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 = "AAIGrid", type="Byte")

Any idea?

miltinho, brazil

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