hello
when I followed the steps of ORDINARY KRIGING IN R WITH GRASS6 DATA in
GRASS 6 Tutorial.
I encountered this error:
> mask_SG <-
SpatialGridDataFrame(grd,data=list(k=rep(1,G$cols3*G$rows3)),proj4string=CRS(G$proj4))
Error in validObject(.Object) : invalid class "SpatialGridDataFrame"
object: invalid object for slot "data" in class "SpatialGridDataFrame":
got class "list", should be or extend class "data.frame"
can you tell me why ?
regards
--
Ahmet Temiz
--
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