your computer.)
write.ascii.grid(data, file, header = NULL, write.header = TR
Of course, you can use write.asciigrid() in package sp for a more
immediate workaround (sorry for not thinking of this previously!):
e.g.
x <- readGDAL(system.file("external/test.ag", package="sp")[1])
## be aware that only the first raster column will be written by attr = 1
write.asciigrid(x
I tried this, and AAIGrid is not available for creation by rgdal on my
machine. See gdalDrivers() for those available.
If you install FWTools you can use a workaround to convert the export
externally, e.g.
x <- readGDAL(system.file("external/test.ag", package="sp")[1])
## write to GeoTIFF
wr
At a guess the Byte type might be causing problems, please provide (at a
minimum) the actual error text you see, and (preferably) exact steps to
reproduce the problem - is it specific to your dataset or does it fail
with other datasets? Is there any difference if you change the output
type or drive
Dear all,
I am reading a set of maps from ArcGRID format using rgdal and I need to
export to ASC format.
But when I try the commands below, I get an error.
require(rgdal)
mes01jan<-readGDAL("jan_00")
image(mes01jan, col=topo.colors(50)) #looks find
writeGDAL(mes01jan, "mes01jan.asc", drivername
